Datasheet

AD8665/AD8666/AD8668
Rev. B | Page 3 of 16
SPECIFICATIONS
V
DD
= 5.0 V, V
CM
= V
DD
/2, T
A
= 25
o
C, unless otherwise noted.
Table 1.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
V
CM
= 2.5 V 0.7 2.5 mV
V
CM
= −0.1 V to +3.0 V 3.0 mV
−40°C < T
A
< +125°C 5.0 mV
Offset Voltage Drift ΔV
OS
/ΔT −40°C < T
A
< +125°C 3.0 10 μV/°C
Input Bias Current I
B
0.2 1 pA
−40°C < T
A
< +125°C
550
pA
Input Offset Current I
OS
0.1 0.5 pA
−40°C < T
A
< +125°C 70 pA
Input Voltage Range V
CM
−0.1 +3.0 V
Common-Mode Rejection Ratio CMRR V
CM
= −0.1 V to +3.0 V 84 100 dB
−40°C < T
A
< +125°C 79 dB
Large-Signal Voltage Gain A
VO
R
L
= 2 kΩ, V
O
= 0.5 V to 4.5 V 68 145 V/mV
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
I
OUT
= 1 mA 4.88 4.93 V
−40°C < T
A
< +125°C 4.86 V
Output Voltage Low V
OL
I
OUT
= 1 mA 50 85 mV
−40°C < T
A
< +125°C 105 mV
Short-Circuit Output Current I
SC
±19 mA
Closed-Loop Output Impedance Z
OUT
At 1 MHz, A
V
= 1 50 Ω
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
DD
= 5.0 V to 16 V 98 115 dB
−40°C < T
A
< +125°C 94 dB
Supply Current per Amplifier I
SY
1.1 1.4 mA
−40°C < T
A
< +125°C 2.0 mA
DYNAMIC PERFORMANCE
Slew Rate
SR
R
L
= 2 kΩ
3.5
V/μs
Gain Bandwidth Product GBP 4 MHz
Phase Margin Φ
M
70 Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise e
n
p-p 0.1 Hz to 10 Hz 2.4 μV p-p
Voltage Noise Density e
n
f = 1 kHz 10 nV/√Hz
f = 10 kHz 8 nV/√Hz
Channel Separation CS f = 10 kHz −115 dB