A2C11637

ADA4691-2_V01 AD | Alldatasheet

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Low Power, 3.6 MHz, Low Noise, Rail-to- Rail Output, Operational Amplifiers Data Sheet ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 Rev. E Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Tel: 781.329.4700 ©2009–2019 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

FEATURES

Low power: 180 μA typical Very low input bias currents: 0.5 pA typical Low noise: 16 nV/√Hz typical

3.6 MHz bandwidth

Offset voltage: 500 μV typical Low offset voltage drift: 4 μV/°C maximum Low distortion: 0.003% THD + N 2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply Available in very small 2 mm × 2 mm LFCSP packages

APPLICATIONS

Portable medical and instrumentation Portable audio: MP3s, PDAs, and smartphones Communications Low-side current sense ADC drivers Active filters Sample-and-hold GENERAL DESCRIPTION The ADA4691-2/ADA4692-2 are dual and the ADA4691-4/ ADA4692-4 are the quad rail-to-rail output, single-supply amplifiers featuring low power, wide bandwidth, and low noise. The ADA4691-2 has two independent shutdown pins, allowing further reduction in supply current. The ADA4691-4 is a quad with dual shutdown pins each controlling a pair of amplifiers and is available in the 16-lead LFCSP . The ADA4692-4 is a quad version without shutdown. These amplifiers are ideal for a wide variety of applications. Audio, filters, photodiode amplifiers, and charge amplifiers, all benefit from this combination of performance and features. Additional applications for these amplifiers include portable consumer audio players with low noise and low distortion that provide high gain and slew rate response over the audio band at low power. Industrial applications with high impedance sensors, such as pyroelectric and IR sensors, benefit from the high impedance and low 0.5 pA input bias, low offset drift, and enough bandwidth and response for low gain applications. The ADA4691/ADA4692 family is fully specified over the extended industrial temperature range (−40°C to +125°C). The ADA4691-2 is available in a 10-lead LFCSP and a 9-ball WLCSP . The ADA4692-2 is available in an 8-lead SOIC and 8-lead LFCSP . The ADA4691-4 is available in a 16-lead LFCSP . The ADA4692-4 is available in a 14-lead TSSOP . For pin configurations, see the Pin Configurations section. 0.1 0.01 0.001 10 100 1k 10k 20k THD + N (%) FREQUENCY (Hz) ADA4692-2 VSY = ±2.5V AV = –1 TA = 25°C 07950-142 RL = 600Ω RL = 2kΩ Figure 1. THD + Noise vs. Frequency Figure 2. Channel Separation vs. Frequency

ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 Data Sheet Rev. E | Page 2 of 19 TABLE OF CONTENTS

REVISION HISTORY

12/2019—Rev. D to Rev. E 11/2010—Rev. C to Rev. D 12/2009—Rev. B to Rev. C Added Figure 1, Figure 2, and Table 1; Renumbered Changes to Applications Section and General Description 9/2009—Rev. A to Rev. B Added ADA4691-2, 9-Ball WLCSP; ADA4692-2, 8-Lead 6/2009—Rev. 0 to Rev. A Changes to Captions for Figure 40, Figure 41, Figure 43, and 3/2009—Revision 0: Initial Version

