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INA217AIP

INA217AIP

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    PDIP8_10.16X6.6MM

  • 描述:

    IC OPAMP INSTR 3.4MHZ 8DIP

  • 数据手册
  • 价格&库存
INA217AIP 数据手册
Product Folder Sample & Buy Support & Community Tools & Software Technical Documents INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 INA217 Low-Noise, Low-Distortion Instrumentation Amplifier Replacement for SSM2017 1 Features • • • • • • • 1 Low Noise: 1.3 nV/M √Hz at 1 kHz Low THD+N: 0.004% at 1 kHz, G = 100 Wide Bandwidth: 800 kHz at G = 100 Wide Supply Range: ±4.5 V to ±18 V High CMR: > 100 dB Gain Set With External Resistor DIP-8 and SOL-16 Widebody Packages 2 Applications • • • • Professional Microphone Preamps Moving-coil Transducer Amplifiers Differential Receivers Bridge Transducer Amplifiers 3 Description The INA217 device is a low-noise, low-distortion, monolithic instrumentation amplifier. Currentfeedback circuitry allows the INA217 device to achieve wide bandwidth and excellent dynamic response over a wide range of gain. The INA217 device is ideal for low-level audio signals such as balanced low-impedance microphones. Many industrial, instrumentation, and medical applications also benefit from its low noise and wide bandwidth. Unique distortion cancellation circuitry reduces distortion to extremely low levels, even in high gain. The INA217 device provides near-theoretical noise performance for 200-Ω source impedance. The INA217 device features differential input, low noise, and low distortion that provides superior performance in professional microphone amplifier applications. The INA217device features wide supply voltage, excellent output voltage swing, and high output current drive, making it an optimal candidate for use in high-level audio stages. The INA217 device is available in the same DIP-8 and SOL-16 wide body packages and pinouts as the SSM2017. For a smaller package, see the INA163 device in SO-14 narrow. The INA217 device is specified over the temperature range of –40°C to 85°C. Device Information(1) PART NUMBER INA217 PACKAGE BODY SIZE (NOM) SOIC (16) 10.30 mm × 7.50 mm PDIP (8) 9.81 mm × 6.35 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 1 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. INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com Simplified Schematic V+ 7 INA217 VIN– 2 6kΩ 6kΩ A1 1 RG1 5kΩ 6 A3 5kΩ VOUT G=1+ 8 6kΩ RG2 10kΩ RG 6kΩ A2 VIN+ 3 4 V– 2 Submit Documentation Feedback 5 REF Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 3 4 5 6.1 6.2 6.3 6.4 6.5 6.6 5 5 5 5 6 8 Absolute Maximum Ratings ...................................... ESD Ratings ............................................................ Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics: VS = ±15 V....................... Typical Characteristics .............................................. Detailed Description ............................................ 10 7.1 Overview ................................................................. 10 7.2 Functional Block Diagram ....................................... 10 7.3 Feature Description................................................. 10 7.4 Device Functional Modes........................................ 12 8 Application and Implementation ........................ 13 8.1 Application Information............................................ 13 8.2 Typical Application ................................................. 13 9 Power Supply Recommendations...................... 14 10 Layout................................................................... 15 10.1 Layout Guidelines ................................................. 15 10.2 Layout Example .................................................... 15 11 Device and Documentation Support ................. 16 11.1 11.2 11.3 11.4 11.5 11.6 Device Support...................................................... Documentation Support ....................................... Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 16 16 16 17 17 17 12 Mechanical, Packaging, and Orderable Information ........................................................... 