Datasheet

Data Sheet ADA4084-2
Rev. C | Page 3 of 28
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
V
SY
= 3 V, V
CM
=1.5 V, T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
SOIC package 100 μV
−40°C ≤ T
A
≤ +125°C 200 μV
MSOP package 130 μV
−40°C ≤ T
A
≤ +125°C 250 μV
LFCSP package 200 μV
−40°C ≤ T
A
≤ +125°C 300 μV
Offset Voltage Drift ΔV
OS
/ΔT −40°C ≤ T
A
≤ +125°C 0.5 1.75 µV/°C
Offset Voltage Matching Channel A vs. Channel B, T
A
= 25°C 150 μV
Input Bias Current I
B
140 300 nA
–40°C ≤ T
A
≤ +125°C 450 nA
Input Offset Current I
OS
25 nA
–40°C ≤ T
A
≤ +125°C 50 nA
Input Voltage Range 0 3 V
Common-Mode Rejection Ratio
CMRR
V
CM
= 0 V to 3 V
64
80
dB
−40°C ≤ T
A
≤ +125°C 60 dB
Large Signal Voltage Gain A
VO
R
L
= 2 kΩ, 0.5 V ≤ V
O
≤ 2.5 V 100 104 dB
R
L
= 2 kΩ, −40°C ≤ T
A
≤ +125°C 97 dB
Input Impedance, Differential 100||1.1 kΩ||pF
Input Impedance, Common-Mode
80||2.9
MΩ||pF
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
R
L
= 10 kΩ to V
CM
2.85 2.95 V
–40°C ≤ T
A
≤ +125°C 2.8 V
R
L
= 2 kΩ to V
CM
2.8 2.9 V
–40°C ≤ T
A
≤ +125°C 2.7 V
Output Voltage Low V
OL
R
L
= 10 kΩ to V
CM
10 20 mV
–40°C ≤ T
A
≤ +125°C 40 mV
R
L
= 2 kΩ to V
CM
50 mV
–40°C ≤ T
A
≤ +125°C
75
mV
Short-Circuit Current I
SC
−17/+10 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
SY
= ±1.25 V to ±1.75 V 100 110 dB
–40°C ≤ T
A
≤ +125°C 90 dB
Supply Current/Amplifier I
SY
I
O
= 0 mA 565 650 µA
–40°C ≤ T
A
≤ +125°C 950 µA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 2 kΩ 2.0 2.6 V/µs
Gain Bandwidth Product GBP V
IN
= 5 mV p-p, R
L
= 10 kΩ, A
V
= 100 15.4 MHz
Unity-Gain Crossover UGC V
IN
= 5 mV p-p, R
L
= 10 kΩ, A
V
= 1 8.08 MHz
Phase Margin
Φ
M
86
Degrees
−3 dB Closed-Loop Bandwidth −3 dB A
V
= 1, V
IN
= 5 mV p-p 12.3 MHz
NOISE PERFORMANCE
Voltage Noise e
n
p-p 0.1 Hz to 10 Hz 0.14 μV p-p
Voltage Noise Density e
n
f = 1 kHz 3.9 nV/√Hz
Current Noise Density i
n
f = 1 kHz 0.55 pA/√Hz