LT1810CS8

LT1809/LT1810 Single/Dual 180MHz, 350V/µs Rail-to-Rail Input and Output Low Distortion Op Amps FEATURES s s s s s s s s s s s s s s s s DESCRIPTIO –3dB Bandwidth: 320MHz, AV = 1 Gain-Bandwidth Product: 180MHz, AV ≥ 10 Slew Rate: 350V/µs Wide Supply Range: 2.5V to 12.6V Large Output Current: 85mA Low Distortion, 5MHz: – 90dBc Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Input Offset Voltage, Rail-to-Rail: 2.5mV Max Common Mode Rejection: 89dB Typ Power Supply Rejection: 87dB Typ Open-Loop Gain: 100V/mV Typ Shutdown Pin: LT1809 Single in 8-Pin SO and 6-Pin SOT-23 Packages Dual in 8-Pin SO and MSOP Packages Operating Temperature Range: – 40°C to 85°C The LT®1809/LT1810 are single/dual low distortion railto-rail input and output op amps with a 350V/µs slew rate. These amplifiers have a –3dB bandwidth of 320MHz at unity-gain, a gain-bandwidth product of 180MHz (AV ≥ 10) and an 85mA output current to fit the needs of low voltage, high performance signal conditioning systems. The LT1809/LT1810 have an input range that includes both supply rails and an output that swings within 20mV of either supply rail to maximize the signal dynamic range in low supply applications. The LT1809/LT1810 have very low distortion (–90dBc) up to 5MHz that allows them to be used in high performance data acquisition systems. The LT1809/LT1810 maintain their performance for supplies from 2.5V to 12.6V and are specified at 3V, 5V and ± 5V supplies. The inputs can be driven beyond the supplies without damage or phase reversal of the output. The LT1809 is available in the 8-pin SO package with the standard op amp pinout and the 6-pin SOT-23 package. The LT1810 features the standard dual op amp pinout and is available in 8-pin SO and MSOP packages. These devices can be used as a plug-in replacement for many op amps to improve input/output range and performance. APPLICATIO S s s s s s Driving A/D Converters Low Voltage Signal Processing Active Filters Rail-to-Rail Buffer Amplifiers Video Line Driver , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO Distortion vs Frequency –40 –50 –60 –70 –80 –90 –100 1809 TA01 High Speed ADC Driver 5V 5V VIN 1VP-P AV = +1 VIN = 2VP-P VS = ± 5V DISTORTION (dB) + LT1809 R3 49.9Ω +AIN C1 470pF –5V R2 1k –AIN – LTC®1420 PGA GAIN = 1 REF = 2.048V • • • 12 BITS 10Msps RL = 100Ω, 3RD –5V R1 1k –110 0.3 U RL = 100Ω, 2ND RL = 1k, 3RD RL = 1k, 2ND 1 FREQUENCY (MHz) 1809 TA02 U U 10 30 1 LT1809/LT1810 ABSOLUTE AXI U RATI GS Total Supply Voltage (V + to V –) ........................... 12.6V Input Voltage (Note 2) .............................................. ±VS Input Current (Note 2) ........................................ ±10mA Output Short-Circuit Duration (Note 3) ............ Indefinite Operating Temperature Range (Note 4) .. – 40°C to 85°C PACKAGE/ORDER I FOR ATIO TOP VIEW OUT 1 V– 2 + IN 3 6 V+ 5 SHDN 4 –IN ORDER PART NUMBER SHDN 1 LT1809CS6 LT1809IS6 S6 PART MARKING LTKY LTUF ORDER PART NUMBER S6 PACKAGE 6-LEAD PLASTIC SOT-23 TJMAX = 150°C, θJA = 145°C/W (Note 9) TOP VIEW OUT A –IN A +IN A V– 1 2 3 4 8 7 6 5 V+ OUT B –IN B +IN B LT1810CMS8 LT1810IMS8 MS8 PART MARKING LTRF LTTQ MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150°C, θJA = 130°C/W (Note 9) Consult factory for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER VOS Input Offset Voltage TA = 25°C. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply, unless otherwise noted. CONDITIONS VCM = V + LT1809 SO-8 VCM = V – LT1809 SO-8 VCM = V + VCM = V – VCM = V – to V + LT1809 SO-8 VCM = V – to V + VCM = V + VCM = V – + 0.2V VCM = V – + 0.2V to V + VCM = V + VCM = V – + 0.2V MIN TYP 0.6 0.6 0.6 0.6 0.3 0.3 0.7 – 27.5 1.8 –13 14.8 0.1 0.2 MAX 2.5 2.5 3.0 3.0 2.0 2.5 6 8 35.5 4 8 UNITS mV mV mV mV mV mV mV µA µA µA µA µA ∆VOS Input Offset Shift Input Offset Voltage Match (Channel-to-Channel) (Note 10) IB ∆ IB Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note 10) 2 U U W WW U W (Note 1) Specified Temperature Range (Note 5) ... – 40°C to 85°C Junction Temperature ........................................... 150°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C TOP VIEW 8 – + 7 6 5 NC V+ OUT NC ORDER PART NUMBER LT1809CS8 LT1809IS8 S8 PART MARKING 1809 1809I ORDER PART NUMBER LT1810CS8 LT1810IS8 S8 PART MARKING 1810 1810I –IN 2 +IN 3 V– 4 S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 100°C/W (Note 9) TOP VIEW OUT A 1 –IN A 2 +IN A 3 V– 4 B 5 +IN B A 8 V+ 7 OUT B 6 –IN B S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 100°C/W (Note 9) LT1809/LT1810 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER IOS ∆IOS en in CIN AVOL Input Offset Current Input Offset Current Shift Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain TA = 25°C. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply, unless otherwise noted. CONDITIONS VCM VCM = V – + 0.2V VCM = V – + 0.2V to V + f = 10kHz f = 10kHz VS = 5V, VO = 0.5V to 4.5V, RL = 1k to VS/2 VS = 5V, VO = 1V to 4V, RL = 100Ω to VS/2 VS = 3V, VO = 0.5V to 2.5V, RL = 1k to VS/2 VS = 5V, VCM = V – to V + VS = 3V, VCM = V – to V + VS = 5V, VCM = V – to V + VS = 3V, VCM = V – to V + VS = 2.5V to 10V, VCM = 0V VS = 2.5V to 10V, VCM = 0V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA V S = 5V V S = 3V VS = 5V, VSHDN = 0.3V VS = 3V, VSHDN = 0.3V VS = 5V, VSHDN = 0.3V VS = 3V, VSHDN = 0.3V VSHDN = 0.3V VS – 0.5 VSHDN = 0.3V to 4.5V, RL = 100 VSHDN = 4.5V to 0.3V, RL = 100 Frequency = 2MHz VS = 5V, AV = – 1, RL = 1k, VO = 4VP-P VS = 5V, VOUT = 4VP-P VS = 5V, AV = 1, RL = 1k, VO = 2VP-P, fC = 5MHz 0.1%, VS = 5V, VSTEP = 2V, AV = – 1, RL = 500Ω