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AMC1300BQDWVRQ1

AMC1300BQDWVRQ1

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    SOIC-8_5.85X7.5MM

  • 描述:

    AMC1300BQDWVRQ1

  • 数据手册
  • 价格&库存
AMC1300BQDWVRQ1 数据手册
AMC1300B-Q1 SBASA40B – APRIL 2020 – REVISED JUNE 2022 AMC1300B-Q1 Automotive, Precision, ±250-mV Input, Reinforced Isolated Amplifier 1 Features 3 Description • The AMC1300B-Q1 is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 5 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, and supports a working voltage of up to 1.5 kVRMS. • • • • • • • • • AEC-Q100 qualified for automotive applications: – Temperature grade 1: –40°C to 125°C, TA Functional Safety-Capable – Documentation available to aid functional safety system design ±250-mV input voltage range optimized for current measurements using shunt resistors Fixed gain: 8.2 V/V Low DC errors: – Offset error: ±0.2 mV (max) – Offset drift: ±0.9 μV/°C (max) – Gain error: ±0.3% (max) – Gain drift: ±30 ppm/°C (max) – Nonlinearity: 0.03% (max) 3.3-V or 5-V operation on high-side and low-side Fail-safe output High CMTI: 100 kV/µs (min) Low EMI, meets CISPR-11 and CISPR-25 standards Safety-related certifications: – 7071-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) – 5000-VRMS isolation for 1 minute per UL1577 2 Applications • The input of the AMC1300B-Q1 is optimized for direct connection to a low-impedance shunt resistor or other low-impedance voltage source with low signal levels. The excellent DC accuracy and low temperature drift supports accurate current control in PFC stages, DC/DC converters, traction inverters, and OBCs over the full automotive temperature range from –40°C to +125°C. The integrated missing-shunt and missing high-side supply detection features simplify system-level design and diagnostics. Device Information(1) Shunt-resistor-based current sensing in: – HEV/EV charging piles – HEV/EV onboard chargers (OBC) – HEV/EV DC/DC converters – HEV/EV traction inverters PART NUMBER AMC1300B-Q1 (1) High-side supply (3.3 V or 5 V) VDD1 The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from hazardous voltages and damage. PACKAGE SOIC (8) BODY SIZE (NOM) 5.85 mm × 7.50 mm For all available packages, see the orderable addendum at the end of the data sheet. Low-side supply (3.3 V or 5 V) AMC1300B-Q1 VDD2 RSHUNT INP +250 mV 0V ± 250 mV INN GND1 Reinforced Isolation I OUTP VCMout ±2.05 V ADC OUTN GND2 Typical Application An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 Table of Contents 1 Features............................................................................1 2 Applications..................................................................... 1 3 Description.......................................................................1 4 Revision History.............................................................. 2 5 Pin Configuration and Functions...................................3 6 Specifications.................................................................. 4 6.1 Absolute Maximum Ratings........................................ 4 6.2 ESD Ratings............................................................... 4 6.3 Recommended Operating Conditions.........................4 6.4 Thermal Information....................................................5 6.5 Power Ratings.............................................................5 6.6 Insulation Specifications ............................................ 6 6.7 Safety-Related Certifications ..................................... 7 6.8 Safety Limiting Values.................................................7 6.9 Electrical Characteristics.............................................8 6.10 Switching Characteristics..........................................9 6.11 Timing Diagram......................................................... 9 6.12 Insulation Characteristics Curves........................... 10 6.13 Typical Characteristics............................................ 11 7 Detailed Description......................................................18 7.1 Overview................................................................... 18 7.2 Functional Block Diagram......................................... 18 7.3 Feature Description...................................................18 7.4 Device Functional Modes..........................................20 8 Application and Implementation.................................. 21 8.1 Application Information............................................. 21 8.2 Typical Application.................................................... 21 8.3 What to Do and What Not to Do............................... 24 9 Power Supply Recommendations................................24 10 Layout...........................................................................25 10.1 Layout Guidelines................................................... 25 10.2 Layout Example...................................................... 25 11 Device and Documentation Support..........................26 11.1 Documentation Support.......................................... 26 11.2 Receiving Notification of Documentation Updates.. 26 11.3 Support Resources................................................. 26 11.4 Trademarks............................................................. 26 11.5 Electrostatic Discharge Caution.............................. 26 11.6 Glossary.................................................................. 