Datasheet

LMP7731
www.ti.com SNOSAT6E –JULY 2007–REVISED MARCH 2013
2.5V Electrical Characteristics
(1)
(continued)
Unless otherwise specified, all limits are ensured for T
A
= 25°C, V
+
= 2.5V, V
−
= 0V, V
CM
= V
+
/2, R
L
>10 kΩ to V
+
/2. Boldface
limits apply at the temperature extremes.
Parameter Test Conditions Min
(2)
Typ
(3)
Max
(2)
Units
±50
V
CM
= 2.0V ±1
±75
I
OS
Input Offset Current nA
±60
V
CM
= 0.5V ±11
±80
TCI
OS
Input Offset Current Drift V
CM
= 0.5V and V
CM
= 2.0V 0.0474 nA/°C
0.15V ≤ V
CM
≤ 0.7V 101
120
0.23V ≤ V
CM
≤ 0.7V 89
CMRR Common Mode Rejection Ratio dB
1.5V ≤ V
CM
≤ 2.35V 105
129
1.5V ≤ V
CM
≤ 2.27V 99
111
2.5V ≤ V
+
≤ 5V 129
105
PSRR Power Supply Rejection Ratio dB
1.8V ≤ V
+
≤ 5.5V 117
CMVR Common Mode Voltage Range Large Signal CMRR ≥ 80 dB 0 2.5 V
R
L
= 10 kΩ to V
+
/2 112
130
V
OUT
= 0.5V to 2.0V 104
A
VOL
Open Loop Voltage Gain dB
R
L
= 2 kΩ to V
+
/2 109
119
V
OUT
= 0.5V to 2.0V 90
50
R
L
= 10 kΩ to V
+
/2 4
75
Output Voltage Swing High
50
R
L
= 2 kΩ to V
+
/2 13
75
mV from
V
OUT
either rail
50
R
L
= 10 kΩ to V
+
/2 6
75
Output Voltage Swing Low
50
R
L
= 2 kΩ to V
+
/2 9
75
Sourcing, V
OUT
= V
+
/2 22
31
V
IN
(diff) = 100 mV 12
I
OUT
Output Current mA
Sinking, V
OUT
= V
+
/2 15
44
V
IN
(diff) = −100 mV 10
2.7
V
CM
= 2.0V 2.0
3.4
Supply Current
I
S
mA
(Per Channel)
3.1
V
CM
= 0.5V 2.3
3.9
A
V
= +1, C
L
= 10 pF, R
L
= 10 kΩ to
SR Slew Rate V
+
/2, 2.4 V/μs
V
O
= 2 V
PP
GBW Gain Bandwidth C
L
= 20 pF, R
L
= 10 kΩ to V
+
/2 21 MHz
G
M
Gain Margin C
L
= 20 pF, R
L
= 10 kΩ to V
+
/2 14 dB
Φ
M
Phase Margin C
L
= 20 pF, R
L
= 10 kΩ to V
+
/2 60 deg
Differential Mode 38 kΩ
R
IN
Input Resistance
Common Mode 151 MΩ
THD+N Total Harmonic Distortion + Noise A
V
= 1, f = 1 kHz, Amplitude = 1V 0.002 %
f = 1 kHz, V
CM
= 2.0V 3
Input Referred Voltage Noise
nV/√Hz
Density
e
n
f = 1 kHz, V
CM
= 0.5V 3
Input Voltage Noise 0.1 Hz to 10 Hz 75 nV
PP
f = 1 kHz, V
CM
= 2.0V 1.1
Input Referred Current Noise
i
n
pA/√Hz
Density
f = 1 kHz, V
CM
= 0.5V 2.3
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