17 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision B (February 2005) to Revision C • Page Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section ................................................................................................. 1 Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 3 INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com 5 Pin Configuration and Functions DW Package 16-Pin SOIC Top View P Package 8-Pin PDIP Top View NC 1 16 NC RG1 2 15 RG2 NC 3 14 NC VIN– 4 13 V+ VIN+ 5 12 NC NC 6 11 VOUT V– 7 10 REF NC 8 9 RG1 1 8 RG2 VIN– 2 7 V+ VIN+ 3 6 VOUT V– 4 5 REF DIP-8 NC SOL-16 NC = No Internal Connection Pin Functions PIN NAME NO. I/O DESCRIPTION PDIP NC 1 — No internal connection RG1 2 I NC 3 — VIN– 4 I Inverting input VIN+ 5 I Non-inverting input NC 6 — No internal connection V– 7 I negative power supply NC 8 — No internal connection NC 9 — No internal connection REF 10 I Reference input VOUT 11 O Output NC 12 — No internal connection V+ 13 I Positive power supply NC 14 — No internal connection RG2 15 I NC 16 — RG1 1 I Gain setting pin, for gains greater than one, connect an external resistor between pins 1 and 8 VIN– 2 I Inverting input VIN+ 3 I Non-inverting input V– 4 I negative power supply REF 5 I Reference input VOUT 6 O Output V+ 7 I Positive power supply RG2 8 I Gain setting pin, for gains greater than one, connect an external resistor between pins 2 and 15 Gain setting pin, for gains greater than one, connect an external resistor between pins 2 and 15 No internal connection Gain setting pin, for gains greater than one, connect an external resistor between pins 2 and 15 No internal connection SOIC 4 Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) MIN V+ to V– MAX UNIT ±18 V Supply voltage Voltage Signal input terminals (2) (V–) – 0.5 (V+) + 0.5 V 10 mA Current (2) Output short circuit (3) Continuous Operating temperature –55 Junction temperature Tstg (1) (2) (3) Storage temperature –55 125 °C 300 °C 150 °C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5 V beyond the supply rails should be current limited to 10 mA or less. Short-circuit to ground, one amplifier per package. 6.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) ±4000 Charged-device model (CDM), per JEDEC specification JESD22C101 (2) ±1000 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) V+ to V– Supply voltage TA Ambient Temperature MIN NOM MAX ±4.5 ±15 ±18 UNIT V -40 25 85 °C 6.4 Thermal Information INA217 THERMAL METRIC (1) DW (SOIC) P (PDIP) UNIT 16 PINS 8 PINS RθJA Junction-to-ambient thermal resistance 64.3 46.2 °C/W RθJC(top) Junction-to-case (top) thermal resistance 24.9 34.5 °C/W RθJB Junction-to-board thermal resistance 29.4 23.5 °C/W ψJT Junction-to-top characterization parameter 3.3 11.7 °C/W ψJB Junction-to-board characterization parameter 28.8 23.3 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance N/A N/A °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 5 INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com 6.5 Electrical Characteristics: VS = ±15 V TA = 25°C, RL = 2 kΩ, VS = ±15 V, unless otherwise noted. PARAMETER TEST CONDITIONS TA = 25°C MIN GAIN EQUATION (1) TYP MAX G = 1 + 10k/RG Range 1 to 10000 Gain Error UNIT V/V G=1 ±0.1% ±0.25% G = 10 ±0.2% ±0.7% G = 100 ±0.2% G = 1000 ±0.5% GAIN TEMPERATURE DRIFT COEFFICIENT Nonlinearity G=1 TA = –40°C to 85°C ±3 ±10 ppm/°C G > 10 TA = –40°C to 85°C ±40 ±100 ppm/°C G=1 ±0.0003 % of FS G = 100 ±0.0006 % of FS 1.3 nV/√Hz fO = 100 Hz 1.5 nV/√Hz fO = 10 Hz 3.5 nV/√Hz fO = 1 kHz 0.8 pA/√Hz 90 nV/√Hz INPUT STAGE NOISE fO = 1 kHz Voltage Noise Current Noise, RSOURCE = 0 Ω OUTPUT STAGE NOISE Voltage Noise, fO = 1 kHz INPUT OFFSET VOLTAGE Input Offset Voltage VCM = VOUT = 0 V 50 + 2000/G vs Temperature TA = –40°C to 85°C 1 + 20/G vs Power Supply VS = ±4.5 V to ±18 V 1 + 50/G 250 + 5000/G µV µV/°C 3 + 200/G µV/V INPUT VOLTAGE RANGE Common-Mode Voltage Range CommonMode Rejection G=1 VIN+ – VIN– = 0V (V+) – 4 (V+) – 3 VIN+ – VIN– = 0V (V–) + 4 (V–) + 3 V 70 80 dB 100 116 dB VCM = ±11 V, RSRC = 0 Ω G = 100 V INPUT BIAS CURRENT Initial Bias Current vs Temperature 2 TA = –40°C to 85°C Initial Offset Current vs Temperature 10 0.1 TA = –40°C to 85°C 12 0.5 µA nA/°C 1 µA nA/°C INPUT IMPEDANCE Differential 60 || 2 MΩ || pF Common-Mode 60 || 2 MΩ || pF DYNAMIC RESPONSE Bandwidth, Small Signal, –3d B G=1 3.4 MHz G = 100 800 kHz 15 V/µs Slew Rate THD+Noise, f = 1 kHz Settling Time 6 0.004% 0.1% G = 100, 10V Step 2 µs 0.01% G = 100, 10V Step 3.5 µs 1 µs Overload Recovery (1) G = 100 50% Overdrive Gain accuracy is a function of external RG. Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 Electrical Characteristics: VS = ±15 V (continued) TA = 25°C, RL = 2 kΩ, VS = ±15 V, unless otherwise noted. PARAMETER TEST CONDITIONS TA = 25°C MIN TYP (V+) – 2 (V–) + 2 (V+) – 1.8 (V–) + 1.8 MAX UNIT OUTPUT Voltage RL to GND Load Capacitance Stability Short Circuit Current Continuous-to-Common V V 1000 pF ±60 mA POWER SUPPLY Rated Voltage ±15 Voltage Range Current, Quiescent ±4.5 IO = 0 mA ±10 V ±18 V ±12 mA TEMPERATURE RANGE Specification –40 85 °C Operating –40 125 °C Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 7 INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com 6.6 Typical Characteristics At TA = 25°C, VS = ±15 V, RL = 2 kΩ, unless otherwise noted. 0.1 70 G = 1000 60 G = 1000 50 G = 100 30 20 0.01 THD+N (%) Gain (dB) 40 G = 10 G = 100 0.001 10 0 G = 10 G=1 0.0001 –20 10k 100k 1M 20 10M 100 1k Figure 2. THD+N vs Frequency Figure 1. Gain vs Frequency 10.0 Current Noise Density (pA/ Hz) Noise (RTI) (nV/√Hz) 1k G=1 100 G = 10 10 G = 1000 G = 500 G = 100 1 0.1 1 10 100 1k 10k 1 10 Frequency (Hz) 100 1k 10k Frequency (Hz) Figure 3. Noise Voltage (RTI) vs Frequency Figure 4. Current Noise Spectral Density 140 140 G = 1000 100 G = 100 80 G = 10 60 G=1 Power-Supply Rejection (dB) 120 Input Referred CMR (dB) 10k 20k Frequency (Hz) Frequency (Hz) 40 20 120 G = 100, 1000 G = 10 100 G=1 80 60 40 20 0 0 10 100 1k 10k 100k 1M 1 Figure 5. CMR vs Frequency 10 100 1k 10k 100k 1M Frequency (Hz) Frequency (Hz) 8 VO = 7Vrms RL = 10kΩ G=1 –10 Figure 6. Power-Supply Rejection vs Frequency Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 Typical Characteristics (continued) At TA = 25°C, VS = ±15 V, RL = 2 kΩ, unless otherwise noted. V+ 10 20V Step 8 (V+) – 4 Settling Time (µs) Output Voltage to Rail (V) (V+) – 2 (V+) – 6 (V–) + 6 (V–) + 4 0.01% 6 4 2 (V–) + 2 0.1% 0 V– 0 10 20 30 40 50 1 60 10 100 1000 Gain Output Current (mA) Figure 8. Settling Time vs Gain 20mV/div 20mV/div Figure 7. Output Voltage Swing vs Output Current 10µs/div 2.5µs/div G=1 G = 100 Figure 10. Small-Signal Transient Response 5V/div 5V/div Figure 9. Small-Signal Transient Response 2.5µs/div 2.5µs/div G=1 G = 100 Figure 11. Large-Signal Transient Response Figure 12. Large-Signal Transient Response Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 9 INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com 7 Detailed Description 7.1 Overview The INA217 is a classical three-amp instrumentation amplifier designed for audio applications. Featuring low noise and low distortion the INA217 is ideally suited for amplifying low level audio signals. With a wide supply voltage, wide output voltage swing, and high output current drive the INA217 is also ideally suited for processing high level audio signals. Specified from –40°C to 85°C the INA217 is well suited for industrial applications. 7.2 Functional Block Diagram V+ 7 INA217 VIN– 2 6kΩ 6kΩ A1 1 RG1 5kΩ 6 A3 5kΩ VOUT G=1+ 8 6kΩ RG2 10kΩ RG 6kΩ A2 VIN+ 3 4 V– 5 REF 7.3 Feature Description 7.3.1 Basic Connections Figure 13 shows the basic connections required for operation. Power supplies should be bypassed with 0.1-μF tantalum capacitors near the device pins. The output Reference (pin 5) should be a low-impedance connection. Resistance of a few Ωs in series with this connection will degrade the common-mode rejection of the INA217. 