OPA234 Datasheet, PDF (9/19 Pages) Burr-Brown (TI) – Low Power, Precision SINGLE-SUPPLY OPERATIONAL AMPLIFIERS

TYPICAL CHARACTERISTIC CURVES (Cont.)
At T_A = +25°C and R_L = 10kΩ, unless otherwise noted.
MAXIMUM OUTPUT VOLTAGE
vs FREQUENCY
30
25
V_S = ±15V
Maximum output voltage
20
without slew-rate induced
distortion.
15
10
5
0
1k
V_S = +5V
V_S = ±2.7V
10k
Frequency (Hz)
100k
QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT
vs TEMPERATURE
525
70
V_S = +2.7V
450
V_S = +5V
60
V_S = +2.7V or +5V
375
V_S = ±15V
50
300
±I_Q
40
225
30
150
20
±I_SC
75
10
0
–75 –50 –25
0 25 50
Temperature (°C)
0
75 100 125
APPLICATIONS INFORMATION
The OPA234 series op amps are unity-gain stable and
suitable for a wide range of general-purpose applications.
Power-supply pins should be bypassed with 10nF ceramic
capacitors.
OPERATING VOLTAGE
The OPA234 series op amps operate from single (+2.7V to
+36V) or dual (±1.35V to ±18V) supplies with excellent
performance. Specifications are production tested with +2.7V,
+5V, and ±15V supplies. Most behavior remains unchanged
throughout the full operating voltage range. Parameters
which vary significantly with operating voltage are shown in
the Typical Characterisitc curves.
OFFSET VOLTAGE TRIM
Offset voltage of the OPA234 series amplifiers is laser
trimmed and usually requires no user adjustment. The
OPA234 (single op amp version) provides offset voltage
trim connections on pins 1 and 5. Offset voltage can be
adjusted by connecting a potentiometer, as shown in Fig-
ure 1. This adjustment should be used only to null the offset
of the op amp, not to adjust system offset or offset pro-
duced by the signal source. Nulling offset could degrade
the offset drift behavior of the op amp. While it is not
possible to predict the exact change in drift, the effect is
usually small.
V+
10nF
OPA234 single op amp only.
7
2
Use offset adjust pins only to null
offset voltage of op amp—see text.
6
3
OPA234
5
1
10nF ⁴ 100kΩ
Trim Range: ±4mV typ
(V–) = 0V for single supply operation.
V–
FIGURE 1. OPA234 Offset Voltage Trim Circuit.
OPA234, OPA2234, OPA4234
9
SBOS055B
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