Datasheet

Data Sheet AD8671/AD8672/AD8674
Rev. F | Page 3 of 20
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS, ±5.0 V
V
S
= ±5.0 V, V
CM
= 0 V, T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
20 75 µV
–40°C < T
A
< +125°C 30 125 µV
Offset Voltage Drift
∆V
OS
/∆T
–40°C < T
A
< +125°C
AD8671 0.3 0.5 µV/°C
AD8672/AD8674 0.3 0.8 µV/°C
Input Bias Current I
B
–12 +3 +12 nA
+25°C < T
A
< +125°C –20 +5 +20 nA
–40°C < T
A
< +125°C
–40
+8
+40
nA
Input Offset Current I
OS
–12 +6 +12 nA
+25°C < T
A
< +125°C –20 +6 +20 nA
–40°C < T
A
< +125°C –40 +8 +40 nA
Input Voltage Range –2.5 +2.5 V
Common-Mode Rejection Ratio CMRR V
CM
= –2.5 V to +2.5 V 100 120 dB
Large Signal Voltage Gain A
VO
R
L
= 2 kΩ, V
O
= –3 V to +3 V 1000 6000 V/mV
Input Capacitance, Common Mode C
INCM
6.25 pF
Input Capacitance, Differential Mode C
INDM
7.5 pF
Input Resistance, Common Mode R
IN
3.5 GΩ
Input Resistance, Differential Mode R
INDM
15 MΩ
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
R
L
= 2 kΩ, –40°C to +125°C +3.8 +4.0 V
Output Voltage Low V
OL
R
L
= 2 kΩ, –40°C to +125°C –3.9 –3.8 V
Output Voltage High
V
OH
R
L
= 600 Ω
+3.7
+3.9
V
Output Voltage Low V
OL
R
L
= 600 Ω –3.8 –3.7 V
Output Current I
OUT
±10 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= ±4 V to ±18 V
AD8671/AD8672 110 130 dB
AD8674 106 115 dB
Supply Current/Amplifier I
SY
V
O
= 0 V 3 3.5 mA
–40°C < T
A
< +125°C 4.2 mA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 2 kΩ 4 V/µs
Settling Time
t
S
To 0.1% (4 V step, G = 1)
1.4
µs
To 0.01% (4 V step, G = 1) 5.1 µs
Gain Bandwidth Product GBP 10 MHz
NOISE PERFORMANCE
Peak-to-Peak Noise e
n p-p
0.1 Hz to 10 Hz 77 100 nV p-p
Voltage Noise Density e
n
f = 1 kHz 2.8 3.8 nV/√Hz
Current Noise Density i
n
f = 1 kHz 0.3 pA/√Hz
Channel Separation
AD8672/AD8674 C
S
f = 1 kHz –130 dB
f = 10 kHz
–105
dB