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PDF OPA2734 Data sheet ( Hoja de datos )

Número de pieza OPA2734
Descripción (OPA2734 / OPA2735) SINGLE-SUPPLY CMOS OPERATIONAL AMPLIFIERS
Fabricantes Burr-Brown 
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No Preview Available ! OPA2734 Hoja de datos, Descripción, Manual

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OPA734, OPA2734
OPA735, OPA2735
SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005
0.05µV/°C max, SINGLE-SUPPLY CMOS
OPERATIONAL AMPLIFIERS
Zer-Drift Series
FEATURES
D LOW OFFSET VOLTAGE: 5µV (max)
D ZERO DRIFT: 0.05µV/°C max
D QUIESCENT CURRENT: 750µA (max)
D SINGLE-SUPPLY OPERATION
D LOW BIAS CURRENT: 200pA (max)
D SHUTDOWN
D MicroSIZE PACKAGES
D WIDE SUPPLY RANGE: 2.7V to 12V
APPLICATIONS
D TRANSDUCER APPLICATIONS
D TEMPERATURE MEASUREMENTS
D ELECTRONIC SCALES
D MEDICAL INSTRUMENTATION
D BATTERY-POWERED INSTRUMENTS
D HANDHELD TEST EQUIPMENT
VREF = 15V
REF102
10V
DESCRIPTION
The OPA734 and OPA735 series of CMOS operational
amplifiers use auto-zeroing techniques to simultaneously
provide low offset voltage (5µV max) and near-zero drift
over time and temperature. These miniature, high-preci-
sion, low quiescent current amplifiers offer high input
impedance and rail-to-rail output swing within 50mV of the
rails. Either single or bipolar supplies can be used in the
range of +2.7V to +12V (±1.35V to ±6V). They are
optimized for low-voltage, single-supply operation.
The OPA734 family includes a shutdown mode. Under
logic control, the amplifiers can be switched from normal
operation to a standby current that is 9µA (max) and the
output placed in a high-impedance state.
The single version is available in the MicroSIZE SOT23-5
(SOT23-6 for shutdown version) and the SO-8 packages.
The dual version is available in the MSOP-8 and SO-8
packages (MSOP-10 only for the shutdown version). All
versions are specified for operation from −40°C to +85°C.
G
=
1
+2
R3
RG
R1
1k
C1
1nF
C2
10nF
RG
1/2
O P A 27 3 5
R3
10k
C4
1nF
C4
1nF
R3
10k
R2
1k
C3
1nF
1/2
O P A 27 3 5
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright 2003-2005, Texas Instruments Incorporated
www.ti.com

1 page




OPA2734 pdf
www.ti.com
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = ±5V (same as +10V).
OUTPUT VOLTAGE PRODUCTION DISTRIBUTION
OPA734, OPA2734
OPA735, OPA2735
SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005
OUTPUT VOLTAGE DRIFT PRODUCTION DISTRIBUTION
Absolute Value;
Centered Around Zero
Offset Voltage (µV)
6
4
2
0
2
4
6
0
OUTPUT VOLTAGE SWING TO RAIL
vs OUTPUT CURRENT
+85_ C
+25_C
40_C
5 10 15 20 25 30 35
Output Current (mA)
1000
800
INPUT BIAS CURRENT vs TEMPERATURE
VCM = VS/2
600
+IB
400
200
0
200
400
600
IB
10 Representative Units
800
1000
50
25
0 25 50 75 85 100
Temperature (_ C)
125
Offset Voltage Drift (µV/_ C)
1000
INPUT BIAS CURRENT vs TEMPERATURE
0
1000
2000
IB +IB
3000
4000
5000
6000
10 Representative Units
7000
8000
9000
10000
VCM = V
50 25
0
25 50 75 85 100
Temperature (_C)
125
SUPPLY CURRENT vs TEMPERATURE
800
600 ±6V
400 ±1.35V
200
0
50
25
0 25 50 75
Temperature (_ C)
100 125
5

5 Page





OPA2734 arduino
www.ti.com
OPA734, OPA2734
OPA735, OPA2735
SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005
R1
536k
R1
536k
C3
10nF
+5V
OPA735
5V
VOUT
R3
268k
C1 C2
5nF 5nF
fn =
2
1
π RC
;
where
R = R1
C = C1
=
=
R2
C2
=
=
2R3
C3/2
(fn = 60Hz for values shown)
Figure 6. Twin-T Notch Filter
C2
68.0nF
R1
10.6k
VIN
1/2
O P A2 735
C1
15.0nF
R2
2.64k
R3
20.8k
C3
6.80nF
1/2
O PA 2735
Cutoff frequency = 2kHz for values shown.
VOUT
NOTE: FilterPro is a low-pass filter design program available for download at no cost from TI’s web site (www.ti.com).
The program can be used to easily determine component values for other cutoff frequencies or filter types.
Figure 7. High DC Accuracy, 3-Pole Low-Pass Filter
R1 = 10 k
C1
1nF
R2
10 k
R3
10 k
1/2
O P A 27 35
VIN
C1
1nF
D1
1/2
O P A 27 35
VOUT
NOTE: Dynamic range of the circuit is not reduced by
the diode voltage drop since the diode is not in the signal path.
Application Bulletin Precision Absolute Value Circuits (SBOA068)
is available at www.ti.com and provides further information about rectifier circuits.
Figure 8. Precision Full-Wave Rectifier with Full Dynamic Range
11

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