26 12 Mechanical, Packaging, and Orderable Information.................................................................... 26 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (January 2021) to Revision B (June 2022) Page • Changed isolation standard from DIN VDE V 0884-11 (VDE V 0884-11) to DIN EN IEC 60747-17 (VDE 0884-17) and updated the Insulation Specifications and Safety-Related Certifications tables accordingly....... 1 • Added Functional Safety-Capable bullets to Features list.................................................................................. 1 • Changed external clearance (CLR) from ≥9 mm to ≥8.5 mm............................................................................. 6 • Changed CIO from ~1 pF to ~1.5 pF................................................................................................................... 6 Changes from Revision * (April 2020) to Revision A (January 2021) Page • Changed external clearance (CLR) from ≥8.5 mm to ≥9 mm............................................................................. 6 • Changed TCVOS from ±3 µV/°C to ±0.9 µV/°C................................................................................................... 8 • Changed TCEG from ±50 ppm/°C to ±30 ppm/°C...............................................................................................8 • Changed VDD1UV from 1.75 V (min) / 2.53 V (typ) / 2.7 V (max) to 2.4 V (min) / 2.6 V (typ) / 2.8 V (max)....... 8 2 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 5 Pin Configuration and Functions VDD1 1 8 VDD2 INP 2 7 OUTP INN 3 6 OUTN GND1 4 5 GND2 Not to scale Figure 5-1. DWV Package, 8-Pin SOIC (Top View) Table 5-1. Pin Functions PIN NO. NAME TYPE DESCRIPTION High-side power supply.(1) 1 VDD1 High-side power 2 INP Analog input Noninverting analog input. Either INP or INN must have a DC current path to GND1 to define the common-mode input voltage.(2) 3 INN Analog input Inverting analog input. Either INP or INN must have a DC current path to GND1 to define the common-mode input voltage.(2) 4 GND1 High-side ground High-side analog ground. 5 GND2 Low-side ground Low-side analog ground. 6 OUTN Analog output Inverting analog output. 7 OUTP Analog output Noninverting analog output. 8 VDD2 Low-side power (1) (2) Low-side power supply.(1) See the Power Supply Recommendations section for power-supply decoupling recommendations. See the Layout section for details. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 3 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6 Specifications 6.1 Absolute Maximum Ratings see(1) Power-supply voltage MIN MAX High-side VDD1 to GND1 –0.3 6.5 Low-side VDD2 to GND2 –0.3 6.5 GND1 – 6 VDD1 + 0.5 V GND2 – 0.5 VDD2 + 0.5 V Analog input voltage INP, INN Output voltage OUTP, OUTN Input current Continuous, any pin except power-supply pins Temperature (1) –10 10 Junction, TJ 150 Storage, Tstg –65 150 UNIT V mA °C Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions. If used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime 6.2 ESD Ratings VALUE V(ESD) (1) Electrostatic discharge Human-body model (HBM), per AEC Q100-002(1), HBM ESD classification Level 2 ±2000 Charged-device model (CDM), per AEC Q100-011, CDM ESD classification Level C6 ±1000 UNIT V AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification. 6.3 Recommended Operating Conditions over operating ambient temperature range (unless otherwise noted) MIN NOM MAX UNIT POWER SUPPLY High-side power supply VDD1 to GND1 3 5 5.5 V Low-side power supply VDD2 to GND2 3 3.3 5.5 V ANALOG INPUT VClipping Differential input voltage before clipping output VIN = VINP – VINN ±320 mV VFSR Specified linear differential full-scale voltage VIN = VINP – VINN –250 250 VCM Operating common-mode input voltage (VINP + VINN) / 2 to GND1 –0.16 VDD1 – 2.1 V –40 125 °C mV TEMPERATURE RANGE TA 4 Specified ambient temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.4 Thermal Information AMC1300B-Q1 THERMAL METRIC(1) DWV (SOIC) UNIT 8 PINS RθJA Junction-to-ambient thermal resistance 85.4 °C/W RθJC(top) Junction-to-case (top) thermal resistance 26.8 °C/W RθJB Junction-to-board thermal resistance 43.5 °C/W ψJT Junction-to-top characterization parameter 4.8 °C/W ψJB Junction-to-board characterization parameter 41.2 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance n/a °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 6.5 Power Ratings PARAMETER PD Maximum power dissipation (both sides) PD1 Maximum power dissipation (high-side) PD2 Maximum power dissipation (low-side) VALUE UNIT VDD1 = VDD2 = 5.5 V TEST CONDITIONS 99 mW VDD1 = 3.6 V 31 VDD1 = 5.5 V 54 VDD2 = 3.6 V 26 VDD2 = 5.5 V 45 mW mW Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 5 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.6 Insulation Specifications over operating ambient temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VALUE UNIT GENERAL CLR External clearance(1) Shortest pin-to-pin distance through air ≥ 8.5 mm CPG External creepage(1) Shortest pin-to-pin distance across the package surface ≥ 8.5 mm DTI Distance through insulation Minimum internal gap (internal clearance) of the double insulation ≥ 0.021 mm CTI Comparative tracking index DIN EN 60112 (VDE 0303-11); IEC 60112 ≥ 600 V Material group According to IEC 60664-1 Overvoltage category per IEC 60664-1 Rated mains voltage ≤ 600 VRMS I-IV Rated mains voltage ≤ 1000 VRMS I-III DIN EN IEC 60747-17 (VDE I 0884-17)(2) VIORM Maximum repetitive peak isolation voltage VIOWM At AC