Precision CMOS Single-Supply Rail-to-Rail Input/Output Wideband Operational Amplifiers AD8601/AD8602/AD8604
FEATURES Low Offset Voltage: 500 V Max Single-Supply Operation: 2.7 V to 5.5 V Low Supply Current: 750 A/Amplifier Wide Bandwidth: 8 MHz Slew Rate: 5 V/ s Low Distortion No Phase Reversal Low Input Currents Unity Gain Stable APPLICATIONS Current Sensing Barcode Scanners PA Controls Battery-Powered Instrumentation Multipole Filters Sensors ASIC Input or Output Amplifiers Audio FUNCTIONAL BLOCK DIAGRAM 14-Lead TSSOP (RU Suffix) 5-Lead SOT-23 (RT Suffix)
OUT A 1 IN A
2
14 13 12
OUT D IN D IN D V IN C IN C OUT C
OUT A 1 V 2
5V
AD8601
4 IN
IN A 3 V
4
AD8604
11 10 9 8
IN 3
IN B 5 IN B
6
OUT B 7
8-Lead MSOP (RM Suffix)
OUT A 1 IN A
2 8 7
14-Lead SOIC (R Suffix)
OUT A 1 IN A 2
14 OUT D 13 12
V OUT B IN B IN B
AD8602
6 5 4
IN A 3
IN D IN D
V
GENERAL DESCRIPTION
IN A 3 V
4
The AD8601, AD8602, and AD8604 are single, dual, and quad rail-to-rail input and output single-supply amplifiers featuring very low offset voltage and wide signal bandwidth. These amplifiers use a new, patented trimming technique that achieves superior performance without laser trimming. All are fully specified to operate on a 3 V to 5 V single supply. The combination of low offsets, very low input bias currents, and high speed make these amplifiers useful in a wide variety of applications. Filters, integrators, diode amplifiers, shunt current sensors, and high impedance sensors all benefit from the combination of performance features. Audio and other ac applications benefit from the wide bandwidth and low distortion. For the most cost-sensitive applications, the D grades offer this ac performance with lower dc precision at a lower price point. Applications for these amplifiers include audio amplification for portable devices, portable phone headsets, bar code scanners, portable instruments, cellular PA controls, and multipole filters. The ability to swing rail-to-rail at both the input and output enables designers to buffer CMOS ADCs, DACs, ASICs, and other wide output swing devices in single-supply systems.
AD8604
11 V 10 9 8
IN B 5 IN B 6 OUT B 7
IN C IN C OUT C
8-Lead SOIC (R Suffix)
OUT A 1 IN A 2 IN A 3 V 4
8V
AD8602
7 OUT B 6 5 IN B IN B
The AD8601, AD8602, and AD8604 are specified over the extended industrial (–40°C to +125°C) temperature range. The AD8601, single, is available in the tiny 5-lead SOT-23 package. The AD8602, dual, is available in 8-lead MSOP and narrow SOIC surface-mount packages. The AD8604, quad, is available in 14-lead TSSOP and narrow SOIC packages. SOT, MSOP, and TSSOP versions are available in tape and reel only.
R EV. D
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AD8601/AD8602/AD8604–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
Parameter Symbol INPUT CHARACTERISTICS Offset Voltage (AD8601/AD8602) VOS
(VS = 3 V, VCM = VS/2, TA = 25 C, unless otherwise noted.)
Conditions 0 V ≤ VCM ≤ 1.3 V –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +125°C 0 V ≤ VCM ≤ 3 V* –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +125°C VCM = 0 V to 1.3 V –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +125°C VCM = 0 V to 3.0 V* –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +125°C –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +125°C –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +125°C VCM = 0 V to 3 V VO = 0.5 V to 2.5 V, RL = 2 kΩ , VCM = 0 V 0 68 30 83 100 2 2.95 20 ± 30 12 67 80 680 56 1,000 1,300 35 50 Min A Grade Typ Max 80 500 700 1,100 750 1,800 2,100 600 800 1,600 800 2,200 2,400 60 100 1,000 30 50 500 3 Min D Grade Typ Max 1,100 6,000 7,000 7,000 6,000 7,000 7,000 6,000 7,000 7,000 6,000 7,000 7,000 200 200 1,000 100 100 500 3 Unit µV µV µV µV µV µV µV µV µV µV µV µV pA pA pA pA pA pA V dB V/mV µV/°C V V mV mV mA Ω
350
1,300
Offset Voltage (AD8604)
VOS
80
1,100
350
1,300
Input Bias Current
IB
Input Offset Current
IOS
0.2 25 150 0.1
0.2 25 150 0.1
Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Current Closed-Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Density Current Noise Density
CMRR AVO ∆VOS/∆T VOH VOL IOUT ZOUT PSRR ISY
0 52 20
65 60 2 2.95 20 ± 30 12 72 680 35 50
IL = 1.0 mA –40°C ≤ TA ≤ +125°C IL = 1.0 mA –40°C ≤ TA ≤ +125°C f = 1 MHz, AV = 1 VS = 2.7 V to 5.5 V VO = 0 V –40°C ≤ TA ≤ +125°C R L = 2 kΩ To 0.01%
2.92 2.88
2.92 2.88
dB 1,000 µA 1,300 µA V/µs µs MHz Degrees nV/√Hz nV/√Hz pA/√Hz
SR tS GBP o en en in
5.2
