Datasheet

Data Sheet AD8691/AD8692/AD8694
Rev. F | Page 3 of 16
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
V
S
= 2.7 V, V
CM
= V
S
/2, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
V
CM
= −0.3 V to +1.6 V 0.4 2.0 mV
V
CM
= −0.1 V to +1.6 V; −40°C < T
A
< +125°C 3.0 mV
Input Bias Current
I
B
0.2
1
pA
−40°C < T
A
< +85°C 50 pA
−40°C < T
A
< +125°C 260 pA
Input Offset Current I
OS
0.1 0.5 pA
−40°C < T
A
< +85°C 20 pA
−40°C < T
A
< +125°C 75 pA
Input Voltage Range −0.3 +1.6 V
Common-Mode Rejection Ratio CMRR V
CM
= −0.3 V to +1.6 V 68 90 dB
V
CM
= −0.1 V to +1.6 V; −40°C < T
A
< +125°C 60 85 dB
Large Signal Voltage Gain A
VO
AD8691/AD8692 R
L
= 2 kΩ, V
O
= 0.5 V to 2.2 V 90 250 V/mV
AD8694
R
L
= 2 kΩ, V
O
= 0.5 V to 2.2 V
60
V/mV
Offset Voltage Drift ∆V
OS
/∆T
AD8691 2 12 µV/°C
AD8692/AD8694 1.3 6 µV/°C
INPUT CAPACITANCE
Common-Mode Input Capacitance C
CM
5 pF
Differential Input Capacitance C
DM
2.5 pF
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
I
L
= 1 mA 2.64 2.66 V
−40°C < T
A
< +125°C 2.6 V
Output Voltage Low V
OL
I
L
= 1 mA 25 40 mV
−40°C < T
A
< +125°C
60
mV
Short-Circuit Current I
SC
±20 mA
Closed-Loop Output Impedance Z
OUT
f = 1 MHz, A
V
= 1 12 Ω
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= 2.7 V to 5.5 V 80 95 dB
−40°C < T
A
< +125°C 75 95 dB
Supply Current/Amplifier I
SY
V
O
= 0 V 0.85 0.95 mA
−40°C < T
A
< +125°C 1.2 mA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 2 kΩ 5 V/µs
Settling Time t
S
To 0.01% 1 µs
Gain Bandwidth Product GBP 10 MHz
Phase Margin Ø
m
60 Degrees
Total Harmonic Distortion + Noise THD + N G = 1, R
L
= 600 Ω, f = 1 kHz, V
O
= 250 mV p-p 0.003 %
NOISE PERFORMANCE
Voltage Noise e
n p-p
f = 0.1 Hz to 10 Hz 1.6 3.0 µV p-p
Voltage Noise Density e
n
f = 1 kHz 8 12 nV/√Hz
e
n
f = 10 kHz 6.5 nV/√Hz
Current Noise Density i
n
f = 1 kHz 0.05 pA/√Hz