voltage 2120 VPK Maximum-rated isolation working voltage At AC voltage (sine wave) 1500 VRMS At DC voltage 2120 VDC VIOTM Maximum transient isolation voltage VTEST = VIOTM, t = 60 s (qualification test) 7000 VTEST = 1.2 × VIOTM, t = 1 s (100% production test) 8400 VIMP Maximum impulse voltage(3) Tested in air, 1.2/50-µs waveform per IEC 62368-1 9800 VPK VIOSM Maximum surge isolation voltage(4) Tested in oil (qualification test), 1.2/50-µs waveform per IEC 62368-1 12800 VPK Apparent charge(5) qpd CIO Barrier capacitance, input to output(6) RIO Insulation resistance, input to output(6) Method a, after input/output safety test subgroups 2 and 3, Vini = VIOTM, tini = 60 s, Vpd(m) = 1.2 × VIORM, tm = 10 s ≤5 Method a, after environmental tests subgroup 1, Vini = VIOTM, tini = 60 s, Vpd(m) = 1.6 × VIORM, tm = 10 s ≤5 Method b1, at routine test (100% production) and preconditioning (type test), Vini = VIOTM, tini = 1 s, Vpd(m) = 1.875 × VIORM, tm = 1 s ≤5 VIO = 0.5 VPP at 1 MHz ~1.5 VIO = 500 V at TA = 25°C > 1012 VIO = 500 V at 100°C ≤ TA ≤ 125°C > 1011 VIO = 500 V at TS = 150°C > 109 Pollution degree 2 Climatic category 55/125/21 VPK pC pF Ω UL1577 VISO (1) (2) (3) (4) (5) (6) 6 Withstand isolation voltage VTEST = VISO = 5000 VRMS, t = 60 s (qualification), VTEST = 1.2 × VISO = 6000 VRMS, t = 1 s (100% production test) 5000 VRMS Apply creepage and clearance requirements according to the specific equipment isolation standards of an application. Care must be taken to maintain the creepage and clearance distance of a board design to ensure that the mounting pads of the isolator on the printed circuit board (PCB) do not reduce this distance. Creepage and clearance on a PCB become equal in certain cases. Techniques such as inserting grooves, ribs, or both on a PCB are used to help increase these specifications. This coupler is suitable for safe electrical insulation only within the safety ratings. Compliance with the safety ratings shall be ensured by means of suitable protective circuits. Testing is carried out in air to determine the surge immunity of the package. Testing is carried in oil to determine the intrinsic surge immunity of the isolation barrier. Apparent charge is electrical discharge caused by a partial discharge (pd). All pins on each side of the barrier are tied together, creating a two-pin device. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.7 Safety-Related Certifications VDE UL DIN EN IEC 60747-17 (VDE 0884-17), EN IEC 60747-17, DIN EN IEC 62368-1 (VDE 0868-1), EN IEC 62368-1, IEC 62368-1 Clause : 5.4.3 ; 5.4.4.4 ; 5.4.9 Recognized under 1577 component recognition Reinforced insulation Single protection Certificate number: 40040142 File number: E181974 6.8 Safety Limiting Values Safety limiting(1) intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry. A failure of the I/O can allow low resistance to ground or the supply and, without current limiting, dissipate sufficient power to over-heat the die and damage the isolation barrier potentially leading to secondary system failures. PARAMETER TEST CONDITIONS IS Safety input, output, or supply current RθJA = 85.4°C/W, VDDx = 5.5 V, TJ = 150°C, TA = 25°C IS Safety input, output, or supply current RθJA = 85.4°C/W, VDDx = 3.6 V, TJ = 150°C, TA = 25°C PS Safety input, output, or total power RθJA = 85.4°C/W, TJ = 150°C, TA = 25°C TS Maximum safety temperature (1) MIN TYP MAX UNIT 266 mA 407 mA 1464 mW 150 °C The maximum safety temperature, TS, has the same value as the maximum junction temperature, TJ, specified for the device. The IS and PS parameters represent the safety current and safety power, respectively. Do not exceed the maximum limits of IS and PS. These limits vary with the ambient temperature, TA. The junction-to-air thermal resistance, RθJA, in the Thermal Information table is that of a device installed on a high-K test board for leaded surface-mount packages. Use these equations to calculate the value for each parameter: TJ = TA + RθJA × P, where P is the power dissipated in the device. TJ(max) = TS = TA + RθJA × PS, where TJ(max) is the maximum junction temperature. PS = IS × VDDmax, where VDDmax is the maximum supply voltage for high-side and low-side. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 7 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.9 Electrical Characteristics minimum and maximum specifications apply from TA = –40°C to +125°C, VDD1 = 3.0 V to 5.5 V, VDD2 = 3.0 V to 5.5 V, INP = –250 mV to +250 mV, and INN = GND1; typical specifications are at TA = 25°C, VDD1 = 5 V, and VDD2 = 3.3 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUT VCMov Common-mode overvoltage detection level (VINP + VINN) / 2 to GND1 VDD1 – 2 Hysteresis of common-mode overvoltage detection level Input offset voltage(1) VOS TCVOS Input offset V 60 Initial, at TA = 25°C, INP = INN = GND1 drift(1) (4) –0.2 –0.9 fIN = 0 Hz, VCM min ≤ VCM ≤ VCM max CMRR Common-mode rejection ratio RIN Single-ended input resistance RIND Differential input resistance IIB Input bias current INP = INN = GND1; IIB = (IIBP + IIBN) / 2 IIO Input offset current IIO = IIBP – IIBN; INP = INN = GND1 CIN Single-ended input capacitance CIND Differential input capacitance mV ±0.01 0.2 mV ±0.1 0.9 µV/°C –100 fIN = 10 kHz, VCM min ≤ VCM ≤ VCM max dB –98 INN = GND1 –41 19 kΩ 22 kΩ –30 –24 µA ±5 nA INN = GND1, fIN = 275 kHz 2 pF fIN = 275 kHz 1 pF 8.2 V/V ANALOG OUTPUT Nominal gain error(1) EG Gain TCEG Gain drift(1) (5) at TA = 25°C Nonlinearity(1) THD SNR –0.3% ±0.04% –30 ±5 –0.03% ±0.01% –85 dB Output noise INP = INN = GND1, fIN = 0 Hz, BW = 100 kHz brickwall filter 230 µVRMS fIN = 1 kHz, BW = 10 kHz 81.5 fIN = 10 kHz, BW = 100 kHz Power-supply rejection ratio(2) –96 PSRR vs VDD2, at DC Common-mode output voltage VCLIPout Clipping differential output voltage VFailsafe Failsafe differential output voltage BW Output bandwidth ROUT Output resistance On OUTP or OUTN Output short-circuit current On OUTP or OUTN, sourcing or sinking, INN = INP = GND1, outputs shorted to either GND2 or VDD2 Common-mode transient immunity |GND1 – GND2| = 1 kV dB –103 PSRR vs VDD1, 100-mV and 10-kHz ripple VCMout 85 72 dB –106 PSRR vs VDD2, 100-mV and 10-kHz ripple 8 0.03% fIN = 10 kHz PSRR vs VDD1, at DC CMTI 30 ppm/°C Total harmonic distortion(3) Signal-to-noise ratio PSRR 0.3% –86 1.39 1.44 1.49 V VOUT = (VOUTP – VOUTN); |VIN| = |VINP – VINN| > |VClipping| –2.52 ±2.49 2.52 V VCM ≥ VCMov, or VDD1 missing –2.63 –2.57 –2.53 250 310 kHz < 0.2 Ω Submit Document Feedback 100 V 14 mA 150 kV/µs Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.9 Electrical Characteristics (continued) minimum and maximum specifications apply from TA = –40°C to +125°C, VDD1 = 3.0 V to 5.5 V, VDD2 = 3.0 V to 5.5 V, INP = –250 mV to +250 mV, and INN = GND1; typical specifications are at TA = 25°C, VDD1 = 5 V, and VDD2 = 3.3 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 2.4 2.6 2.8 3.0 V ≤ VDD1 ≤ 3.6 V 6.3 8.5 4.5 V ≤ VDD1 ≤ 5.5 V 7.2 9.8 3.0 V ≤ VDD2 ≤ 3.6 V 5.3 7.2 4.5 V ≤ VDD2 ≤ 5.5 V 5.9 8.1 UNIT POWER SUPPLY VDD1UV VDD1 undervoltage detection threshold voltage IDD1 High-side supply current IDD2 Low-side supply current (1) (2) (3) (4) (5) VDD1 falling V mA mA The typical value includes one standard deviation (sigma) at nominal operating conditions. This parameter is input referred. THD is the ratio of the rms sum of the amplitues of first five higher harmonics to the amplitude of the fundamental. Offset error temperature drift is calculated using the box method, as described by the following equation: TCVOS = (VOS,MAX - VOS,MIN) / TempRange where VOS,MAX and VOS,MIN refer to the maximum and minimum VOS values measured within the temperature range (–40 to 125℃). Gain error temperature drift is calculated using the box method, as described by the following equation: TCEG (ppm) = ((EG,MAX - EG,MIN) / TempRange) x 104 where EG,MAX and EG,MIN refer to the maximum and minimum EG values (in %) measured within the temperature range (–40 to 125℃). 6.10 Switching Characteristics over operating ambient temperature range (unless otherwise noted) PARAMETER tr Output signal rise time tf Output signal fall time tAS TEST CONDITIONS MIN TYP MAX 1.3 UNIT µs 1.3 µs VINx to VOUTx signal delay (50% - 10%) Unfiltered output 1 1.5 µs VINx to VOUTx signal delay (50% - 50%) Unfiltered output 1.6 2.1 µs VINx to VOUTx signal delay (50% - 90%) Unfiltered output 2.5 3 µs Analog settling time VDD1 step to 3.0 V with VDD2 ≥ 3.0 V, to VOUTP, VOUTN valid, 0.1% settling 500 µs 6.11 Timing Diagram 250 mV INP - INN 0 ± 250 mV tf tr OUTN VCMout OUTP 50% - 10% 50% - 50% 50% - 90% Figure 6-1. Rise, Fall, and Delay Time Definition Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 9 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.12 Insulation Characteristics Curves 500 1600 VDD1 = VDD2 = 3.6 V VDD1 = VDD2 = 5.5 V 1400 1200 300 PS (mW) IS (mA) 400 200 1000 800 600 400 100 200 0 0 0 25 50 75 TA (°C) 100 125 0 150 25 50 D069 75 TA (°C) 100 125 150 D070 Figure 6-3. Thermal Derating Curve for SafetyLimiting Power per VDE Figure 6-2. Thermal Derating Curve for SafetyLimiting Current per VDE 1.E+11 87.5 % 1.E+10 254 Yrs 135 Yrs 1.E+09 Time to Fail (sec) 1.E+08 TDDB Line (< 1 ppm Fail Rate) 1.E+07 VDE Safety Margin Zone 1.E+06 Operating Zone 1.E+05 1.E+04 1.E+03 20 % 1.E+02 1.E+01 500 1500 2500 3500 4500 5500 6500 7500 Applied Voltage (VRMS) TA up to 150°C, stress-voltage frequency = 60 Hz, isolation working voltage = 1500 VRMS, operating lifetime = 135 year Figure 6-4. Reinforced Isolation Capacitor Lifetime Projection 10 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.13 Typical Characteristics at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted) 3.8 3.3 3.4 3.25 3.2 VCMov (V) VCMov (V) 3 2.6 2.2 1.8 3.15 3.1 3.05 3 1.4 2.95 2.9 -40 1 3 3.5 4 4.5 VDD1 (V) 5 5.5 -25 -10 5 20 35 50 65 Temperature (qC) D001 Figure 6-5. Common-Mode Overvoltage Detection Level vs High-Side Supply Voltage 80 95 110 125 D002 Figure 6-6. Common-Mode Overvoltage Detection Level vs Temperature 50 200 VDD1 VDD2 150 40 30 VOS (PV) Devices (%) 100 20 50 0 -50 -100 10 -150 -200 200 175 150 125 75 100 50 0 25 -25 -50 -75 -100 -125 -150 -175 -200 0 3 3.5 4 D023 VOS (PV) 4.5 VDDx (V) 5 5.5 D027 Figure 6-8. Input Offset Voltage vs Supply Voltage Figure 6-7. Input Offset Voltage Histogram 50 200 Device 1 Device 2 Device 3 150 40 50 Devices (%) VOS (PV) 100 0 -50 -100 30 20 10 -150 D026 Figure 6-9. Input Offset Voltage vs Temperature TCVOS (PV/qC) 1 0.8 0.6 0.4 110 125 0.2 95 0 80 -0.2 20 35 50 65 Temperature (°C) -0.4 5 -0.6 -10 -0.8 0 -25 -1 -200 -40 D024 Figure 6-10. Input Offset Drift Histogram Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 11 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.13 Typical Characteristics (continued) at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted) -70 0 -75 -20 -80 CMRR (dB) CMRR (dB) -40 -60 -80 -85 -90 -95 -100 -100 -105 -120 0.001 0.01 0.1 1 fIN (kHz) 10 100 -110 -40 1000 -25 -10 5 D038 Figure 6-11. Common-Mode