Datasheet

AD8500
Rev. B | Page 3 of 12
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
@ V
S
= 5 V, V
CM
= V
S
/2, T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
0 V < V
CM
< 5 V 0.235 1 mV
Offset Voltage Drift ∆V
OS
/∆T −40°C < T
A
< +85°C 3 10 μV/°C
Input Voltage Range −0.3 +5.3 V
Input Bias Current I
B
1 10 pA
−40°C < T
A
< +85°C 100 pA
−40°C < T
A
< +125°C 600 pA
Input Offset Current I
OS
0.5 5 pA
−40°C < T
A
< +85°C 50 pA
−40°C < T
A
< +125°C 100 pA
Common-Mode Rejection Ratio CMRR 0 V < V
CM
< 5 V 75 90 dB
−40°C < T
A
< +85°C 70 90 dB
Large Signal Voltage Gain A
VO
0.1 V < V
OUT
< 4.9 V 98 120 dB
0.1 V < V
OUT
< 4.9 V; −40°C < T
A
< +85°C 80 dB
Input Capacitance C
DIFF
2 pF
C
CM
4.5 pF
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
R
LOAD
= 100 kΩ to GND 4.970 4.995 V
R
LOAD
= 10 kΩ to GND 4.900 4.960 V
Output Voltage Low V
OL
R
LOAD
= 100 kΩ to V
S
0.85 5 mV
R
LOAD
= 10 kΩ to V
S
6.5 15 mV
Short-Circuit Current I
SC
V
OUT
= GND ±5 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR 1.8 V < V
S
< 5 V 90 110 dB
−40°C < T
A
< +85°C 80 dB
Supply Current/Amplifier I
SY
V
O
= V
S
/2 0.75 1 μA
−40°C < T
A
< +85°C 1.5 μA
−40°C < T
A
< +125°C 2 μA
DYNAMIC PERFORMANCE
Slew Rate SR 0.004 V/μs
Gain Bandwidth Product GBP 7 kHz
Phase Margin Ø
O
60 Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise 0.1 Hz to 10 Hz 6 μV p-p
Voltage Noise Density e
n
f = 1 kHz 190 nV/√Hz
Current Noise Density i
n
f = 1 kHz 0.1 pA/√Hz