VS = 5V, AV = 2, RL = 150Ω VS = 5V, AV = 2, RL = 150Ω 80 50 160 300 23.5 – 86 27 0.015 0.05 ± 45 ± 35 25 4 15 66 61 60 55 V– 71 65 87 87 2.3 12 50 180 20 80 330 ± 85 ± 70 12.5 0.55 0.31 420 220 0.1 17 1.25 0.90 750 500 75 0.3 2.5 50 120 375 80 180 650 = V+ MIN TYP 0.05 0.2 0.25 16 5 2 80 10 42 82 78 82 78 V+ MAX 1.2 4 5.2 UNITS µA µA µA nV/√Hz pA/√Hz pF V/mV V/mV V/mV dB dB dB dB V dB dB V mV mV mV mV mV mV mA mA mA mA mA µA µA µA V V ns ns MHz V/µs MHz dB ns % Deg CMRR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 10) Input Common Mode Range PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 10) Minimum Supply Voltage (Note 6) VOL Output Voltage Swing LOW (Note 7) VOH Output Voltage Swing HIGH (Note 7) ISC IS Short-Circuit Current Supply Current per Amplifier Supply Current, Shutdown ISHDN SHDN Pin Current Output Leakage Current, Shutdown VL VH tON tOFF GBW SR FPBW THD tS ∆G ∆θ SHDN Pin Input Voltage Low SHDN Pin Input Voltage High Turn-On Time Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth Total Harmonic Distortion Settling Time Differential Gain (NTSC) Differential Phase (NTSC) 3 LT1809/LT1810 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER VOS Input Offset Voltage The q denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply, unless otherwise noted. CONDITIONS VCM = V + LT1809 SO-8 VCM = V – LT1809 SO-8 VCM = V + VCM = V – VCM = V + VCM = V – VCM = V – to V + LT1809 SO-8 VCM = V – to V + VCM = V –, VCM = V + VCM = V + – 0.2V VCM = V – + 0.4V VCM = V – + 0.4V to V + – 0.2V VCM = V + – 0.2V VCM = V – + 0.4V VCM = V + – 0.2V VCM = V – + 0.4V VCM = V – + 0.4V to V + – 0.2V VS = 5V, VO = 0.5V to 4.5V, RL = 1k to VS/2 VS = 5V, VO = 1V to 4V, RL = 100Ω to VS/2 VS = 3V, VO = 0.5V to 2.5V, RL = 1k to VS/2 VS = 5V, VCM = V – to V + VS = 3V, VCM = V – to V + VS = 5V, VCM = V –, VCM = V + VS = 3V, VCM = V –, VCM = V + VS = 2.5V to 10V, VCM = 0V VS = 2.5V to 10V, VCM = 0V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA V S = 5V V S = 3V VS = 5V, VSHDN = 0.3V VS = 3V, VSHDN = 0.3V VS = 5V, VSHDN = 0.3V VS = 3V, VSHDN = 0.3V VSHDN = 0.3V q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q VS – 0.5 MIN TYP 1 1 1 1 9 9 0.5 0.5 1.2 2 –14 16 0.1 0.5 0.05 0.40 0.45 MAX 3.0 3.0 3.5 3.5 25 25 2.5 3.0 6.5 10 40 5 10 1.5 4.5 6 UNITS mV mV mV mV µV/°C µV/°C mV mV mV µA µA µA µA µA µA µA µA V/mV V/mV V/mV dB dB dB dB VOS TC ∆VOS Input Offset Voltage Drift (Note 8) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note 10) IB ∆ IB Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note 10) – 30 IOS ∆IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain 20 3.5 12 64 60 58 54 V– 70 64 75 8.5 40 80 75 80 75 V+ 83 83 2.3 12 55 200 50 110 370 2.5 60 140 400 120 220 700 CMRR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 10) Input Common Mode Range V dB dB V mV mV mV mV mV mV mA mA PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 10) Minimum Supply Voltage (Note 6) VOL Output Voltage Swing LOW (Note 7) VOH Output Voltage Swing HIGH (Note 7) ISC IS Short-Circuit Current Supply Current per Amplifier Supply Current, Shutdown ±40 ±30 ±75 ± 65 15 0.58 0.35 420 220 2 0.3 20 1.4 1.1 850 550 mA mA mA µA µA µA V V ISHDN SHDN Pin Current Output Leakage Current, Shutdown VL VH SHDN Pin Input Voltage Low SHDN Pin Input Voltage High 4 LT1809/LT1810 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER tON tOFF GBW SR FPBW Turn-On Time Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth The q denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply, unless otherwise noted. CONDITIONS VSHDN = 0.3V to 4.5V, RL = 100 VSHDN = 4.5V to 0.3V, RL = 100 Frequency = 2MHz VS = 5V, AV = – 1, RL = 1k, VO = 4VP-P VS = 5V, VOUT = 4VP-P q q q q q MIN TYP 80 50 145 250 20 MAX UNITS ns ns MHz V/µs MHz The q denotes the specifications which apply over the – 40°C ≤ TA ≤ 85°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply, unless otherwise noted. (Note 5) SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS VCM = V + LT1809 SO-8 VCM = V – LT1809 SO-8 VCM = V + VCM = V – VCM = V + VCM = V – VCM = V – to V+ LT1809 SO-8 VCM = V – VCM = V +, VCM = V – VCM = V + – 0.2V VCM = V – + 0.4V VCM = V – + 0.4V to V + – 0.2V VCM = V + VCM = V – VCM = V + VCM = V – VCM = V – – 0.2V + 0.4V – 0.2V + 0.4V + 0.4V to V + – 0.2V q q q q q q q q q q q q q q q q q q q q q q q q q MIN TYP 1 1 1 1 9 9 0.5 0.5 1.2 2 –17 19 0.2 0.6 0.08 0.5 0.58 MAX 3.5 3.5 4.0 4.0 25 25 3.0 3.5 7 12 47 6 12 2 6 7.5 UNITS mV mV mV mV µV/°C µV/°C mV mV mV µA µA µA µA µA µA µA µA V/mV V/mV V/mV dB dB dB dB VOS TC ∆VOS Input Offset Voltage Drift (Note 8) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note 10) IB ∆ IB Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note 10) – 35 IOS ∆IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain VS = 5V, VO = 0.5V to 4.5V, RL = 1k to VS/2 VS = 5V, VO = 1V to 4V, RL = 100Ω to VS/2 VS = 3V, VO = 0.5V to 2.5V, RL = 1k to VS/2 VS = 5V, VCM = V – to V + VS = 3V, VCM = V – to V + VS = 5V, VCM = V – to V + VS = 3V, VCM = V – to V + VS = 2.5V to 10V, VCM = 0V VS = 2.5V to 10V, VCM = 0V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA V S = 5V V S = 3V VS = 5V, VSHDN = 0.3V VS = 3V, VSHDN = 0.3V 17 2.5 10 63 58 57 52 V– 69 63 60 7 35 80 75 78 72 V+ 83 83 2.3 18 60 210 55 120 375 2.5 70 150 450 130 240 750 CMRR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 10) Input Common Mode Range V dB dB V mV mV mV mV mV mV mA mA PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 10) Minimum Supply Voltage (Note 6) q q q q q q q q q q q q q q VOL Output Voltage Swing LOW (Note 