OPA234 Datasheet, PDF (6/19 Pages) Burr-Brown (TI) – Low Power, Precision SINGLE-SUPPLY OPERATIONAL AMPLIFIERS

TYPICAL CHARACTERISTIC CURVES
At T_A = +25°C and R_L = 10kΩ, unless otherwise noted.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
140
V_S = +2.7V
120
100 ^VS ^{= +5V}
±15V
80
0
C_L = 100pF
–30
–60
φ
60
–90
40
–120
20
V_O = 0.25V
G
–150
0
V_O =
V_S
2
–180
–20
0.1
1
10 100 1k 10k 100k 1M
Frequency (Hz)
POWER-SUPPLY AND COMMON-MODE REJECTION
vs FREQUENCY
120
110
+PSR
100
90
80
CMR
70
60
50
40
30
V_S = +2.7V, +5V
or ±15V
20
10
V_S = +2.7V or +5V
V_S = ±15V
–PSR
0
10
100
1k
10k
100k
1M
Frequency (Hz)
INPUT NOISE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
1k
Current Noise
100
10
1
Voltage Noise
10
100
1k
10k
100k
Frequency (Hz)
INPUT BIAS AND INPUT OFFSET CURRENT
vs TEMPERATURE
–20
V_S = +2.7V, +5V
–15
I_B
V_S = ±15V
–10
–5
I_OS
0
+5
–75 –50 –25 0 25 50 75
Ambient Temperature (°C)
100 125
CHANNEL SEPARATION vs FREQUENCY
160
R_L = 10kΩ
140
120
Dual and quad devices.
G = 1, all channels.
100 ^{Quad measured channel}
A to D or B to C—other
combinations yield improved
rejection.
80
10
100
1k
10k
Frequency (Hz)
100k
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
–17
–16
V_S = +5V
–15
V_S = +2.7V
–14
–13
–12
V_S = ±15V
–11
–10
–15
–10
–5
0
5
10
15
Common-Mode Voltage (V)
6
OPA234, OPA2234, OPA4234
www.ti.com
SBOS055B