Rejection Ratio vs Input Frequency 20 35 50 65 Temperature (°C) 80 95 110 125 D039 Figure 6-12. Common-Mode Rejection Ratio vs Temperature 25 -23 -25 15 -27 -29 -5 IIB (PA) IIB (PA) 5 -15 -31 -33 -35 -25 -37 -35 -39 -45 -0.5 -41 0 0.5 1 1.5 VCM (V) 2 2.5 3 3 3.5 4 D003 Figure 6-13. Input Bias Current vs Common-Mode Input Voltage 4.5 VDD1 (V) 5 5.5 D004 Figure 6-14. Input Bias Current vs High-Side Supply Voltage -23 50 -25 40 -27 Devices (%) IIB (PA) -29 -31 -33 30 20 -35 10 -37 -39 D005 Figure 6-15. Input Bias Current vs Temperature 12 0.3 0.2 EG (%) 0.25 0.15 0 0.1 110 125 0.05 95 -0.05 80 -0.1 20 35 50 65 Temperature (°C) -0.15 5 -0.2 -10 -0.25 0 -25 -0.3 -41 -40 D018 Figure 6-16. Gain Error Histogram Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.13 Typical Characteristics (continued) 0.3 0.3 0.2 0.2 0.1 0.1 EG (%) EG (%) at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted) 0 -0.1 Device 1 Device 2 Device 3 0 -0.1 -0.2 -0.2 VDD1 VDD1 -0.3 3 3.5 4 4.5 VDDx (V) 5 -0.3 -40 5.5 -25 -10 D020 Figure 6-17. Gain Error vs Supply Voltage 5 20 35 50 65 Temperature (°C) 80 95 110 125 D021 Figure 6-18. Gain Error vs Temperature 5 50 0 -5 Normalized Gain (dB) Devices (%) 40 30 20 10 -10 -15 -20 -25 -30 -35 -40 30 25 20 15 5 10 0 -5 -10 -15 -20 -25 -30 0 1 10 100 1000 fIN (kHz) D019 TCEG (ppm/qC) Figure 6-19. Gain Error Drift Histogram D007 Figure 6-20. Normalized Gain vs Input Frequency 0° 5 -45° 4.5 OUTN OUTP 4 -90° -135° VOUT (V) Output Phase 3.5 -180° -225° 3 2.5 2 1.5 -270° 1 -315° 0.5 -360° 1 10 100 1000 fIN (kHz) 0 -350 -250 D008 Figure 6-21. Output Phase vs Input Frequency -150 -50 50 150 Differential Input Voltage (mV) 250 350 D006 Figure 6-22. Output Voltage vs Input Voltage Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 13 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.13 Typical Characteristics (continued) at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted) 0.03 0.03 VDD1 VDD2 0.025 0.02 0.02 0.01 Nonlinearity (%) Nonlinearity (%) 0.015 0.005 0 -0.005 -0.01 0.01 0 -0.01 -0.015 -0.02 -0.02 -0.025 -0.03 -250 -200 -150 -100 -50 0 50 100 150 Differential Input Voltage (mV) 200 -0.03 250 3 Figure 6-23. Nonlinearity vs Input Voltage 4 4.5 VDDx (V) 5 5.5 D029 Figure 6-24. Nonlinearity vs Supply Voltage 0.03 -70 Device 1 Device 2 Device 3 0.02 VDD1 VDD2 -75 0.01 -80 THD (dB) Nonlinearity (%) 3.5 D028 0 -85 -0.01 -90 -0.02 -95 -0.03 -40 -100 -25 -10 5 20 35 50 65 Temperature (°C) 80 95 110 125 3 3.5 4 D030 Figure 6-25. Nonlinearity vs Temperature 4.5 VDDx (V) 5 5.5 D056 Figure 6-26. Total Harmonic Distortion vs Supply Voltage -70 10000 Noise Density (PV/—Hz) -75 THD (dB) -80 -85 -90 Device 1 Device 2 Device 3 -95 -100 -40 -25 -10 5 20 35 50 65 Temperature (°C) 80 95 110 125 100 10 0.1 D059 Figure 6-27. Total Harmonic Distortion vs Temperature 14 1000 1 10 Frequency (kHz) 100 1000 D017 Figure 6-28. Input-Referred Noise Density vs Frequency Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.13 Typical Characteristics (continued) 80 80 75 77.5 70 75 65 72.5 SNR (dB) SNR (dB) at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted) 60 VDD1 VDD2 70 55 67.5 50 65 45 62.5 60 40 0 50 100 150 200 |VINP - VINN| (mV) 250 3 300 3.5 4 4.5 VDDx (V) 5 5.5 D034 D032 Figure 6-30. Signal-to-Noise Ratio vs Supply Voltage Figure 6-29. Signal-to-Noise Ratio vs Input Voltage 80 0 77.5 -20 -40 72.5 PSRR (dB) SNR (dB) 75 70 67.5 -60 -80 65 Device 1 Device 2 Device 3 62.5 60 -55 -40 -25 -10 5 20 35 50 65 Temperature (°C) 80 -100 -120 0.001 95 110 125 0.01 0.1 1 10 Ripple Frequency (kHz) D035 Figure 6-31. Signal-to-Noise Ratio vs Temperature 100 1000 D041 Figure 6-32. Power-Supply Rejection Ratio vs Ripple Frequency 1.49 1.49 1.48 1.48 1.47 1.47 1.46 1.46 1.45 1.45 VCMout (V) VCMout (V) VDD2 VDD1 1.44 1.43 1.44 1.43 1.42 1.42 1.41 1.41 1.4 1.4 1.39 3 3.5 4 4.5 VDD2 (V) 5 5.5 1.39 -40 -25 D009 Figure 6-33. Output Common-Mode Voltage vs Low-Side Supply Voltage -10 5 20 35 50 65 Temperature (°C) 80 95 110 125 D010 Figure 6-34. Output Common-Mode Voltage vs Temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 15 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.13 Typical Characteristics (continued) 360 360 340 340 320 320 BW (kHz) BW (kHz) at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted) 300 300 280 280 260 260 240 -40 240 3 3.5 4 4.5 VDD2 (V) 5 5.5 8 8 7.5 7.5 7 7 6.5 6.5 IDDx (mA) IDDx (mA) 5 20 35 50 65 Temperature (°C) 80 95 110 125 D012 8.5 8.5 6 5.5 6 5.5 5 5 4.5 4.5 IDD1 vs VDD1 IDD2 vs VDD2 4 3 3.5 4 4.5 VDDx (V) 5 3.5 -40 5.5 3.5 3.5 3 3 2.5 2.5 tr/tf (Ps) 4 2 1.5 1 1 0.5 0.5 0 4.5 VDD2 (V) 5 5 20 35 50 65 Temperature (°C) 80 95 110 125 D044 2 1.5 4 -10 Figure 6-38. Supply Current vs Temperature 4 3.5 -25 D043 Figure 6-37. Supply Current vs Supply Voltage 3 IDD1 IDD2 4 3.5 tr / tf (Ps) -10 Figure 6-36. Output Bandwidth vs Temperature Figure 6-35. Output Bandwidth vs Low-Side Supply Voltage 5.5 0 -40 -25 D065 Figure 6-39. Output Rise and Fall Time vs Low-Side Supply 16 -25 D011 -10 5 20 35 50 65 Temperature (°C) 80 95 110 125 D066 Figure 6-40. Output Rise and Fall Time vs Temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 6.13 Typical Characteristics (continued) at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted) 3.8 3.8 50% - 90% 50% - 50% 50% - 10% 3.4 3 Signal Delay (Ps) Signal Delay (Ps) 3 50% - 90% 50% - 50% 50% - 10% 3.4 2.6 2.2 1.8 1.4 1 2.6 2.2 1.8 1.4 1 0.6 0.6 0.2 0.2 -40 3 3.5 4 4.5 VDD2 (V) 5 5.5 -25 D067 Figure 6-41. VIN to VOUT Signal Delay vs Low-Side Supply