10 Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 Feature Description (continued) V+ 0.1µF 7 INA217 2 VIN– 1 6kΩ 6kΩ A1 5kΩ RG A3 5kΩ VOUT 6 G=1+ 8 VIN+ 6kΩ 6kΩ A2 10000 RG REF 5 3 4 0.1µF V+ Sometimes Shown in Simplified Form: VIN– RG INA217 V– GAIN (V/V) (dB) 1 0 2 6 5 14 10 20 20 26 50 34 100 40 200 46 500 54 1000 60 2000 66 RG (Ω) NC(1) 10000 2500 1111 526 204 101 50 20 10 5 NOTE: (1) NC = No Connection. VO VIN+ V– Figure 13. Basic Circuit Connections 7.3.2 Gain-Set Resistor Gain is set with an external resistor, RG, as shown in Figure 13. The two internal 5-kΩ feedback resistors are laser-trimmed to 5-kΩ within approximately ±0.2%. Equation 1 shows the gain equation for the INA217. 10 000 G = 1+ RG (1) The temperature coefficient of the internal 5-kΩ resistors is approximately ±25 ppm/°C. Accuracy and TCR of the external RG will also contribute to gain error and temperature drift. These effects can be inferred from the gain equation. Make a short, direct connection to the gain set resistor, RG. Avoid running output signals near these sensitive input nodes. 7.3.3 Noise Performance The INA217 provides very low noise with low-source impedance. Its 1.3-nV/M √Hz voltage noise delivers neartheoretical noise performance with a source impedance of 200 Ω. The input stage design used to achieve this low noise results in relatively high input bias current and input bias current noise. As a result, the INA217 may not provide the best noise performance with a source impedance greater than 10 kΩ. For source impedance greater than 10 kΩ, other instrumentation amplifiers may provide improved noise performance. 7.3.4 Input Considerations Very low source impedance (less than 10 Ω) can cause the INA217 to oscillate. This depends on circuit layout, signal source, and input cable characteristics. An input network consisting of a small inductor and resistor, as shown in Figure 14, can greatly reduce any tendency to oscillate. This is especially useful if a variety of input sources are to be connected to the INA217. Although not shown in other figures, this network can be used as needed with all applications shown. Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 11 INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com Feature Description (continued) V+ 47Ω 2 VIN– 1.2µH 1 1.2µH 8 7 6 INA217 VIN+ VO 5 4 3 47Ω V– Figure 14. Input Stabilization Network 7.3.5 Offset Voltage Trim A variable voltage applied to pin 5, as shown in Figure 15, can be used to adjust the output offset voltage. A voltage applied to pin 5 is summed with the output signal. An operational amplifier connected as a buffer is used to provide a low impedance at pin 5 to assure good common-mode rejection. V+ 2 7 1 6 INA217 RG 8 3 VO V+ 5 4 100µA V– 150Ω OPA237 10kΩ 150Ω 100µA V– Figure 15. Offset Voltage Adjustment Circuit 7.4 Device Functional Modes The INA217 has a single functional mode of operation. The mode is operational when the power supply voltage exceeds ±4.5 V. The maximum power supply voltage is ±18 V. The INA217 is specified over the temperature range from –40°C to 85°C and is operational to 125°C. 12 Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 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. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information The INA217 is used in professional audio equipment such as professional microphone preamps, moving-coil transducer amplifiers, differential receivers, and bridge transducer amplifiers. 8.2 Typical Application Figure 16 shows a typical circuit for a professional microphone input amplifier. Phantom Power +48V R3 47kΩ R1 6.8kΩ 47µF R2 6.8kΩ +15V +15V C1(1) 47µF + 1 Female XLR Connector + 3 IN4148(4) 7 +15V 60V 2 0.1µF R6(2) 8Ω A1 INA217 C2(1) 47µF + IN4148(4) 4 R7(3) 1.6kΩ 60V –15V VO 5 –15V R4 2.2kΩ 6 R5 2.2kΩ 1MΩ 0.1µF 0.1µF Optional DC output control loop. A2 OPA137 –15V NOTES: (1) Use non-polar capacitors if phantom power is to be turned off. (2) R6 sets maximum gain. (3) R7 sets minimum gain. (4) Optional IN4148 prevents damage due to ESD and hot-plugging. Figure 16. Phantom-Powered Microphone Preamplifier 8.2.1 Design Requirements • • • • 48-V, Phantom powered, remotely located microphone Circuitry operates from ±15-V power supplies Low distortion and noise over the audio frequency band Gain range from to 20 db to 60 db 8.2.2 Detailed Design Procedure R1 and R2 provide a current path for conventional 48-V phantom power source for a remotely located microphone. An optional switch allows phantom power to be disabled. C1 and C2 block the phantom power voltage from the INA217 input circuitry. Non-polarized capacitors should be used for C1 and C2 if phantom power is to be disabled. For additional input protection against ESD and hot-plugging, four IN4148 diodes may be connected from the input to supply lines. Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 13 INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com Typical Application (continued) R4 and R5 provide a path for input bias current of the INA217. Input offset current (typically 100 nA) creates a DC differential input voltage that will produce an output offset voltage. This is generally the dominant source of output offset voltage in this application. With a maximum gain of 1000 (60 dB), the output offset voltage can be several volts. This may be entirely acceptable if the output is AC-coupled into the subsequent stage. An alternate technique is shown in Figure 16. An inexpensive FET-input operational amplifier in a feedback loop drives the DC output voltage to 0 V. A2 is not in the audio signal path and does not affect signal quality. Gain is set with a variable resistor, R7, in series with R6. R6 determines the maximum gain. The total resistance, R6 + R7, determines the lowest gain. A special reverse-log taper potentiometer for R7 can be used to create a linear change (in dB) with rotation. 8.2.3 Application Curve 0.05 0.03 0.02 Gain = 20 dB Gain = 40 dB Gain = 60 dB THD + N (%) 0.01 0.007 0.005 0.003 0.002 0.001 0.0007 0.0005 0 5000 10000 15000 Frequency (Hz) 20000 D001 Figure 17. THD + Noise for the Phantom Powered Microphone Circuit 9 Power Supply Recommendations The INA217 is specified for operation from ±4.5 V to ±18 V; many specifications apply from –40°C to 85°C. Parameters that can exhibit significant variance with regard to operating voltage or temperature are presented in the Typical Characteristics. 14 Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 10 Layout 10.1 Layout Guidelines For best operational performance of the device, use good PCB layout practices, including: • Noise can propagate into analog circuitry through the power pins of the circuit as a whole and op amp itself. Bypass capacitors are used to reduce the coupled noise by providing low-impedance power sources local to the analog circuitry. – Connect low-ESR, 0.1-µF ceramic bypass capacitors between each supply pin and ground, placed as close to the device as possible. A single bypass capacitor from V+ to ground is applicable for singlesupply applications. • Separate grounding for analog and digital portions of circuitry is one of the simplest and most-effective methods of noise suppression. One or more layers on multilayer PCBs are usually devoted to ground planes. A ground plane helps distribute heat and reduces EMI noise pickup. Make sure to physically separate digital and analog grounds paying attention to the flow of the ground current. For more detailed information, see Circuit Board Layout Techniques, SLOA089. • To reduce parasitic coupling, run the input traces as far away from the supply or output traces as possible. If these traces cannot be kept separate, crossing the sensitive trace perpendicular is much better as opposed to in parallel with the noisy trace. • Place the external components as close to the device as possible. • Keep the length of input traces as short as possible. Always remember that the input traces are the most sensitive part of the circuit. • Consider a driven, low-impedance guard ring around the critical traces. A guard ring can significantly reduce leakage currents from nearby traces that are at different potentials. • TI recommends cleaning the PCB following board assembly for best performance. • Any precision integrated circuit may experience performance shifts due to moisture ingress into the plastic package. Following any aqueous PCB cleaning process, TI recommends baking the PCB assembly to remove moisture introduced into the device packaging during the cleaning process. A low temperature, post cleaning bake at 85°C for 30 minutes is sufficient for most circumstances. 