Datasheet

ADA4051-1/ADA4051-2
Rev. B | Page 3 of 20
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—1.8 V OPERATION
V
SY
= 1.8 V, V
CM
= V
SY
/2 V, T
A
= 25°C, R
L
= 100 kΩ to GND, unless otherwise noted.
Table 2.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
ADA4051-2 0 V ≤ V
CM
≤ 1.8 V 2 15 μV
ADA4051-1 0 V ≤ V
CM
≤ 1.8 V 2 17 μV
Offset Voltage Drift ∆V
OS
/∆T −40°C ≤ T
A
≤ +125°C 0.02 0.1 μV/°C
Input Bias Current I
B
5 50 pA
−40°C ≤ T
A
≤ +125°C 200 pA
Input Offset Current I
OS
10 100 pA
−40°C ≤ T
A
≤ +125°C 150 pA
Input Voltage Range −40°C ≤ T
A
≤ +125°C 0 1.8 V
Common-Mode Rejection Ratio CMRR 0 V ≤ V
CM
≤ 1.8 V 105 125 dB
−40°C ≤ T
A
≤ +125°C 100 dB
Large-Signal Voltage Gain A
VO
R
L
= 10 kΩ to V
CM
,
0.1 V ≤ V
OUT
≤ V
SY
− 0.1 V
106 130 dB
−40°C ≤ T
A
≤ +125°C 100 dB
Input Resistance R
IN
8 MΩ
Input Capacitance, Differential Mode C
INDM
2 pF
Input Capacitance, Common Mode C
INCM
5 pF
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
R
L
= 100 kΩ to V
CM
1.796 1.799 V
−40°C ≤ T
A
≤ +125°C 1.79 V
R
L
= 10 kΩ to V
CM
1.76 1.796 V
−40°C ≤ T
A
≤ +125°C 1.7 V
Output Voltage Low V
OL
R
L
= 100 kΩ to V
CM
1 3 mV
−40°C ≤ T
A
≤ +125°C 9 mV
R
L
= 10 kΩ to V
CM
3 20 mV
−40°C ≤ T
A
≤ +125°C 40 mV
Short-Circuit Current I
SC
V
OUT
= V
SY
or GND 13 mA
Closed-Loop Output Impedance Z
OUT
f = 1 kHz, G = 10 1 Ω
POWER SUPPLY
Power Supply Rejection Ratio PSRR 1.8 V ≤ V
SY
≤ 5.5 V 110 135 dB
−40°C ≤ T
A
≤ +125°C 106 dB
Supply Current per Amplifier I
SY
ADA4051-2 V
OUT
= V
SY
/2 13 17 μA
ADA4051-1 V
OUT
= V
SY
/2 15 18 μA
−40°C ≤ T
A
≤ +125°C 20 μA
DYNAMIC PERFORMANCE
Slew Rate SR+ R
L
= 10 kΩ, C
L
= 100 pF, G = 1 0.04 V/μs
SR− R
L
= 10 kΩ, C
L
= 100 pF, G = 1 0.03 V/μs
Settling Time t
S
To 0.1%, V
IN
= 1 V p-p,
R
L
= 10 kΩ, C
L
= 100 pF
120 μs
Gain Bandwidth Product GBP C
L
= 100 pF, G = 1 115 kHz
Phase Margin Φ
M
C
L
= 100 pF, G = 1 40 Degrees
Channel Separation CS V
IN
= 1.7 V, f = 100 Hz 140 dB
NOISE PERFORMANCE
Voltage Noise e
n
p-p f = 0.1 Hz to 10 Hz 1.96 μV p-p
Voltage Noise Density e
n
f = 1 kHz 95 nV/√Hz
Current Noise Density i
n
f = 1 kHz 100 fA/√Hz