Voltage -10 5 20 35 50 65 Temperature (°C) 80 95 110 125 D068 Figure 6-42. VIN to VOUT Signal Delay vs Temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 17 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 7 Detailed Description 7.1 Overview The AMC1300B-Q1 is a fully differential, precision, isolated amplifier. The input stage of the device consists of a fully differential amplifier that drives a second-order, delta-sigma (ΔΣ) modulator. The modulator converts the analog input signal into a digital bitstream that is transferred across the isolation barrier that separates the high-side from the low-side. On the low-side, the received bitstream is processed by a fourth-order analog filter that outputs a differential signal at the OUTP and OUTN pins that is proportional to the input signal. The SiO2-based, capacitive isolation barrier supports a high level of magnetic field immunity, as described in the ISO72x Digital Isolator Magnetic-Field Immunity application report. The digital modulation used in the AMC1300B-Q1 to transmit data across the isolation barrier, and the isolation barrier characteristics itself, result in high reliability and common-mode transient immunity. 7.2 Functional Block Diagram AMC1300B-Q1 VDD2 Barrier VDD1 Diagnostics Analog Filter GND1 TX / RX INN Isolation û Modulator RX / TX INP OUTP OUTN GND2 7.3 Feature Description 7.3.1 Analog Input The differential amplifier input stage of the AMC1300B-Q1 feeds a second-order, switched-capacitor, feedforward ΔΣ modulator. The gain of the differential amplifier is set by internal precision resistors with a differential input impedance of RIND. The modulator converts the analog input signal into a bitstream that is transferred across the isolation barrier, as described in the Isolation Channel Signal Transmission section. There are two restrictions on the analog input signals INP and INN. First, if the input voltages VINP or VINN exceed the range specified in the Absolute Maximum Ratings table, the input currents must be limited to the absolute maximum value, because the electrostatic discharge (ESD) protection turns on. In addition, the linearity and parametric performance of the device are ensured only when the analog input voltage remains within the linear full-scale range (VFSR) and within the common-mode input voltage range (VCM) as specified in the Recommended Operating Conditions table. 18 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 7.3.2 Isolation Channel Signal Transmission The AMC1300B-Q1 uses an on-off keying (OOK) modulation scheme, as shown in Figure 7-1, to transmit the modulator output bitstream across the SiO2-based isolation barrier. The transmit driver (TX) shown in the Functional Block Diagram transmits an internally-generated, high-frequency carrier across the isolation barrier to represent a digital one and does not send a signal to represent a digital zero. The nominal frequency of the carrier used inside the AMC1300B-Q1 is 480 MHz. The receiver (RX) on the other side of the isolation barrier recovers and demodulates the signal and provides the input to the 4th-order analog filter. The AMC1300B-Q1 transmission channel is optimized to achieve the highest level of common-mode transient immunity (CMTI) and lowest level of radiated emissions caused by the high-frequency carrier and RX/TX buffer switching. Internal Clock Modulator Bitstream on High-side Signal Across Isolation Barrier Recovered Sigal on Low-side Figure 7-1. OOK-Based Modulation Scheme Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 19 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 7.3.3 Analog Output The AMC1300B-Q1 offers a differential analog output comprised of the OUTP and OUTN pins. For differential input voltages (VINP – VINN) in the range from –250 mV to 250 mV, the device provides a linear response with a nominal gain of 8.2. For example, for a differential input voltage of 250 mV, the differential output voltage (VOUTP – VOUTN) is 2.05 V. At zero input (INP shorted to INN), both pins output the same common-mode output voltage VCMout, as specified in the Electrical Characteristics table. For absolute differential input voltages greater than 250 mV but less than 320 mV, the differential output voltage continues to increase in magnitude but with reduced linearity performance. The outputs saturate at a differential output voltage of VCLIPout, as shown in Figure 7-2, if the differential input voltage exceeds the VClipping value. Maximum input range before clipping (VClipping) Linear input range (VFSR) VOUTN VFAILSAFE VCLIPout VCMout VOUTP ± 320 mV ± 250 mV 0 320 mV 250 mV Differential Input Voltage (VINP ± VINN) Figure 7-2. Output Behavior of the AMC1300B-Q1 The AMC1300B-Q1 offers a failsafe feature that simplifies diagnostics on system level. Figure 7-2 shows the failsafe mode, in which the AMC1300B-Q1 outputs a negative differential output voltage that does not occur under normal operating conditions. The failsafe output is active in two cases: • When the high-side supply is missing or below the VDD1UV threshold • When the common-mode input voltage, that is VCM = (VINP + VINN) / 2, exceeds the common-mode overvoltage detection level VCMov Use the maximum VFAILSAFE voltage specified in the Electrical Characteristics table as a reference value for failsafe detection on system level. 7.4 Device Functional Modes The AMC1300B-Q1 is operational when the power supplies VDD1 and VDD2 are applied, as specified in the Recommended Operating Conditions table. 