7) VOH Output Voltage Swing HIGH (Note 7) ISC IS Short-Circuit Current Supply Current per Amplifier Supply Current, Shutdown ± 30 ± 25 ± 70 ± 60 15 0.58 0.35 21 1.5 1.2 mA mA mA 5 LT1809/LT1810 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER ISHDN SHDN Pin Current Output Leakage Current, Shutdown VL VH tON tOFF GBW SR FPBW SHDN Pin Input Voltage Low SHDN Pin Input Voltage High Turn-On Time Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth The q denotes the specifications which apply over the – 40°C ≤ TA ≤ 85°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply, unless otherwise noted. (Note 5) CONDITIONS VS = 5V, VSHDN = 0.3V VS = 3V, VSHDN = 0.3V VSHDN = 0.3V q q q q q VS – 0.5 MIN TYP 420 220 3 MAX 900 600 0.3 UNITS µA µA µA V V ns ns MHz V/µs MHz VSHDN = 0.3V to 4.5V, RL = 100 VSHDN = 4.5V to 0.3V, RL = 100 Frequency = 2MHz VS = 5V, AV = -1, RL = 1k, VO = 4VP-P VS = 5V, VOUT = 4VP-P q q q q q 80 50 140 180 14 TA = 25°C. VS = ± 5V, VSHDN = open, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS VCM = V + LT1809 SO-8 VCM = V – LT1809 SO-8 VCM = V + VCM = V – VCM = V – to V + LT1809 SO-8 VCM = V – to V + VCM = V +, VCM = V – VCM = V + VCM = V – + 0.2V VCM = V – + 0.2V to V + VCM = V+ VCM = V – + 0.2V VCM = V+ VCM = V – + 0.2V VCM = V – + 0.2V to V + f = 10kHz f = 10kHz f = 100kHz VO = – 4V to 4V, RL = 1k VO = – 2.5V to 2.5V, RL = 100Ω VCM = V – to V + VCM = V – to V + V + = 2.5V to 10V, V – = 0V V + = 2.5V to 10V, V – = 0V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA 30 4.5 70 64 V– 71 65 87 90 12 50 180 35 90 310 60 140 425 100 200 700 MIN TYP 0.8 0.8 0.8 0.8 0.35 0.35 1 2 –12.5 14.5 0.1 0.4 0.05 0.40 0.45 16 5 2 100 12 89 89 V+ MAX 3.0 3.0 3.5 3.5 2.5 3.0 6 10 40 5 10 2 5 7 UNITS mV mV mV mV mV mV mV µA µA µA µA µA µA µA µA nV/√Hz pA/√Hz pF V/mV V/mV dB dB V dB dB mV mV mV mV mV mV ∆VOS Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note 10) IB ∆IB Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note 10) – 30 IOS ∆IOS en in CIN AVOL CMRR Input Offset Current Input Offset Current Shift Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 10) Input Common Mode Range PSRR VOL Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 10) Output Voltage Swing LOW (Note 7) VOH Output Voltage Swing HIGH (Note 7) 6 LT1809/LT1810 ELECTRICAL CHARACTERISTICS TA = 25°C. VS = ± 5V, VSHDN = open, VCM = 0V, VOUT = 0, unless otherwise noted. SYMBOL PARAMETER ISC IS ISHDN VL VH tON tOFF GBW SR FPBW THD tS ∆G ∆θ Short-Circuit Current Supply Current per Amplifier Supply Current, Shutdown SHDN Pin Current Output Leakage Current, Shutdown SHDN Pin Input Voltage Low SHDN Pin Input Voltage High Turn-On Time Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth Total Harmonic Distortion Settling Time Differential Gain (NTSC) Differential Phase (NTSC) VSHDN = 0.3V to 4.5V, RL = 100 VSHDN = 4.5V to 0.3V, RL = 100 Frequency = 2MHz AV = – 1, RL = 1k, VO = ± 4V, Measured at VO = ± 3V VOUT = 8VP-P AV = 1, RL = 1k, VO = 2VP-P, fC = 5MHz 0.1%, VSTEP = 8V, AV = – 1, RL = 500Ω AV = 2, RL = 150Ω AV = 2, RL = 150Ω 110 175 V+ – 0.5 80 50 180 350 14 – 90 34 0.01 0.01 VSHDN = 0.3V VSHDN = 0.3V VSHDN = 0.3V CONDITIONS MIN ± 55 TYP ± 85 15 0.6 420 0.1 20 1.3 750 75 0.3 MAX UNITS mA mA mA µA µA V V ns ns MHz V/µs MHz dB ns % Deg The q denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = ± 5V, VSHDN = open, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS VCM = V + LT1809 SO-8 VCM = V – LT1809 SO-8 VCM = V + VCM = V – VCM = V + VCM = V – VCM = V – to V + LT1809 SO-8 VCM = V – to V + VCM = V – to V + VCM = V + – 0.2V VCM = V – + 0.4V VCM = V – + 0.4V to V + – 0.2V VCM VCM = V – + 0.4V VCM = V + – 0.2V VCM = V – + 0.4V VCM = V – + 0.4V to V + – 0.2V VO = – 4V to 4V, RL = 1k VO = – 2.5V to 2.5V, RL = 100Ω VCM = V – to V + VCM = V – to V + = V + – 0.2V q q q q q q q q q q q q q q q q q q q q q q MIN TYP 1 1 1 1 10 10 0.5 0.5 1.2 2.5 –15 17.5 0.1 0.5 0.06 0.5 0.56 MAX 3.25 3.25 3.75 3.75 25 25 2.75 3.25 6.5 12.5 50 6 12 2.25 6 8.25 UNITS mV mV mV mV µV/°C µV/°C mV mV mV µA µA µA µA µA µA µA µA V/mV V/mV dB dB VOS TC ∆VOS Input Offset Voltage Drift (Note 8) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note 10) IB ∆IB Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note 10) – 37.5 IOS ∆IOS AVOL CMRR Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 10) Input Common Mode Range 27 3.5 69 63 V– 80 10 86 86 V+ V 7 LT1809/LT1810 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER PSRR VOL Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 10) Output Voltage Swing LOW (Note 7) The q denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = ± 5V, VSHDN = open, VCM = 0V, VOUT = 0V, unless otherwise noted. CONDITIONS V + = 2.5V to 10V, V – No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA = 0V q q q q q q q q q q MIN 70 64 TYP 83 83 20 50 210 60 120 370 MAX UNITS dB dB V + = 2.5V to 10V, V – = 0V 80 160 475 140 240 750 25 1.5 850 0.3 mV mV mV mV mV mV mA mA mA µA µA V V ns ns MHz V/µs MHz VOH Output Voltage Swing HIGH (Note 7) ISC IS ISHDN VL VH tON tOFF GBW SR FPBW Short-Circuit Current Supply Current per Amplifier Supply Current, Shutdown SHDN Pin Current Output Leakage Current, Shutdown SHDN Pin Input Voltage Low SHDN Pin Input Voltage High Turn-On Time Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth VSHDN = 0.3V to 4.5V, RL = 100 VSHDN = 4.5V to 0.3V, RL = 100 Frequency = 2MHz AV = – 1, RL = 1k, VO = ± 4V, Measured at VO = ± 3V VOUT = 8VP-P VSHDN= 0.3V VSHDN = 0.3V VSHDN = 0.3V ± 45 ± 75 17.5 0.6 420 3 q q q q q q q q q q V+ – 0.5 80 50 85 140 170 300 12 The q denotes the