Datasheet

ADA4084-1/ADA4084-2/ADA4084-4 Data Sheet
Rev. I | Page 4 of 36
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 20 100 µV
−40°C ≤ T
A
≤ +125°C 200 µV
SOT-23, MSOP, TSSOP packages 50 130 µV
−40°C ≤ T
A
≤ +125°C 250 µV
ADA4084-2 LFCSP package
80
200
µV
−40°C ≤ T
A
≤ +125°C 300 µV
Offset Voltage Drift Δt/ΔT −40°C ≤ T
A
≤ +125°C 0.5 1.75 µV/°C
Offset Voltage Matching T
A
= 25°C 150 µV
ADA4084-4 LFCSP package 200 µV
Input Bias Current I
B
140 250 nA
−40°C ≤ T
A
≤ +125°C 400 nA
Input Offset Current I
OS
5 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 88 dB
−40°C ≤ T
A
≤ +125°C 60 dB
Large Signal Voltage Gain
A
VO
R
L
= 2 kΩ, 0.5 V ≤ V
OUT
≤ 2.5 V
100
104
dB
−40°C ≤ T
A
≤ +125°C
97
dB
Input Impedance
Differential 100||1.1 kΩ||pF
Common Mode 80||2.9 MΩ||pF
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
R
L
= 10 kΩ to V
CM
2.90 2.95 V
−40°C ≤ T
A
≤ +125°C 2.80 V
R
L
= 2 kΩ to V
CM
2.85 2.9 V
−40°C ≤ T
A
≤ +125°C 2.70 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
20 30 mV
−40°C ≤ T
A
≤ +125°C 50 mV
Short-Circuit Current I
SC
−17/+10 mA
Closed-Loop Output Impedance Z
OUT
f = 1 kHz, A
V
= 1 0.1 Ω
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 per Amplifier I
SY
I
OUT
= 0 mA 0.565 0.650 mA
−40°C ≤ T
A
≤ +125°C 0.950 mA
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
Settling Time t
S
A
V
= 10, V
IN
= 2 V p-p, 0.1% 4 µs
Total Harmonic Distortion Plus Noise THD + N V
IN
= 300 mV rms, R
L
= 2 kΩ, f = 1 kHz 0.009 %
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
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