20 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 8 Application and Implementation Note Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes, as well as validating and testing their design implementation to confirm system functionality. 8.1 Application Information The low analog input voltage range, excellent accuracy, and low temperature drift make the AMC1300B-Q1 a high-performance solution for automotive applications where shunt-based current sensing in the presence of high common-mode voltage levels is required. 8.2 Typical Application The AMC1300B-Q1 is ideally suited for shunt-based current sensing applications where accurate current monitoring is required in the presence of high common-mode voltages. Figure 8-1 shows the AMC1300B-Q1 in a typical application. The load current flowing through an external shunt resistor RSHUNT produces a voltage drop that is sensed by the AMC1300B-Q1. The AMC1300B-Q1 digitizes the analog input signal on the high-side, transfers the data across the isolation barrier to the low-side, reconstructs the analog signal, and presents that signal as a differential voltage on the output pins. The differential input, differential output, and the high common-mode transient immunity (CMTI) of the AMC1300B-Q1 ensure reliable and accurate operation even in high-noise environments. Floating Gate Driver Supply + DC Link Low-side supply (3.3 V or 5 V) 1 uF 100 nF AMC1300B-Q1 VDD1 VDD2 INP OUTP INN OUTN GND1 GND2 10 Ÿ 10 nF 1 uF 100 nF 10 Ÿ 10 nF RSHUNT ADC Load 10 Ÿ 10 Ÿ ± DC Link Figure 8-1. Using the AMC1300B-Q1 for Current Sensing in a Typical Application Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 21 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 8.2.1 Design Requirements Table 8-1 lists the parameters for this typical application. Table 8-1. Design Requirements PARAMETER VALUE High-side supply voltage 3.3 V or 5 V Low-side supply voltage 3.3 V or 5 V Voltage drop across RSHUNT for a linear response ±250 mV (maximum) Signal delay (50% VIN to 90% OUTP, OUTN) 3 µs (maximum) 8.2.2 Detailed Design Procedure In Figure 8-1, the high-side power supply (VDD1) for the AMC1300B-Q1 is derived from the floating power supply of the upper gate driver. The floating ground reference (GND1) is derived from the end of the shunt resistor that is connected to the negative input of the AMC1300B-Q1 (INN). If a four-pin shunt is used, the inputs of the AMC1300B-Q1 are connected to the inner leads and GND1 is connected to the outer lead on the INN-side of the shunt. To minimize offset and improve accuracy, route the ground connection as a separate trace that connects directly to the shunt resistor rather than shorting GND1 to INN directly at the input to the device. See the Layout section for more details. 8.2.2.1 Shunt Resistor Sizing Use Ohm's Law to calculate the voltage drop across the shunt resistor (VSHUNT) for the desired measured current: VSHUNT = I × RSHUNT. Consider the following two restrictions when selecting the value of the shunt resistor, RSHUNT: • • The voltage drop caused by the nominal current range must not exceed the recommended differential input voltage range for a linear response: |VSHUNT| ≤ |VFSR| The voltage drop caused by the maximum allowed overcurrent must not exceed the input voltage that causes a clipping output: |VSHUNT| ≤ |VClipping| 8.2.2.2 Input Filter Design TI recommends placing an RC-filter in front of the isolated amplifier to improve signal-to-noise performance of the signal path. Design the input filter such that: • • • The cutoff frequency of the filter is at least one order of magnitude lower than the sampling frequency (20 MHz) of the ΔΣ modulator The input bias current does not generate significant voltage drop across the DC impedance of the input filter The impedances measured from the analog inputs are equal For most applications, the structure shown in Figure 8-2 achieves excellent performance. RSHUNT AMC1300B-Q1 10 Ÿ VDD1 VDD2 INP OUTP INN OUTN GND1 GND2 10 nF 10 Ÿ Figure 8-2. Differential Input Filter 22 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 8.2.2.3 Differential to Single-Ended Output Conversion Figure 8-3 shows an example of a TLVx313-Q1-based signal conversion and filter circuit for systems using single-ended-input ADCs to convert the analog output voltage into digital. With R1 = R2 = R3 = R4, the output voltage equals (VOUTP – VOUTN) + VREF. Tailor the bandwidth of this filter stage to the bandwidth requirement of the system. For most applications, R1 = R2 = R3 = R4 = 3.3 kΩ and C1 = C2 = 330 pF yields good performance. C1 AMC1300B-Q1 VDD1 VDD2 INP OUTP R2 R1 ± ADC R3 INN OUTN GND1 GND2 To MCU + TLV313-Q1 C2 R4 VREF Figure 8-3. Connecting the AMC1300B-Q1 Output to a Single-Ended Input ADC For more information on the general procedure to design the filtering and driving stages of SAR ADCs, see the 18-Bit, 1MSPS Data Acquisition Block (DAQ) Optimized for Lowest Distortion and Noise and 18-Bit Data Acquisition Block (DAQ) Optimized for Lowest Power reference guides, available for download at www.ti.com. 8.2.3 Application Curve One important aspect of power-stage design is the effective detection of an overcurrent condition to protect the switching devices and passive components from damage. To power off the system quickly in the event of an overcurrent condition, a low delay caused by the isolated amplifier is required. Figure 8-4 shows the typical full-scale step response of the AMC1300B-Q1. VOUTP VOUTN