Datasheet

OPA234, OPA2234, OPA4234
3
SBOS055B
www.ti.com
ELECTRICAL CHARACTERISTICS: V
S
= +2.7V
At T
A
= 25°C, V
S
= +2.7V, R
L
= 10kΩ connected to V
S
/2, and V
OUT
= V
S
/2, unless otherwise noted.
OPA234U, E
OPA2234U
OPA234UA, EA
OPA2234UA
OPA4234UA, U
PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE
Input Offset Voltage V
OS
V
CM
= 1.35V ±40 ±100 ✻ ±250 µV
OPA234E, EA ±100 ±150 ✻ ±350 µV
vs Temperature
(1)
dV
OS
/dT Operating Temperature Range ±0.5 ±3 ✻✻µV/°C
vs Power Supply PSRR V
S
= +2.7V to +30V, V
CM
= 1.7V 3 10 ✻ 20 µV/V
vs Time 0.2 ✻ µV/mo
Channel Separation (Dual, Quad) 0.3 ✻ µV/V
INPUT BIAS CURRENT
Input Bias Current
(2)
I
B
V
CM
= 1.35V –15 –30 ✻ –50 nA
Input Offset Current I
OS
V
CM
= 1.35V ±1 ±5 ✻✻ n
NOISE f = 1kHz
Input Voltage Noise Density v
n
25 ✻ nV/√Hz
Current Noise Density i
n
80 ✻ fA/√Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range –0.1 (V+) –1 ✻✻V
Common-Mode Rejection CMRR V
CM
= –0.1V to 1.7V 91 106 86 ✻ dB
INPUT IMPEDANCE
Differential 10
7
|| 5 ✻ Ω || pF
Common-Mode V
CM
= 1.35V 10
10
|| 6 ✻ Ω || pF
OPEN-LOOP GAIN V
O
= 0.25V to 1.7V
Open-Loop Voltage Gain A
OL
R
L
= 10kΩ 108 125 100 ✻ dB
R
L
= 2kΩ 86 96 86 ✻ dB
FREQUENCY RESPONSE
Gain-Bandwidth Product GBW C
L
= 100pF 0.35 ✻ MHz
Slew Rate SR 0.2 ✻ V/µs
Settling Time: 0.1% G = 1, 1V Step, C
L
= 100pF 6 ✻ µs
0.01% G = 1, 1V Step, C
L
= 100pF 16 ✻ µs
Overload Recovery Time (V
IN
) (Gain) = V
S
8 ✻ µs
OUTPUT
Voltage Output: Positive R
L
= 10kΩ to V
S
/2 (V+) –1 (V+) –0.6 ✻✻ V
Negative R
L
= 10kΩ to V
S
/2 0.25 0.05 ✻✻ V
Positive R
L
= 10kΩ to Ground (V+) –1 (V+) –0.65 ✻✻ V
Negative R
L
= 10kΩ to Ground 0.1 0.05 ✻✻ V
Short-Circuit Current I
SC
±8 ✻ mA
Capacitive Load Drive (Stable Operation)
(3)
G = +1 1000 ✻ pF
POWER SUPPLY
Specified Operating Voltage +2.7 ✻ V
Operating Voltage Range +2.7 +36 ✻✻V
Quiescent Current (per amplifier) I
Q
I
O
= 0 250 300 ✻✻ µA
TEMPERATURE RANGE
Specified Range –40 +85 ✻✻°C
Operating Range –40 +125 ✻✻°C
Storage –55 +125 ✻✻°C
Thermal Resistance
θ
JA
8-Pin DIP 100 ✻ °C/W
SO-8 Surface-Mount 150 ✻ °C/W
MSOP-8 Surface-Mount 220 ✻ °C/W
14-Pin DIP 80 ✻ °C/W
SO-14 Surface-Mount 110 ✻ °C/W
✻ Specifications same as OPA234U, E.
NOTES: (1) Wafer-level tested to 95% confidence level. (2) Positive conventional current flows into the input terminals. (3) See
Small-Signal Overshoot vs Load
Capacitance
typical curve.