specifications which apply over the – 40°C ≤ TA ≤ 85°C temperature range. VS = ± 5V, VSHDN = open, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 5) SYMBOL PARAMETER VOS Input Offset Voltage CONDITIONS VCM LT1809 SO-8 VCM = V – LT1809 SO-8 VCM = V + VCM = V – VCM = V + VCM = V – VCM = V – to V + LT1809 SO-8 VCM = V – to V + VCM = V – to V + VCM = V + – 0.2V VCM = V – + 0.4V VCM = V – + 0.4V to V + – 0.2V VCM = V + – 0.2V VCM = V – + 0.4V VCM = V + – 0.2V VCM = V – + 0.4V VCM = V – + 0.4V to V + – 0.2V VO = – 4V to 4V, RL = 1k VO = – 2.5V to 2.5V, RL = 100Ω = V+ q q q q q q q q q q q q q q q q q q q MIN TYP 1 1 1 1 10 10 0.5 0.5 1.2 2.8 –17 19.8 0.1 0.6 0.08 0.6 0.68 MAX 3.75 3.75 4.25 4.25 25 25 3.00 3.75 7.5 14 59 7 14 2.5 8 10.5 UNITS mV mV mV mV µV/°C µV/°C mV mV mV µA µA µA µA µA µA µA µA V/mV V/mV VOS TC ∆VOS Input Offset Voltage Drift (Note 8) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note 10) IB ∆ IB Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note 10) – 45 IOS ∆IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain 22 3 70 10 8 LT1809/LT1810 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CMRR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 10) Input Common Mode Range PSRR VOL Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 10) Output Voltage Swing LOW (Note 7) The q denotes the specifications which apply over the – 40°C ≤ TA ≤ 85°C temperature range. VS = ± 5V, VSHDN = open, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 5) CONDITIONS VCM VCM = V– = V– to V + to V + q q q MIN 68 62 V– 69 63 TYP 86 86 MAX UNITS dB dB V+ 83 83 23 60 220 75 130 375 100 170 525 160 260 775 25 1.6 900 0.3 V dB dB mV mV mV mV mV mV mA mA mA µA µA V V ns ns MHz V/µs MHz V + = 2.5V to 10V, V – = 0V V + = 2.5V to 10V, V – = 0V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA q q q q q q q q q q VOH Output Voltage Swing HIGH (Note 7) ISC IS ISHDN VL VH tON tOFF GBW SR FPBW Short-Circuit Current Supply Current per Amplifier Supply Current, Shutdown SHDN Pin Current Output Leakage Current, Shutdown SHDN Pin Input Voltage Low SHDN Pin Input Voltage High Turn-On Time Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth VSHDN = 0.3V to 4.5V, RL = 100 VSHDN = 4.5V to 0.3V, RL = 100 Frequency = 2MHz AV = – 1, RL = 1k, VO = ± 4V, Measured at VO = ± 3V VOUT = 8VP-P VSHDN = 0.3V VSHDN = 0.3V VSHDN = 0.3V ± 30 ± 75 19 0.65 420 4 q q q q q q q q q q V+ – 0.5 80 50 80 110 160 220 8.5 Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The inputs are protected by back-to-back diodes. If the differential input voltage exceeds 1.4V, the input current should be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below the absolute maximum rating when the output is shorted indefinitely. Note 4: The LT1809C/LT1809I and LT1810C/LT1810I are guaranteed functional over the operating temperature range of – 40°C and 85°C. Note 5: The LT1809C/LT1810C are guaranteed to meet specified performance from 0°C to 70°C. The LT1809C/LT1810C are designed, characterized and expected to meet specified performance from – 40°C to 85°C but are not tested or QA sampled at these temperatures. The LT1809I/LT1810I are guaranteed to meet specified performance from – 40°C to 85°C. Note 6: Minimum supply voltage is guaranteed by power supply rejection ratio test. Note 7: Output voltage swings are measured between the output and power supply rails. Note 8: This parameter is not 100% tested. Note 9: Thermal resistance varies depending upon the amount of PC board metal attached to the V – pin of the device. θJA is specified for a certain amount of 2oz of copper metal trace connecting to the V – pin as described in the thermal resistance tables in the Applications Information section. Note 10: Matching parameters are the difference between the two amplifiers of the LT1810. 9 LT1809/LT1810 TYPICAL PERFOR A CE CHARACTERISTICS VOS Distribution, VCM = 0V (PNP Stage) 50 VS = 5V, 0V 40 PERCENT OF UNITS (%) PERCENT OF UNITS (%) 40 PERCENT OF UNITS (%) 50 VS = 5V, 0V 20 30 20 10 0 –3 2 –1 0 1 –2 INPUT OFFSET VOLTAGE (mV) Supply Current vs Supply Voltage 25 INPUT BIAS CURRENT (µA) 20 SUPPLY CURRENT (mA) OFFSET VOLTAGE (mV) TA = 125°C TA = 25°C 15 10 TA = – 55°C 5 0 0 1 2345678 TOTAL SUPPLY VOLTAGE (V) Input Bias Current vs Temperature 5 3 INPUT BIAS CURRENT (µA) OUTPUT LOW SATURATION VOLTAGE (V) 1 –1 –3 –5 –7 –9 –11 –13 VCM = 5V 1 OUTPUT HIGH SATURATION VOLTAGE (V) VS = 5V, 0V VCM = 0V –15 –50 –35 –20 –5 10 25 40 55 TEMPERATURE (°C) 10 UW 3 1809 G01 VOS Distribution, VCM = 5V (NPN Stage) 25 ∆VOS Shift for VCM = 0V to 5V VS = 5V, 0V 30 15 20 10 10 5 0 –3 2 –1 0 1 –2 INPUT OFFSET VOLTAGE (mV) 3 1809 G02 0 –1 –0.75 –0.5 –0.25 0 0.25 0.5 0.75 INPUT OFFSET VOLTAGE (mV) 1 1809 G03 Offset Voltage vs Input Common Mode 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 TA = 25°C TA = 125°C VS = 5V, 0V TYPICAL PART 10 5 0 –5 –10 –15 –20 –25 0 4 INPUT COMMON MODE VOLTAGE (V) 1 2 3 5 Input Bias Current vs Common Mode Voltage VS = 5V, 0V TA = 25°C TA = 125°C TA = – 55°C TA = – 55°C TA = 25°C TA = 125°C TA = – 55°C 9 10 –30 –1 0 4 5 1 3 2 COMMON MODE VOLTAGE (V) 6 1809 G06 1809 G04 1809 G05 Output Saturation Voltage vs Load Current (Output Low) 10 VS = 5V, 0V 10 Output Saturation Voltage vs Load Current (Output High) VS = 5V, 0V 1 0.1 TA = 125°C 0.01 TA = – 55°C TA = 25°C 0.1 TA = 125°C TA = 25°C 0.01 TA = – 55°C 70 85 0.001 0.01 0.1 1 10 LOAD CURRENT (mA) 100 1809 G08 0.001 0.01 0.1 1 10 LOAD CURRENT (mA) 100 1809 G09 1809 G07 LT1809/LT1810 TYPICAL PERFOR A CE CHARACTERISTICS Minimum Supply Voltage 1.0 OUTPUT SHORT-CIRCUIT