VIN Figure 8-4. Step Response of the AMC1300B-Q1 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 23 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 8.3 What to Do and What Not to Do Do not leave the inputs of the AMC1300B-Q1 unconnected (floating) when the device is powered up. If the device inputs are left floating, the input bias current may drive the inputs to a positive value that exceeds the operating common-mode input voltage and the device outputs the fail-safe voltage as described in the Analog Output section. Connect the high-side ground (GND1) to INN, either by a hard short or through a resistive path. A DC current path between INN and GND1 is required to define the input common-mode voltage. Take care not to exceed the input common-mode range as specified in the Recommended Operating Conditions table. For best accuracy, route the ground connection as a separate trace that connects directly to the shunt resistor rather than shorting GND1 to INN directly at the input to the device. See the Layout section for more details. 9 Power Supply Recommendations The AMC1300B-Q1 does not require any specific power up sequencing. The high-side power-supply (VDD1) is decoupled with a low-ESR 100-nF capacitor (C1) parallel to a low-ESR 1-µF capacitor (C2). The low-side power supply (VDD2) is equally decoupled with a low-ESR 100-nF capacitor (C3) parallel to a low-ESR 1-µF capacitor (C4). Place all four capacitors (C1, C2, C3, and C4) as close to the device as possible. The ground reference for the high-side (GND1) is derived from the end of the shunt resistor, which is connected to the negative input (INN) of the device. For best DC accuracy, use a separate trace (as shown in Figure 9-1) to make this connection instead of shorting GND1 to INN directly at the device input. If a four-terminal shunt is used, the device inputs are connected to the inner leads and GND1 is connected to the outer lead on the INN-side of the shunt. INP VDD1 VDD2 C2 1 µF C4 1 µF AMC1300B-Q1 I RSHUNT C1 100 nF C3 100 nF R2 10 Ÿ R1 10 Ÿ C5 10 nF VDD1 VDD2 INP OUTP to RC filter / ADC INN OUTN to RC filter / ADC GND1 GND2 Figure 9-1. Decoupling of the AMC1300B-Q1 Capacitors must provide adequate effective capacitance under the applicable DC bias conditions they experience in the application. Multilayer ceramic capacitors (MLCCs) typically exhibit only a fraction of their nominal capacitance under real-world conditions and this factor must be taken into consideration when selecting these capacitors. This problem is especially acute in low-profile capacitors, in which the dielectric field strength is higher than in taller components. Reputable capacitor manufacturers provide capacitance versus DC bias curves that greatly simplify component selection. 24 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 10 Layout 10.1 Layout Guidelines Figure 10-1 shows a layout recommendation with the critical placement of the decoupling capacitors (as close as possible to the AMC1300B-Q1 supply pins) and placement of the other components required by the device. For best performance, place the shunt resistor close to the INP and INN inputs of the AMC1300B-Q1 and keep the layout of both connections symmetrical. Clearance area, to be kept free of any conductive materials. C2 C4 INN R2 R1 C5 RSHUNT C1 INP VDD2 VDD1 10.2 Layout Example C3 AMC1300B-Q1 OUTP to RC filter / ADC OUTN to RC filter / ADC GND2 GND1 Top Metal Inner or Bottom Layer Metal Via Figure 10-1. Recommended Layout of the AMC1300B-Q1 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 25 AMC1300B-Q1 www.ti.com SBASA40B – APRIL 2020 – REVISED JUNE 2022 11 Device and Documentation Support 11.1 Documentation Support 11.1.1 Related Documentation For related documentation, see the following: • • • • • • • Texas Instruments, Isolation Glossary application report Texas Instruments, Semiconductor and IC Package Thermal Metrics application report Texas Instruments, ISO72x Digital Isolator Magnetic-Field Immunity application report Texas Instruments, TLVx313-Q1 Low-Power, Rail-to-Rail In/Out, 750-µV Typical Offset, 1-MHz Operational Amplifier for Cost-Sensitive Systems data sheet Texas Instruments, 18-Bit, 1-MSPS Data Acquisition Block (DAQ) Optimized for Lowest Distortion and Noise reference guide Texas Instruments, 18-Bit, 1-MSPS Data Acquisition Block (DAQ) Optimized for Lowest Power reference guide Texas Instruments, Isolated Amplifier Voltage Sensing Excel Calculator design tool 11.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on Subscribe to updates to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 11.3 Support Resources TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight from the experts. Search existing answers or ask your own question to get the quick design help you need. Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. 11.4 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 11.5 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 11.6 Glossary TI Glossary This glossary lists and explains terms, acronyms, and definitions. 12 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 26 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AMC1300B-Q1 PACKAGE OPTION ADDENDUM www.ti.com 16-Dec-2021 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) AMC1300BQDWVRQ1 ACTIVE SOIC DWV 8 1000 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 125 MC1300BQ (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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