Datasheet AD8646, AD8647, AD8648 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 24 MHz Rail-to-Rail Dual Amplifier with Low Power Shutdown function |
| Pages / Page | 18 / 5 — Data Sheet. AD8646/AD8647/AD8648. Table 2. Parameter. Symbol. Conditions. … |
| Revision | F |
| File Format / Size | PDF / 519 Kb |
| Document Language | English |
Data Sheet. AD8646/AD8647/AD8648. Table 2. Parameter. Symbol. Conditions. Min. Typ. Max. Unit
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Text Version of Document
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Data Sheet AD8646/AD8647/AD8648
VSY = 2.7 V, VCM = VSY/2, TA = +25oC, unless otherwise noted.
Table 2. Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS Offset Voltage VOS VCM = 0 V to 2.7 V 0.6 2.5 mV −40°C < TA < +125°C 3.2 mV Offset Voltage Drift ΔVOS/ΔT −40°C < TA < +125°C 1.8 7.0 μV/°C Input Bias Current IB 0.2 1 pA −40°C < TA < +85°C 50 pA −40°C < TA < +125°C 550 pA Input Offset Current IOS 0.1 0.5 pA −40°C < TA < +85°C 50 pA −40°C < TA < +125°C 250 pA Input Voltage Range VCM 0 2.7 V Common-Mode Rejection Ratio CMRR VCM = 0 V to 2.7 V 62 79 dB Large Signal Voltage Gain AVO RL = 2 kΩ, VO = 0.5 V to 2.2 V 95 102 dB Input Capacitance Differential CDIFF 2.5 pF Common Mode CCM 7.8 pF OUTPUT CHARACTERISTICS Output Voltage High VOH IOUT = 1 mA 2.65 2.68 V −40°C < TA < +125°C 2.60 V Output Voltage Low VOL IOUT = 1 mA 11 25 mV −40°C < TA < +125°C 30 mV Output Current Isc Short circuit ±63 mA Closed-Loop Output Impedance ZOUT At 1 MHz, AV = 1 5 Ω POWER SUPPLY Power Supply Rejection Ratio PSRR VSY = 2.7 V to 5.5 V 63 80 dB Supply Current per Amplifier ISY 1.6 2.0 mA −40°C < TA < +125°C 2.5 mA Supply Current Shutdown Mode ISD Both amplifiers shut down, 10 nA (AD8647 Only) VIN_SDA and VIN_SDB = 0 V −40°C < TA < +125°C 1 µA SHUTDOWN INPUTS (AD8647) Logic High Voltage (Enabled) VINH −40°C < TA < +125°C +2.0 V Logic Low Voltage (Power-Down) VINL −40°C < TA < +125°C +0.8 V Logic Input Current (Per Pin) IIN −40°C < TA < +125°C 1 µA Output Pin Leakage Current −40°C < TA < +125°C (shutdown active) 1 nA DYNAMIC PERFORMANCE Slew Rate SR RL = 2 kΩ 11 V/μs Gain Bandwidth Product GBP 24 MHz Phase Margin Øm 53 Degrees Settling Time ts To 0.1% 0.3 μs Amplifier Turn-On Time (AD8647) ton 25°C, AV = 1, RL = 1 kΩ (see Figure 41) 1.2 μs Amplifier Turn-Off Time (AD8647) toff 25°C, AV = 1, RL = 1 kΩ (see Figure 42) 1 μs NOISE PERFORMANCE Peak-to-Peak Noise en p-p 0.1 Hz to 10 Hz 2.3 μV Voltage Noise Density en f = 1 kHz 8 nV/√Hz f = 10 kHz 6 nV/√Hz Channel Separation CS f = 10 kHz −115 dB f = 100 kHz −110 dB Rev. F | Page 5 of 18 Document Outline FEATURES APPLICATIONS PIN CONFIGURATIONS GENERAL DESCRIPTION REVISION HISTORY Revision History: AD8646/AD8647/AD8648 Revision History: AD8646 Revision History: AD8648 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER-DOWN OPERATION MULTIPLEXING OPERATION OUTLINE DIMENSIONS ORDERING GUIDE
Data Sheet AD8646/AD8647/AD8648
VSY = 2.7 V, VCM = VSY/2, TA = +25oC, unless otherwise noted.
Table 2. Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS Offset Voltage VOS VCM = 0 V to 2.7 V 0.6 2.5 mV −40°C < TA < +125°C 3.2 mV Offset Voltage Drift ΔVOS/ΔT −40°C < TA < +125°C 1.8 7.0 μV/°C Input Bias Current IB 0.2 1 pA −40°C < TA < +85°C 50 pA −40°C < TA < +125°C 550 pA Input Offset Current IOS 0.1 0.5 pA −40°C < TA < +85°C 50 pA −40°C < TA < +125°C 250 pA Input Voltage Range VCM 0 2.7 V Common-Mode Rejection Ratio CMRR VCM = 0 V to 2.7 V 62 79 dB Large Signal Voltage Gain AVO RL = 2 kΩ, VO = 0.5 V to 2.2 V 95 102 dB Input Capacitance Differential CDIFF 2.5 pF Common Mode CCM 7.8 pF OUTPUT CHARACTERISTICS Output Voltage High VOH IOUT = 1 mA 2.65 2.68 V −40°C < TA < +125°C 2.60 V Output Voltage Low VOL IOUT = 1 mA 11 25 mV −40°C < TA < +125°C 30 mV Output Current Isc Short circuit ±63 mA Closed-Loop Output Impedance ZOUT At 1 MHz, AV = 1 5 Ω POWER SUPPLY Power Supply Rejection Ratio PSRR VSY = 2.7 V to 5.5 V 63 80 dB Supply Current per Amplifier ISY 1.6 2.0 mA −40°C < TA < +125°C 2.5 mA Supply Current Shutdown Mode ISD Both amplifiers shut down, 10 nA (AD8647 Only) VIN_SDA and VIN_SDB = 0 V −40°C < TA < +125°C 1 µA SHUTDOWN INPUTS (AD8647) Logic High Voltage (Enabled) VINH −40°C < TA < +125°C +2.0 V Logic Low Voltage (Power-Down) VINL −40°C < TA < +125°C +0.8 V Logic Input Current (Per Pin) IIN −40°C < TA < +125°C 1 µA Output Pin Leakage Current −40°C < TA < +125°C (shutdown active) 1 nA DYNAMIC PERFORMANCE Slew Rate SR RL = 2 kΩ 11 V/μs Gain Bandwidth Product GBP 24 MHz Phase Margin Øm 53 Degrees Settling Time ts To 0.1% 0.3 μs Amplifier Turn-On Time (AD8647) ton 25°C, AV = 1, RL = 1 kΩ (see Figure 41) 1.2 μs Amplifier Turn-Off Time (AD8647) toff 25°C, AV = 1, RL = 1 kΩ (see Figure 42) 1 μs NOISE PERFORMANCE Peak-to-Peak Noise en p-p 0.1 Hz to 10 Hz 2.3 μV Voltage Noise Density en f = 1 kHz 8 nV/√Hz f = 10 kHz 6 nV/√Hz Channel Separation CS f = 10 kHz −115 dB f = 100 kHz −110 dB Rev. F | Page 5 of 18 Document Outline FEATURES APPLICATIONS PIN CONFIGURATIONS GENERAL DESCRIPTION REVISION HISTORY Revision History: AD8646/AD8647/AD8648 Revision History: AD8646 Revision History: AD8648 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER-DOWN OPERATION MULTIPLEXING OPERATION OUTLINE DIMENSIONS ORDERING GUIDE