Data Sheet ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 Rev. E | Page 3 of 19 SPECIFICATIONS ELECTRICAL CHARACTERISTICS—2.7 V OPERATION Supply voltage (VSY) = 2.7 V, common-mode voltage (VCM) = VSY/2, TA = 25°C, unless otherwise specified. Table 2. Parameter Symbol Test Conditions/Comments Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage VOS VCM = −0.3 V to +1.6 V 0.5 2.5 mV Dual (ADA469x-2) VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C 3.5 mV Quad (ADA469x-4) VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C 4.0 mV Offset Voltage Drift ΔVOS/ΔT −40°C < TA < +125°C 1 4 µV/°C Input Bias Current IB 0.5 5 pA −40°C < TA < +125°C 360 pA Input Offset Current IOS 1 8 pA −40°C < TA < +125°C 225 pA Input Voltage Range −40°C < TA < +125°C −0.3 +1.6 V Common-Mode Rejection Ratio CMRR VCM = −0.3 V to +1.6 V 70 90 dB VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C 62 dB Large Signal Voltage Gain AVO Load resistance (RL) = 2 kΩ, output voltage (VOUT) = 0.5 V to 2.2 V 90 100 dB −40°C < TA < +85°C 80 dB −40°C < TA < +125°C 63 dB RL = 600 Ω, VOUT = 0.5 V to 2.2 V 85 95 dB Input Capacitance CIN Differential Mode CINDM 2.5 pF Common Mode CINCM 7 pF Logic High Voltage (Enabled) VIH −40°C < TA < +125°C 1.6 V Logic Low Voltage (Power-Down) VIL −40°C < TA < +125°C 0.5 V Logic Input Current (Per Pin) IIN −40°C < TA < +125°C, 0 V ≤ shutdown voltage (VSD) ≤ 2.7 V 1 µA OUTPUT CHARACTERISTICS Output Voltage High VOH RL = 2 kΩ to VCM 2.65 2.67 V RL = 600 Ω to VCM 2.55 2.59 V Output Voltage Low VOL RL = 2 kΩ to VCM 24 33 mV −40°C < TA < +125°C 43 mV RL = 600 Ω to VCM 78 103 mV −40°C < TA < +125°C 138 mV Short-Circuit Current ISC VOUT = VSY or GND ±15 mA Closed-Loop Output Impedance ZOUT Frequency (f) = 1 MHz, voltage gain (AV) = −100 372 Ω Output Pin Leakage Current −40°C < TA < +125°C, shutdown active, VSD = negative supply voltage (VSS) 10 nA POWER SUPPLY Power Supply Rejection Ratio PSRR VSY = 2.7 V to 5.5 V 80 90 dB −40°C < TA < +125°C 75 dB Supply Current Per Amplifier ISY VOUT = VSY/2 165 200 µA −40°C < TA < +125°C 240 µA Supply Current Shutdown Mode ISD All amplifiers shut down, VSD = VSS 10 nA −40°C < TA < +125°C 2 µA

ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 Data Sheet Rev. E | Page 4 of 19 Parameter Symbol Test Conditions/Comments Min Typ Max Unit DYNAMIC PERFORMANCE Slew Rate SR RL = 600 Ω, load capacitance (CL) = 20 pF, AV = +1 1.1 V/µs RL = 2 kΩ, CL = 20 pF, AV = +1 1.4 V/µs Settling Time to 0.1% tS Step = 0.5 V, RL = 2 kΩ, 600 Ω 1 µs Gain Bandwidth Product GBP RL = 1 MΩ, CL = 35 pF, AV = +1 3.6 MHz Phase Margin ΦM RL = 1 MΩ, CL = 35 p F, AV = +1 49 Degrees Turn-On/Turn-Off Time RL = 600 Ω 1 µs NOISE PERFORMANCE Distortion THD + N AV = −1, RL = 2 kΩ, f = 1 kHz, input voltage (VIN) rms =

0.15 V rms

0.009 % AV = −1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.15 V rms 0.01 % AV = +1, RL = 2 kΩ, f = 1 kHz, VIN rms = 0.15 V rms 0.006 % AV = +1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.15 V rms 0.009 % Voltage Noise en p-p f = 0.1 Hz to 10 Hz 3.1 µV p-p Voltage Noise Density en f = 1 kHz 16 nV/√Hz f = 10 kHz 13 nV/√Hz ELECTRICAL CHARACTERISTICS—5 V OPERATION VSY = 5 V, VCM = VSY/2, TA = 25°C, unless otherwise specified. Table 3. Parameter Symbol Test Conditions/Comments Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage VOS VCM = −0.3 V to +3.9 V 0.5 2.5 mV Dual (ADA469x-2) VCM = −0.1 V to +3.9 V; −40°C < TA < +125°C 3.5 mV Quad (ADA469x-4) VCM = −0.1 V to +3.9 V; −40°C < TA < +125°C 4.0 mV Offset Voltage Drift ΔVOS/ΔT −40°C < TA < +125°C 1 4 µV/°C Input Bias Current IB 0.5 5 pA −40°C < TA < +125°C 360 pA Input Offset Current IOS 1 8 pA −40°C < TA < +125°C 260 pA Input Voltage Range −40°C < TA < +125°C −0.3 +3.9 V Common-Mode Rejection Ratio CMRR VCM = −0.3 V to +3.9 V 75 98 dB VCM = −0.1 V to +3.9 V; −40°C < TA < +125°C 68 dB Large Signal Voltage Gain AVO RL = 2 kΩ, VOUT = 0.5 V to 4.5 V, VCM = 0 V 95 110 dB −40°C < TA < +85°C 80 dB −40°C < TA < +125°C 70 dB RL = 600 Ω, VOUT = 0.5 V to 4.5 V, VCM = 0 V 90 100 dB Input Capacitance Differential Mode CINDM 2.5 pF Common Mode CINCM 7 pF Logic High Voltage (Enabled) VIH −40°C < TA < +125°C 2.0 V Logic Low Voltage (Power-Down) VIL −40°C < TA < +125°C 0.8 V Logic Input Current (Per Pin) IIN −40°C < TA < +125°C, 0 V ≤ VSD ≤ 2.7 V 1 µA