CURRENT (mA) CHANGE IN OFFSET VOLTAGE (mV) 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 VCM = V– + 0.5V 60 40 20 0 –20 –40 –60 –80 1.5 “SINKING” SUPPLY CURRENT (mA) TA = – 55°C TA = 125°C TA = 25°C 1.5 2.0 2.5 3.0 3.5 4.0 4.5 TOTAL SUPPLY VOLTAGE (V) SHDN Pin Current vs SHDN Pin Voltage 50 0 VS = 5V, 0V SHDN PIN CURRENT (µA) –50 INPUT VOLTAGE (mV) –100 –150 –200 –250 –300 –350 –400 –450 0 1 TA = 125°C TA = – 55°C TA = 25°C 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 –2.5 RL = 100Ω RL = 1k INPUT VOLTAGE (mV) 3 4 2 SHDN PIN VOLTAGE (V) Open-Loop Gain 2.5 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 –2.5 –5 –4 –3 –2 –1 0 1 2 3 OUTPUT VOLTAGE (V) 4 5 RL = 100Ω RL = 1k OFFSET VOLTAGE (mV) CHANGE IN OFFSET VOLTAGE (µV) INPUT VOLTAGE (mV) UW 1809 G10 Output Short-Circuit Current vs Power Supply Voltage 120 100 80 TA = 125°C TA = – 55°C TA = 25°C Supply Current vs SHDN Pin Voltage 18 16 14 12 10 8 6 4 2 5.0 VS = 5V, 0V TA = 125°C TA = 25°C “SOURCING” TA = – 55°C TA = 25°C 4.0 4.5 2.0 2.5 3.0 3.5 POWER SUPPLY VOLTAGE (± V) TA = 125°C TA = – 55°C 5.0 –100 0 0 1 4 3 2 SHDN PIN VOLTAGE (V) 1809 G12 5 1809 G11 Open-Loop Gain 2.5 2.0 1.5 VS = 3V, 0V 2.5 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 –2.5 0 0.5 1.5 2.0 1.0 OUTPUT VOLTAGE (V) 2.5 3.0 1809 G14 Open-Loop Gain VS = 5V, 0V RL = 1k RL = 100Ω 5 1809 G13 0 1 3 2 OUTPUT VOLTAGE (V) 4 5 1809 G15 Offset Voltage vs Output Current VS = ± 5V 15 10 5 0 TA = – 55°C –5 –10 –15 –100 –80 –60 –40 –20 0 20 40 60 80 100 OUTPUT CURRENT (mA) 1809 G17 Warm-Up Drift vs Time (LT1809S8) 180 160 140 120 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 TIME AFTER POWER UP (SEC) 1809 G18 VS = ± 5V TA = 25°C VS = ± 5V TA = 25°C TA = 125°C VS = 5V, 0V VS = 3V, 0V 1809 G16 11 LT1809/LT1810 TYPICAL PERFOR A CE CHARACTERISTICS Input Noise Voltage vs Frequency 100 90 NOISE VOLTAGE (nV/√Hz) VS = 5V, 0V 70 60 50 40 30 20 10 0 0.1 PNP ACTIVE VCM = 2.5V NPN ACTIVE VCM = 4.5V OUTPUT VOLTAGE (µV/DIV) 100 1809 G20 CURRENT NOISE (pA/√Hz) 80 1 10 FREQUENCY (kHz) Gain Bandwidth and Phase Margin vs Supply Voltage TA = 25°C RL = 1k 55 50 PHASE MARGIN 190 185 180 175 170 165 160 0 2 6 8 4 TOTAL SUPPLY VOLTAGE (V) 10 1809 G23 GAIN BANDWIDTH (MHz) GAIN BANDWIDTH (MHz) 35 VS = 3V, 0V 200 190 180 170 160 150 –55 –25 VS = 3V, 0V GAIN BANDWIDTH 50 25 0 75 TEMPERATURE (°C) 100 VS = ± 5V SLEW RATE (V/µs) GAIN BANDWIDTH Gain and Phase vs Frequency 60 50 40 VS = 3V, 0V PHASE VS = ± 5V 100 80 60 GAIN (dB) GAIN (dB) VS = ± 5V VS = 3V, 0V GAIN (dB) 30 20 10 GAIN 0 –10 CL = 5pF RL = 1k 1M 10M 100M FREQUENCY (Hz) 1G 1809 G22 –20 100k 12 UW 1809 G19 Input Noise Current vs Frequency 20 VS = 5V, 0V 10 8 16 6 4 2 0 –2 –4 –6 –8 –10 0.1Hz to 10Hz Output Voltage Noise 12 8 PNP ACTIVE VCM = 2.5V NPN ACTIVE VCM = 4.5V 4 0 100 0.1 1 10 FREQUENCY (kHz) TIME (2 SEC/DIV) 1809 G21 Gain Bandwidth and Phase Margin vs Temperature 55 PHASE MARGIN VS = ± 5V 50 45 350 300 250 200 150 100 125 450 400 Slew Rate vs Temperature 45 VS = ± 5V VS = 5V, 0V PHASE MARGIN (DEG) PHASE (DEG) PHASE MARGIN (DEG) 40 40 35 30 50 – 55 – 25 AV = 1 RF = RG = 1k RL = 1k RISING AND FALLING SLEW RATE 0 75 50 25 TEMPERATURE (°C) 100 125 1809 G24 1809 G25 Closed-Loop Gain vs Frequency 15 12 9 6 3 0 –3 –6 –20 –40 –60 Closed-Loop Gain vs Frequency 15 12 9 AV = +2 AV = +1 40 20 0 VS = 3V VS = ±5V 6 3 0 –3 –6 –9 –12 VS = 3V VS = ± 5V –9 –12 –15 100k 1M 10M FREQUENCY (Hz) 100M 500M 1809 G26 –15 100k 1M 10M FREQUENCY (Hz) 100M 500M 1809 G27 LT1809/LT1810 TYPICAL PERFOR A CE CHARACTERISTICS Output Impedance vs Frequency 600 110 COMMON MODE REJECTION RATIO (dB) POWER SUPPLY REJECTION RATIO (dB) VS = 5V, 0V 100 OUTPUT IMPEDANCE (Ω) 10 AV = 10 1 AV = 2 AV = 1 0.1 0.01 100k 1M 10M FREQUENCY (Hz) Series Output Resistor vs Capacitive Load 40 35 30 OVERSHOOT (%) 25 20 15 10 5 0 10 100 CAPACITIVE LOAD (pF) 1000 1809 G32 VS = 5V, 0V AV = + 1 OVERSHOOT (%) RS = 10Ω, RL = ∞ RS = 20Ω, RL = ∞ RL = RS = 50Ω Distortion vs Frequency –40 –50 –60 –70 –80 –90 –100 –110 0.3 RL = 100Ω, 2ND AV = +1 VO = 2VP-P VS = ± 5V DISTORTION (dB) DISTORTION (dB) DISTORTION (dB) RL = 100Ω, 3RD RL = 1k, 3RD RL = 1k, 2ND 1 FREQUENCY (MHz) 10 UW 100M 1809 G28 1809 G35 Common Mode Rejection Ratio vs Frequency 100 90 80 70 60 50 40 30 20 10 10k 100k 1M 10M FREQUENCY (Hz) 100M 500M 1809 G30 Power Supply Rejection Ratio vs Frequency 100 90 80 70 60 50 40 30 20 10 0 1k 10k 100k 1M FREQUENCY (Hz) 10M 100M 1809 G31 VS = 5V, 0V VS = 5V, 0V TA = 25°C POSITIVE SUPPLY NEGATIVE SUPPLY 500M Series Output Resistor vs Capacitive Load 50 VS = 5V, 0V 45 AV = + 2 40 35 30 25 20 15 10 5 0 10 100 CAPACITIVE LOAD (pF) 1000 1809 G33 0.01% Settling Time INPUT SIGNAL GENERATION (2V/DIV) RS = 10Ω RL = ∞ RS = 20Ω RL = ∞ OUTPUT SETTLING RESOLUTION (2mV/DIV) RL = RS = 50Ω 20ns/DIV VS = ± 5V VOUT = ± 4V AV = – 1 RL = 500Ω tS = 110ns (SETTLING TIME) 1809 G34 Distortion vs Frequency –40 –50 –60 –70 –80 –90 –100 –110 0.3 RL = 1k, 2ND RL = 100Ω, 2ND AV = +1 VO = 2VP-P VS = 5V –40 –50 –60 Distortion vs Frequency AV = +2 VO = 2VP-P VS = ± 5V RL = 100Ω, 2ND –70 –80 –90 RL = 1k, 2ND RL = 100Ω, 3RD RL = 1k, 3RD RL = 100Ω, 3RD RL = 1k, 3RD –100 –110 0.3 30 1 FREQUENCY (MHz) 10 30 1809 G36 1 FREQUENCY (MHz) 10 30 1809 G37 13 LT1809/LT1810 TYPICAL PERFOR A CE CHARACTERISTICS Distortion vs Frequency –40 –50 –60 –70 –80 RL = 1k, 2ND –90 –100 –110 0.3 RL = 100Ω, 3RD RL = 1k, 3RD AV = +2 VO = 2VP-P VS = 5V RL = 100Ω, 2ND 4.6 OUTPUT VOLTAGE SWING (VP-P) DISTORTION (dB) ± 5V Large-Signal Response VS = ± 5V AV = + 1 RL = 1k 10ns/DIV 5V Small-Signal Response V S = 5V AV = + 1 RL = 1k 10ns/DIV 14 UW 1 