10.2 Layout Example RG Keep input traces short and run the input traces as far away from the supply lines as possible Place component close to device to reduce parasitic errors RG1 RG2 INVERTING INPUT VIN- V+ NON-INVERTING INPUT VIN+ VOUT VS± V± REF Ground (GND) plane on another layer Use low-ESR, ceramic bypass capacitor. Place as close to the device as possible V+ OUT Ground Use low-ESR, ceramic bypass capacitor. Place as close to the device as possible Figure 18. INA217 Layout Example Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 15 INA217 SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 www.ti.com 11 Device and Documentation Support 11.1 Device Support 11.1.1 Development Support 11.1.1.1 TINA-TI™ (Free Software Download) TINA™ is a simple, powerful, and easy-to-use circuit simulation program based on a SPICE engine. TINA-TI is a free, fully-functional version of the TINA software, preloaded with a library of macro models in addition to a range of both passive and active models. TINA-TI provides all the conventional dc, transient, and frequency domain analysis of SPICE, as well as additional design capabilities. Available as a free download from the Analog eLab Design Center, TINA-TI offers extensive post-processing capability that allows users to format results in a variety of ways. Virtual instruments offer the ability to select input waveforms and probe circuit nodes, voltages, and waveforms, creating a dynamic quick-start tool. NOTE These files require that either the TINA software (from DesignSoft™) or TINA-TI software be installed. Download the free TINA-TI software from the TINA-TI folder. 11.1.1.2 TI Precision Designs TI Precision Designs are available online at http://www.ti.com/ww/en/analog/precision-designs/. TI Precision Designs are analog solutions created by TI’s precision analog applications experts and offer the theory of operation, component selection, simulation, complete PCB schematic and layout, bill of materials, and measured performance of many useful circuits. 11.1.1.3 WEBENCH® Filter Designer WEBENCH® Filter Designer is a simple, powerful, and easy-to-use active filter design program. The WEBENCH Filter Designer lets you create optimized filter designs using a selection of TI operational amplifiers and passive components from TI's vendor partners. Available as a web based tool from the WEBENCH® Design Center, WEBENCH® Filter Designer allows you to design, optimize, and simulate complete multistage active filter solutions within minutes. 11.2 Documentation Support 11.2.1 Related Documentation For related documentation see the following: • Circuit Board Layout Techniques, SLOA089. • Shelf-Life Evaluation of Lead-Free Component Finishes, SZZA046. 11.3 Community Resources The following links connect to TI community resources. Linked contents are 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. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 16 Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 INA217 www.ti.com SBOS247C – JUNE 2002 – REVISED NOVEMBER 2015 11.4 Trademarks TINA-TI, E2E are trademarks of Texas Instruments. TINA, DesignSoft are trademarks of DesignSoft, Inc. All other trademarks are the property of their respective owners. 11.5 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 11.6 Glossary SLYZ022 — 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. Submit Documentation Feedback Copyright © 2002–2015, Texas Instruments Incorporated Product Folder Links: INA217 17 PACKAGE OPTION ADDENDUM www.ti.com 27-Sep-2022 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) Samples (4/5) (6) INA217AIDWR ACTIVE SOIC DW 16 2000 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 125 INA217 Samples INA217AIDWT ACTIVE SOIC DW 16 250 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 125 INA217 Samples (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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