Datasheet

OPA348
OPA2348
OPA4348
www.ti.com SBOS213G –NOVEMBER 2001–REVISED MARCH 2013
ELECTRICAL CHARACTERISTICS: V
S
= 2.5V to 5.5V
Boldface limits apply over the specified temperature range, T
A
= –40°C to +125°C.
At T
A
= +25°C, R
L
= 100kΩ connected to V
S
/ 2 and V
OUT
= V
S
/ 2, unless otherwise noted.
OPA348, OPA2348, OPA4348
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
Input Offset Voltage V
OS
V
S
= 5V, V
CM
= (V–) + 0.8V 1 5 mV
Over Temperature 6 mV
Drift dV
OS
/dT 4 µV/°C
vs Power Supply PSRR V
S
= 2.5V to 5.5V, V
CM
< (V+) – 1.7V 60 175 µV/V
Over Temperature V
S
= 2.5V to 5.5V, V
CM
< (V+) – 1.7V 300 µV/V
Channel Separation, dc 0.2 µV/V
f = 1kHz 134 dB
INPUT VOLTAGE RANGE
Common-Mode Voltage Range V
CM
(V–) – 0.2 (V+) + 0.2 V
Common-Mode Rejection Ratio CMRR (V–) – 0.2V < V
CM
< (V+) – 1.7V 70 82 dB
over Temperature (V–) < V
CM
< (V+) – 1.7V 66 dB
V
S
= 5.5V, (V–) – 0.2V < V
CM
< (V+) + 0.2V 60 71 dB
over Temperature V
S
= 5.5V, (V–) < V
CM
< (V+) 56 dB
INPUT BIAS CURRENT
Input Bias Current I
B
±0.5 ±10 pA
Input Offset Current I
OS
±0.5 ±10 pA
INPUT IMPEDANCE
Differential Ω || pF
10
13
|| 3
Common-Mode Ω || pF
10
13
|| 6
NOISE V
CM
< (V+) – 1.7V
Input Voltage Noise, f = 0.1Hz to 10Hz 10 µV
PP
Input Voltage Noise Density, f = 1kHz e
n
35 nV/Hz
Input Current Noise Density, f = 1kHz i
n
4 fA/Hz
OPEN-LOOP GAIN
V
S
= 5V, R
L
= 100kΩ,
Open-Loop Voltage Gain A
OL
94 108 dB
0.025V < V
O
< 4.975V
V
S
= 5V, R
L
= 100kΩ,
over Temperature 90 dB
0.025V < V
O
< 4.975V
V
S
= 5V, R
L
= 5kΩ, 0.125V < V
O
< 4.875V 90 98 dB
over Temperature V
S
= 5V, R
L
= 5kΩ, 0.125V < V
O
< 4.875V 88 dB
OUTPUT
Voltage Output Swing from Rail R
L
= 100kΩ, A
OL
> 94dB 18 25 mV
over Temperature R
L
= 100kΩ, A
OL
> 90dB 25 mV
R
L
= 5kΩ, A
OL
> 90dB 100 125 mV
over Temperature R
L
= 5kΩ, A
OL
> 88dB 125 mV
Short-Circuit Current I
SC
±10 mA
Capacitive Load Drive C
LOAD
See Typical Characteristics
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