Maximum Undistorted Output Signal vs Frequency VS = 5V AV = –1 4.5 4.4 4.3 4.2 4.1 4.0 3.9 0.1 AV = + 2 10 FREQUENCY (MHz) 30 1809 G38 1 10 FREQUENCY (MHz) 100 1809 G39 ± 5V Small-Signal Response 5V Large-Signal Response 1809 G40 VS = ± 5V AV = + 1 RL = 1k 10ns/DIV 1809 G41 V S = 5V AV = + 1 RL = 1k 10ns/DIV 1809 G42 Output Overdriven Recovery Shutdown Response VIN (1V/DIV) 0V 0V VSHDN 0V VOUT 0V VOUT (2V/DIV) 1809 G43 VS = 5V, 0V AV = + 2 100ns/DIV 1809 G44 VS = 5V, 0V AV = + 2 RL = 100Ω 100ns/DIV 1809 G44 LT1809/LT1810 APPLICATIO S I FOR ATIO Rail-to-Rail Characteristics The LT1809/LT1810 have an input and output signal range that includes both negative and positive power supply. Figure 1 depicts a simplified schematic of the amplifier. The input stage is comprised of two differential amplifiers, a PNP stage Q1/Q2 and a NPN stage Q3/Q4 that are active over different ranges of common mode input voltage. The PNP differential pair is active for common mode voltages between the negative supply to approximately 1.5V below the positive supply. As the input voltage moves closer toward the positive supply, the transistor Q5 will steer the tail current I1 to the current mirror Q6/Q7, activating the NPN differential pair and causing the PNP pair to become inactive for the rest of the input common mode range up to the positive supply. A pair of complementary common emitter stages Q14/Q15 form the output stage, enabling the output to swing from rail-to-rail. The capacitors C1 and C2 form the local feedback loops that lower the output impedance at high frequency. These devices are fabricated on Linear Technology’s proprietary high speed complementary bipolar process. V+ R6 10k V+ ESDD5 D9 SHDN ESDD6 V– D5 –IN ESDD4 V– V+ ESDD3 D7 Q4 Q3 Q1 Q2 D3 Q10 D4 Q9 Q8 C1 Q7 Q6 R1 V– R2 1809 F01 Q16 Q17 V+ V– ESDD2 D1 I1 Q11 Q12 Q13 C2 Q15 R7 100k ESDD1 +IN D6 D8 BIAS GENERATION Figure 1. LT1809 Simplified Schematic Diagram U Power Dissipation The LT1809/LT1810 amplifiers combine high speed with large output current in a small package, so there is a need to ensure that the die’s junction temperature does not exceed 150°C. The LT1809 is housed in an SO-8 package or a 6-lead SOT-23 package and the LT1810 is in an SO-8 or 8-lead MSOP package. All packages have the V – supply pin fused to the lead frame to enhance the thermal conductance when connecting to a ground plane or a large metal trace. Metal trace and plated through-holes can be used to spread the heat generated by the device to the backside of the PC board. For example, on a 3/32" FR-4 board with 2oz copper, a total of 660 square millimeters connected to Pin 4 of LT1810 in an SO-8 package (330 square millimeters on each side of the PC board) will bring the thermal resistance, θJA, to about 85°C/W. Without extra metal trace connected to the V – pin to provide a heat sink, the thermal resistance will be around 105°C/W. More information on thermal resistance for all packages with various metal areas connecting to the V – pin is provided in Tables 1, 2 and 3 for thermal consideration. R3 R4 R5 D2 Q5 VBIAS CC V– I2 OUT BUFFER AND OUTPUT BIAS Q14 W UU 15 LT1809/LT1810 APPLICATIO S I FOR ATIO Table 1. LT1809 6-Lead SOT-23 Package COPPER AREA TOPSIDE (mm2) 270 100 20 0 BOARD AREA (mm2) 2500 2500 2500 2500 THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 135°C/W 145°C/W 160°C/W 200°C/W Device is mounted on topside. Table 2. LT1809/LT1810 SO-8 Package COPPER AREA TOPSIDE BACKSIDE (mm2) (mm2) 1100 330 35 35 0 1100 330 35 0 0 BOARD AREA (mm2) 2500 2500 2500 2500 2500 THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 65°C/W 85°C/W 95°C/W 100°C/W 105°C/W Device is mounted on topside. Table 3. LT1810 8-Lead MSOP Package COPPER AREA TOPSIDE BACKSIDE (mm2) (mm2) 540 100 100 30 0 540 100 0 0 0 BOARD AREA THERMAL RESISTANCE (mm2) (JUNCTION-TO-AMBIENT) 2500 2500 2500 2500 2500 110°C/W 120°C/W 130°C/W 135°C/W 140°C/W Device is mounted on topside. Junction temperature TJ is calculated from the ambient temperature TA and power dissipation PD as follows: TJ = TA + (PD • θJA) The power dissipation in the IC is the function of the supply voltage, output voltage and the load resistance. For a given supply voltage, the worst-case power dissipation PD(MAX) occurs at the maximum supply current with the output voltage at half of either supply voltage (or the maximum swing is less than 1/2 the supply voltage). PD(MAX) is given by: PD(MAX) = (VS • IS(MAX)) + (VS/2)2/RL Example: An LT1810 in SO-8 mounted on a 2500mm 2 area of PC board without any extra heat spreading plane 16 U connected to its V – pin has a thermal resistance of 105°C/W, θJA. Operating on ± 5V supplies with both amplifiers simultaneously driving 50Ω loads, the worstcase power dissipation is given by: PD(MAX) = 2 • (10 • 25mA) + 2 • (2.5)2/50 = 0.5 + 0.250 = 0.750W The maximum ambient temperature that the part is allowed to operate is: TA = TJ – (PD(MAX) • 105°C/W) = 150°C – (0.750W • 105°C/W) = 71°C To operate the device at higher ambient temperature, connect more metal area to the V – pin to reduce the thermal resistance of the package as indicated in Table 2. Input Offset Voltage The offset voltage will change depending upon which input stage is active and the maximum offset voltage is guaranteed to be less than 3mV. The change of VOS over the entire input common mode range (CMRR) is less than 2.5mV on a single 5V and 3V supply. Input Bias Current The input bias current polarity depends upon a given input common voltage at whichever input stage is operating. When the PNP input stage is active, the input bias currents