Datasheet
OPA314
OPA2314
OPA4314
www.ti.com
SBOS563F –MAY 2011–REVISED AUGUST 2013
ELECTRICAL CHARACTERISTICS: V
S
= +1.8 V to +5.5 V
(1)
Boldface limits apply over the specified temperature range: T
A
= –40°C to +125°C.
At T
A
= +25 °C, R
L
= 10 kΩ connected to V
S
/2, V
CM
= V
S
/2, and V
OUT
= V
S
/2, unless otherwise noted.
OPA314, OPA2314, OPA4314
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
V
OS
Input offset voltage V
CM
= (V
S
+) – 1.3 V 0.5 2.5 mV
dV
OS
/dT vs Temperature 1 μV/°C
PSRR vs power supply V
CM
= (V
S
+) – 1.3 V 78 92 dB
Over temperature 74 dB
Channel separation, dc At dc 10 µV/V
INPUT VOLTAGE RANGE
V
CM
Common-mode voltage range (V–) – 0.2 (V+) + 0.2 V
V
S
= 1.8 V to 5.5 V, (V
S
–) – 0.2 V < V
CM
< (V
S
+) – 1.3 V 75 96 dB
CMRR Common-mode rejection ratio
V
S
= 5.5 V, V
CM
= –0.2 V to 5.7 V
(2)
66 80 dB
V
S
= 1.8 V, (V
S
–) – 0.2 V < V
CM
< (V
S
+) – 1.3 V 70 86 dB
Over temperature V
S
= 5.5 V, (V
S
–) – 0.2 V < V
CM
< (V
S
+) – 1.3 V 73 90 dB
V
S
= 5.5 V, V
CM
= –0.2 V to 5.7 V
(2)
60 dB
INPUT BIAS CURRENT
I
B
Input bias current ±0.2 ±10 pA
Over temperature ±600 pA
I
OS
Input offset current ±0.2 ±10 pA
Over temperature ±600 pA
NOISE
Input voltage noise (peak-to-
f = 0.1 Hz to 10 Hz 5 μV
PP
peak)
f = 10 kHz 13 nV/√Hz
e
n
Input voltage noise density
f = 1 kHz 14 nV/√Hz
i
n
Input current noise density f = 1 kHz 5 fA/√Hz
INPUT CAPACITANCE
Differential V
S
= 5.0 V 1 pF
C
IN
Common-mode V
S
= 5.0 V 5 pF
OPEN-LOOP GAIN
V
S
= 1.8 V, 0.2 V < V
O
< (V+) – 0.2 V, R
L
= 10 kΩ 90 115 dB
V
S
= 5.5 V, 0.2 V < V
O
< (V+) – 0.2 V, R
L
= 10 kΩ 100 128 dB
A
OL
Open-loop voltage gain
V
S
= 1.8 V, 0.5 V < V
O
< (V+) – 0.5 V, R
L
= 2 kΩ
(2)
90 100 dB
V
S
= 5.5 V, 0.5 V < V
O
< (V+) – 0.5 V, R
L
= 2 kΩ
(2)
94 110 dB
V
S
= 5.5 V, 0.2 V < V
O
< (V+) – 0.2 V, R
L
= 10 kΩ 90 110 dB
Over temperature
V
S
= 5.5 V, 0.5 V < V
O
< (V+) – 0.2 V, R
L
= 2 kΩ 100 dB
Phase margin V
S
= 5.0 V, G = +1, R
L
= 10 kΩ 65 deg
(1) Parameters with minimum or maximum specification limits are 100% production tested at +25ºC, unless otherwise noted. Over
temperature limits are based on characterization and statistical analysis.
(2) Specified by design and characterization; not production tested.
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