Datasheet

OPA2348-Q1
OPA4348-Q1
www.ti.com SBOS465A –JANUARY 2009–REVISED MARCH 2010
ELECTRICAL CHARACTERISTICS
V
S
= 2.5 V to 5.5 V, R
L
= 100 kΩ connected to V
S
/2, V
OUT
= V
S
/2 (unless otherwise noted)
PARAMETER TEST CONDITIONS T
A
(1)
MIN TYP MAX UNIT
25°C 1 5
V
OS
Input offset voltage V
S
= 5 V, V
CM
= (V–) + 0.8 V mV
Full range 6
ΔV
OS
/ Offset voltage drift over
Full range 4 µV/°C
ΔT temperature
25°C 60 175
Offset voltage drift vs power
PSRR V
S
= 2.5 V to 5.5 V, V
CM
< (V+) – 1.7 V µV/V
supply
Full range 300
dc 25°C 0.2 µV/V
Offset voltage channel
separation
f = 1 kHz 25°C 134 dB
Input common-mode
V
CM
25°C (V–) – 0.2 (V+) + 0.2 V
voltage range
25°C 70 82
(V–) – 0.2 V < V
CM
< (V+) – 1.7 V
Full range 66
Input common-mode
CMRR dB
rejection ratio
V
S
= 5.5 V, (V–) – 0.2 V < V
CM
< (V+) + 0.2 V 25°C 60 71
V
S
= 5.5 V, (V–) < V
CM
< (V+) Full range 56
I
B
Input bias current 25°C ±0.5 ±10 pA
I
OS
Input offset current 25°C ±0.5 ±10 pA
Differential
10
13
||3
Z
I
Input impedance 25°C Ω||pF
Common-mode
10
13
||3
Input voltage noise V
CM
< (V+) – 1.7 V, f = 0.1 Hz to 10 Hz 25°C 10 µV
PP
V
n
Input voltage noise density V
CM
< (V+) – 1.7 V, f = 1 kHz 25°C 35 nV/√Hz
I
n
Input current noise density V
CM
< (V+) – 1.7 V, f = 1 kHz 25°C 4 fA/√Hz
25°C 94 108
V
S
= 5 V, R
L
= 100 kΩ, 0.025 V < V
O
< 4.975 V
Full range 90
A
OL
Open-loop voltage gain dB
25°C 90 98
V
S
= 5V, R
L
= 5 kΩ, 0.125 V < V
O
< 4.875 V
Full range 88
25°C 18 25
RL = 100 kΩ, A
OL
> 94 dB
Full range 25
Voltage output swing from
mV
rail
25°C 100 125
RL = 5 kΩ, A
OL
> 90 dB
Full range 125
I
SC
Output short-circuit current 25°C ±10 mA
C
LOAD
Capacitive load drive See Typical Characteristics 25°C
GBW Gain-bandwidth product C
L
= 100 pF 25°C 1 MHz
SR Slew rate C
L
= 100 pF, G = +1 25°C 0.5 V/µs
0.1% 5
t
s
Settling time C
L
= 100 pF, V
S
= 5.5 V, 2V- step, G = +1 25°C µs
0.01% 7
Overload recovery time V
IN
× Gain > V
S
25°C 1.6 µs
Total harmonic distortion
THD+N C
L
= 100 pF, V
S
= 5.5 V, V
O
= 3 V
PP
, G = +1, f = 1 kHz 25°C 0.0023 %
plus noise
25°C 45 65
I
Q
Quiescent current Per amplifier µA
Full range 75
(1) Full range T
A
= –40°C to 125°C
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