flow out of the input pins and flow into the input pins when the NPN input stage is activated. Because the input offset current is less than the input bias current, matching the source resistances at the input pin will reduce total offset error. Output The LT1809/LT1810 can deliver a large output current, so the short-circuit current limit is set around 90mA to prevent damage to the device. Attention must be paid to keep the junction temperature of the IC below the absolute maximum rating of 150°C (refer to the Power Dissipation section) when the output is continuously short circuited. The output of the amplifier has reverse-biased diodes connected to each supply. If the output is forced W UU LT1809/LT1810 APPLICATIO S I FOR ATIO beyond either supply, unlimited current will flow through these diodes. If the current is transient and limited to several hundred milliamps, no damage to the device will occur. Overdrive Protection When the input voltage exceeds the power supplies, two pairs of crossing diodes, D1 to D4, will prevent the output from reversing polarity. If the input voltage exceeds either power supply by 700mV, diodes D1/D2 or D3/D4 will turn on, keeping the output at the proper polarity. For the phase reversal protection to perform properly, the input current must be limited to less than 5mA. If the amplifier is severely overdriven, an external resistor should be used to limit the overdrive current. The LT1809/LT1810’s input stages are also protected against differential input voltages of 1.4V or higher by back-to-back diodes, D5/D8, that prevent the emitter-base breakdown of the input transistors. The current in these diodes should be limited to less than 10mA when they are active. The worst-case differential input voltage usually occurs when the input is driven while the output is shorted to ground in a unity-gain configuration. In addition, the amplifier is protected against ESD strikes up to 3kV on all pins by a pair of protection diodes on each pin that are connected to the power supplies as shown in Figure 1. Capacitive Load The LT1809/LT1810 is optimized for high bandwidth and low distortion applications. It can drive a capacitive load about 20pF in a unity-gain configuration and more with higher gain. When driving a larger capacitive load, a resistor of 10Ω to 50Ω should be connected between the U output and the capacitive load to avoid ringing or oscillation. The feedback should still be taken from the output so that the resistor will isolate the capacitive load to ensure stability. Graphs on capacitive loads indicate the transient response of the amplifier when driving capacitive load with a specified series resistor. Feedback Components When feedback resistors are used to set up gain, care must be taken to ensure that the pole formed by the feedback resistors and the total capacitance at the inverting input does not degrade stability. For instance, the LT1809 in a noninverting gain of 2, set up with two 1K resistors and a capacitance of 3pF (device plus PC board), will probably ring in transient response. The pole that is formed at 106MHz will reduce phase margin by 34 degrees when the crossover frequency of the amplifier is around 70MHz. A capacitor of 3pF or higher connected across the feedback resistor will eliminate any ringing or oscillation. SHDN Pin The LT1809 has a SHDN pin to reduce the supply current to less than 1.25mA. When the SHDN pin is pulled low, it will generate a signal to power down the device. If the pin is left unconnected, an internal pull-up resistor of 10k will keep the part fully operating as shown in Figure 1. The output will be high impedance during shutdown, and the turn-on and turn-off time is less than 100ns. Because the inputs are protected by a pair of back-to-back diodes, the input signal will feed through to the output during shutdown mode if the amplitude of signal between the inputs is larger than 1.4V. W UU 17 LT1809/LT1810 TYPICAL APPLICATIO S Driving A/D Converters The LT1809/LT1810 have a 27ns settling time to 0.1% of a 2V step signal and 20Ω output impedance at 100MHz making it ideal for driving high speed A/D converters. With the rail-to-rail input and output and low supply voltage operation, the LT1809 is also desirable for single supply applications. As shown in Figure 2, the LT1809 drives a 10Msps, 12-bit ADC, the LTC1420. The lowpass filter, R3 and C1, reduces the noise and distortion products that might come from the input signal. High quality capacitors and resistors, an NPO chip capacitor and metal-film surface mount resistors, should be used since these components can add to distortion. The voltage glitch of the converter, due to its sampling nature, is buffered by the LT1809 and the ability of the amplifier to settle it quickly will affect the spurious-free dynamic range of the system. Figure 2 to Figure 7 depict the LT1809 driving the LTC1420 at different configurations and voltage supplies. The FFT responses show better than 90dB of SFDR for a ± 5V supply, and 80dB on a 5V single supply for the 1.394MHz signal. 5V 5V VIN 1VP-P AMPLITUDE (dB) 18 U + LT1809 R3 49.9Ω +AIN C1 470pF –5V R2 1k –AIN – LTC1420 PGA GAIN = 1 REF = 2.048V • • • 12 BITS 10Msps 1809 F02 –5V R1 1k Figure 2. Noninverting A/D Driver 0 –20 –40 –60 –80 VS = ± 5V AV = + 2 fSAMPLE = 10Msps fIN = 1.394MHz SFDR = 90dB –100 –120 0 1 2 3 FREQUENCY (MHz) 4 5 1809 F03 Figure 3. 