Data Sheet ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 Rev. E | Page 5 of 19 Parameter Symbol Test Conditions/Comments Min Typ Max Unit OUTPUT CHARACTERISTICS Output Voltage High VOH RL = 2 kΩ to VCM 4.95 4.97 V RL = 600 Ω to VCM 4.85 4.88 V Output Voltage Low VOL RL = 2 kΩ to VCM 30 40 mV −40°C ≤ TA ≤ +125°C 55 mV RL = 600 Ω to VCM 100 128 mV −40°C ≤ TA ≤ +125°C 173 mV Short-Circuit Limit ISC VOUT = VSY or GND ±55 mA Closed-Loop Output Impedance ZOUT ADA4691-2, f = 1 MHz, AV = −100 364 Ω ADA4691-2, f = 1 MHz, AV = −100 246 Ω Output Pin Leakage Current −40°C < TA < +125°C, shutdown active, VSD = VSS 10 nA POWER SUPPLY Power Supply Rejection Ratio PSRR VSY = 2.7 V to 5.5 V 80 90 dB −40°C ≤ TA ≤ +125°C 75 dB Supply Current Per Amplifier ISY VOUT = VSY/2 180 225 µA −40°C ≤ TA ≤ +125°C 275 µA Supply Current Shutdown Mode ISD All amplifiers shut down, VSD = VSS 10 nA −40°C ≤ TA ≤ +125°C 2 µA DYNAMIC PERFORMANCE Slew Rate SR RL = 2 kΩ, 600 Ω, CL = 20 pF, AV = +1 1.3 V/µs Settling Time to 0.1% tS VIN = 2 V step, RL = 2 kΩ or 600 Ω 1.5 µs Gain Bandwidth Product GBP RL = 1 MΩ, CL = 35 pF, AV = +1 3.6 MHz Phase Margin ΦM RL = 1 MΩ, CL = 35 p F, AV = +1 52 Degrees Turn-On/Turn-Off Time RL = 600 Ω 1 µs NOISE PERFORMANCE Distortion THD + N AV = −1, RL = 2 kΩ, f = 1 kHz, VIN rms = 0.8 V rms 0.006 % AV = −1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.8 V rms 0.008 % AV = +1, RL = 2 kΩ, f = 1 kHz, VIN rms = 0.8 V rms 0.001 % AV = +1, RL = 600 Ω, f = 1 kHz, VIN rms = 0.8 V rms 0.003 % Voltage Noise en p-p f = 0.1 Hz to 10 Hz 3.2 µV p-p Voltage Noise Density en f = 1 kHz 16 nV/√Hz en f = 10 kHz 13 nV/√Hz

10 mA or less whenever the input signal exceeds the power supply rail by 0.3 V.

2 Differential input voltage is limited to 6 V or the supply voltage, whichever

Table 5. Thermal Resistance

0.20 REF

0.20 MIN

0.05 MAX

0.02 NOM

Figure 62. 16-Lead Lead Frame Chip Scale Package [LFCSP] Figure 63. 9-Ball Wafer Level Chip Scale Package [WLCSP]

Figure 64. 10-Lead Lead Frame Chip Scale Package [LFCSP]

0.50 BSC

Figure 65. 8-Lead Lead Frame Chip Scale Package [LFCSP] REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 66. 8-Lead Standard Small Outline Package [SOIC_N]

0.65 BSC

Figure 67. 14-Lead Thin Shrink Small Outline Package [TSSOP] registered trademarks are the property of their respective ow ners.