4096 Point FFT Response LT1809/LT1810 TYPICAL APPLICATIO S 0 –20 VS = ± 5V AV = – 1 fSAMPLE = 10Msps fIN = 1.394MHz SFDR = 90dB 1k 5V 5V VIN 2VP-P 1k AMPLITUDE (dB) • • • 12 BITS 10Msps 1809 F04 – LT1809 49.9Ω +AIN 470pF –5V –AIN + Figure 4. Inverting A/D Driver 5V VIN 1VP-P ON 2.5V DC 3 + – 7 LT1809 6 1 4 1k 470pF 49.9Ω 1 +AIN 2 –AIN LTC1420 PGA GAIN = 2 REF = 4.096V VCM 3 1µF 1809 F06 AMPLITUDE (dB) 2 1k 0.15µF Figure 6. Single Supply A/D Driver U –40 –60 –80 LTC1420 PGA GAIN = 1 REF = 2.048V –100 –120 0 1 2 3 FREQUENCY (MHz) 4 5 1809 F05 –5V Figure 5. 4096 Point FFT Response 0 –20 5V –40 –60 –80 VS = 5V AV = + 2 fSAMPLE = 10Msps fIN = 1.394MHz SFDR = 80dB • • • 12 BITS 10Msps –100 –120 0 1 2 3 FREQUENCY (MHz) 4 5 1809 F07 Figure 7. 4096 Point FFT Response 19 LT1809/LT1810 TYPICAL APPLICATIO S Single Supply Video Line Driver The LT1809 is a wideband rail-to-rail op amp with a large output current that allows it to drive video signals in low supply applications. Figure 8 depicts a single supply video line driver with AC coupling to minimize the quiescent power dissipation. Resistors R1 and R2 are used to levelshift the input and output to provide the largest signal swing. A gain of 2 is set up with R3 and R4 to restore the signal at VOUT, which is attenuated by 6dB due to the matching of the 75 Ω line with the back-terminated resistor, R5. The back termination will eliminate any reflection of the signal that comes from the load. The input termination resistor, RT, is optional—it is used only if matching of the incoming line is necessary. The values of C1, C2 and C3 are selected to minimize the droop of the luminance signal. In some less stringent requirements, the value of capacitors could be reduced. The – 3dB bandwidth of the driver is about 95MHz on 5V supply and the amount of peaking will vary upon the value of capacitor C4. C1 33µF VIN RT 75Ω 2 + VOLTAGE GAIN (dB) 20 U 5V R1 5k R2 5k 3 + – 7 LT1809 4 R4 1k C4 3pF 6 C3 1000µF R5 75Ω 75Ω COAX CABLE VOUT RLOAD 75Ω 1809 F08 + R3 1k + C2 150µF Figure 8. 5V Single Supply Video Line Driver 5 4 3 2 1 0 –1 –2 –3 –4 VS = 5V –5 0.2 1 10 FREQUENCY (MHz) 100 1809 F09 Figure 9. Video Line Driver Frequency Response LT1809/LT1810 PACKAGE DESCRIPTIO U Dimensions in inches (millimeters) unless otherwise noted. S6 Package 6-Lead Plastic SOT-23 (Reference LTC DWG # 05-08-1634) (Reference LTC DWG # 05-08-1636) 2.80 – 3.10 (.110 – .118) (NOTE 3) SOT-23 (Original) A A1 A2 L .90 – 1.45 (.035 – .057) .00 – 0.15 (.00 – .006) .90 – 1.30 (.035 – .051) .35 – .55 (.014 – .021) SOT-23 (ThinSOT) 1.00 MAX (.039 MAX) .01 – .10 (.0004 – .004) .80 – .90 (.031 – .035) .30 – .50 REF (.012 – .019 REF) 2.60 – 3.00 (.102 – .118) 1.50 – 1.75 (.059 – .069) (NOTE 3) PIN ONE ID .95 (.037) REF .25 – .50 (.010 – .020) (6PLCS, NOTE 2) .20 (.008) DATUM ‘A’ A A2 L NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS MILLIMETERS 2. DIMENSIONS ARE IN (INCHES) .09 – .20 (.004 – .008) (NOTE 2) 1.90 (.074) REF A1 S6 SOT-23 0401 3. DRAWING NOT TO SCALE 4. DIMENSIONS ARE INCLUSIVE OF PLATING 5. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 6. MOLD FLASH SHALL NOT EXCEED .254mm 7. PACKAGE EIAJ REFERENCE IS: SC-74A (EIAJ) FOR ORIGINAL JEDEC MO-193 FOR THIN 21 LT1809/LT1810 PACKAGE DESCRIPTIO U Dimensions in inches (millimeters) unless otherwise noted. MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 0.118 ± 0.004* (3.00 ± 0.102) 8 76 5 0.193 ± 0.006 (4.90 ± 0.15) 0.118 ± 0.004** (3.00 ± 0.102) 1 0.043 (1.10) MAX 0.007 (0.18) 0.021 ± 0.006 (0.53 ± 0.015) 0° – 6° TYP SEATING PLANE 23 4 0.034 (0.86) REF 0.009 – 0.015 (0.22 – 0.38) 0.0256 (0.65) BSC 0.005 ± 0.002 (0.13 ± 0.05) MSOP (MS8) 1100 * DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE 22 LT1809/LT1810 PACKAGE DESCRIPTIO U Dimensions in inches (millimeters) unless otherwise noted. S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 8 7 6 5 0.228 – 0.244 (5.791 – 6.197) 0.150 – 0.157** (3.810 – 3.988) 1 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0°– 8° TYP 2 3 4 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 0.014 – 0.019 (0.355 – 0.483) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 0.016 – 0.050 (0.406 – 1.270) 0.050 (1.270) BSC SO8 1298 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 23 LT1809/LT1810 TYPICAL APPLICATIO Single 3V Supply, 4MHz, 4th Order Butterworth Filter Benefiting from a low voltage supply operation, low distortion and rail-to-rail output of LT1809, a low distortion filter that is suitable for antialiasing can be built as 232Ω 47pF 274Ω 22pF 232Ω VIN 220pF 665Ω VS 2 Figure 10. Single 3V Supply, 4MHz, 4th Order Butterworth Filter 10 0 –10 –20 GAIN (dB) RELATED PARTS PART NUMBER LT1395 LT1632/LT1633 LT1630/LT1631 LT1806/LT1807 DESCRIPTION 400MHz Current Feedback Amplifier Dual/Quad 45MHz, 45V/µs Rail-to-Rail Input and Output Op Amps Dual/Quad 30MHz, 10V/µs Rail-to-Rail Input and Output Op Amps Single/Dual 325MHz, 140V/µs Rail-to-Rail Input and Output Op Amps COMMENTS 800V/µs Slew Rate, Shutdown High DC Accuracy, 1.35mV VOS(MAX), 70mA Output Current, Max Supply Current 5.2mA per Amplifier High DC Accuracy, 525µV VOS(MAX), 70mA Output Current, Max Supply Current 4.4mA per Amplifier High DC Accuracy, 550µV VOS(MAX), Low Noise 3.5nV/√Hz, Low Distortion –80dBc at 5MHz 24 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com U shown Figure 10. On a 3V supply, the filter has a passband of 4MHz with 2.5VP-P signal and a stopband that is greater than 70dB to frequency of 100MHz. – 1/2 LT1810 274Ω 562Ω 470pF – 1/2 LT1810 VOUT + + 1809 F10 –30 –40 –50 –60 –70 –80 –90 10k VS = 3V, 0V VIN = 2.5VP-P 100k 1M 10M FREQUENCY (Hz) 100M 1809 F11 Figure 11. Filter Frequency Response sn180910 180910fs LT/TP 1100 4K • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2000