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PDF OPA727 Data sheet ( Hoja de datos )
| Número de pieza | OPA727 | |
| Descripción | (OPA727 - OPA728) High Precision CMOS Operational Amplifier | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de OPA727 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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OPA727, OPA2727
OPA4727, OPA728
SBOS314B − SEPTEMBER 2004 − REVISED DECEMBER 2004
e-trim 20MHz, High Precision CMOS
Operational Amplifier
FEATURES
D OFFSET: 15µV (typ), 150µV (max)
D DRIFT: 0.3µV/°C (typ), 1.5µV/°C (max)
D BANDWIDTH: 20MHz
D SLEW RATE: 30V/µs
D BIAS CURRENT: 100pA (max)
D LOW NOISE: 6nV/√Hz at 100kHz
D THD+N: 0.0003% at 1kHz
D QUIESCENT CURRENT: 4.3mA/ch
D SUPPLY VOLTAGE: 4V to 12V
D SHUTDOWN MODE (OPA728): 6µA
APPLICATIONS
D OPTICAL NETWORKING
D TRANSIMPEDANCE AMPLIFIERS
D INTEGRATORS
D ACTIVE FILTERS
D A/D CONVERTER DRIVERS
D I/V CONVERTER FOR DACs
D HIGH PERFORMANCE AUDIO
D PROCESS CONTROL
D TEST EQUIPMENT
OPAx727 AND OPAx728 RELATED PRODUCTS
FEATURES
PRODUCT
20MHz, 3mV, 4µV/°C
(non-etrim version of OPA727)
20MHz, 3mV, 4µV/°C, Shutdown
(non-etrim version of OPA728)
OPA725
OPA726
+12V
λ
OPA727
VOUT
DESCRIPTION
The OPA727 and OPA728 series op amps use a
state-of-the-art 12V analog CMOS process and e-trim, a
package-level trim, offering outstanding dc precision and
ac performance. The extremely low offset (150µV max)
and drift (1.5µV/°C) are achieved by trimming the IC
digitally after packaging to avoid the shift in parameters as
a result of stresses during package assembly. To correct
for offset drift, the OPA727/OPA728 family is trimmed over
temperature. The devices feature very high CMRR and
open loop gain to minimize errors.
Excellent ac characteristics, such as 20MHz GBW, 30V/µs
slew rate and 0.0003% THD+N make the OPA727 and
OPA728 well-suited for communication, high-end audio,
and active filter applications. With a bias current of less
than 100pA, they are ideal for use as transimpedance
(I/V-conversion) amplifiers for monitoring optical power in
ONET applications.
Optimized for single-supply operation up to 12V, the input
common-mode range extends to GND for true
single-supply functionality. The output swings to within
150mV of the rails, maximizing dynamic range. The low
quiescent current of 4.3mA makes it well-suited for use in
battery-operated equipment. The OPA728 shutdown
version reduces the quiescent current to typically 6µA and
features a reference pin for easy shutdown operation with
standard CMOS logic in dual-supply applications.
For ease of use, the OPA727 and OPA728 op amp families
are fully specified and tested over the supply range of 4V
to 12V. The OPA727 (single) and OPA728 (single with
shutdown) are available in MSOP-8 and DFN-8; the
OPA2727 (dual) is available in DFN-8 and SO-8, and the
quad version OPA4727 will be available Q1’05 in
TSSOP-14. All versions are specified for operation from
−40°C to +125°C.
−VB
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.
e-trim is a trademark of Texas Instruments, Incorporated. All other 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 2004, Texas Instruments Incorporated
www.ti.com
1 page  
www.ti.com
OPA727, OPA2727
OPA4727, OPA728
SBOS314B − SEPTEMBER 2004 − REVISED DECEMBER 2004
ELECTRICAL CHARACTERISTICS: VS = +4V to +12V or VS = ±2V to ±6V (continued)
Boldface limits apply over the specified temperature range, TA = −40°C to +125°C.
At TA = +25°C, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.
OPA727, OPA728, OPA2727
PARAMETER
CONDITIONS
MIN TYP MAX
OUTPUT
Voltage Output Swing from Rail
OPA727, OPA728
Over Temperature
OPA2727
Over Temperature
OPA727, OPA728
Over Temperature
OPA2727
Over Temperature
Output Current
Short-Circuit Current
Capacitive Load Drive
Open-Loop Output Impedance
IOUT
ISC
CLOAD
ENABLE/SHUTDOWN (OPA728)
tOFF
tON
Enable Reference (Ref Pin) Voltage Range
VL (amplifier is disabled)
VH (amplifier is enabled)
Input Bias Current of Enable Pin
IQSD
POWER SUPPLY
Specified Voltage Range
Operating Voltage Range
Quiescent Current (per amplifier)
Over Temperature
VS
VS
IQ
RL = 100kΩ, AOL > 110dB
RL = 100kΩ, AOL > 100dB
RL = 100kΩ, AOL > 110dB
RL = 100kΩ, AOL > 100dB
RL = 1kΩ, AOL > 106dB
RL = 1kΩ, AOL > 96dB
RL = 2kΩ, AOL = 106dB
RL = 2kΩ, AOL = 96dB
VS − VOUT < 1V
f = 1MHz, IO = 0
Amplifier Disabled
IO = 0
100 150
150
125 175
175
200 250
250
200 250
500
40
±55
See Typical Characteristics
40
V−
> VDGND +2V
5
80
(V+) − 2
< VDGND+0.8V
5
6 15
4 12
3.5 to 13.2
4.3 6.5
6.5
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
MSOP-8, SO-8
TSSOP-14
DFN-8
qJA
−40 +125
−55 +125
−55 +150
150
100
46
UNIT
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
Ω
µs
µs
V
V
V
pA
µA
V
V
mA
mA
°C
°C
°C
°C/W
°C/W
°C/W
5
5 Page 
www.ti.com
APPLICATIONS INFORMATION
The OPA727 and OPA728 family of op amps use e-trim,
an adjustment to offset voltage and temperature drift made
during the final steps of manufacturing after the plastic
molding is completed. This compensates for performance
shifts that can occur during the molding process. Through
e-trim, the OPA727 and OPA728 deliver excellent offset
voltage (150µV max) and extremely low offset voltage drift
(1.5µV/°C). Additionally, these 20MHz CMOS op amps
have a fast slew rate, low noise, and excellent PSRR,
CMRR, and AOL. They can operate on typically 4.3mA
quiescent current from a single (or split) supply in the range
of 4V to 12V (±2V to ±6V), making them highly versatile
and easy to use. They are stable in a unity-gain
configuration.
Power-supply pins should be bypassed with 1nF ceramic
capacitors in parallel with 1µF tantalum capacitors.
OPERATING VOLTAGE
OPA727 series op amps are specified from 4V to 12V
supplies over a temperature range of −40°C to +125°C.
They will operate well in ±5V or +5V to +12V power-supply
systems. Parameters that vary significantly with operating
voltage or temperature are shown in the Typical
Characteristics.
ENABLE/SHUTDOWN
OPA727 series op amps require approximately 4.3mA
quiescent current. The enable/shutdown feature of the
OPA728 allows the op amp to be shut off to reduce this
current to approximately 6µA.
The enable/shutdown input is referenced to the Enable
Reference Pin, DGND (see Pin Configurations). This pin
can be connected to logic ground in dual-supply op amp
configurations to avoid level-shifting the enable logic
signal, as shown in Figure 1.
The Enable Reference Pin voltage, VDGND, must not
exceed (V+) − 2V. It may be set as low as V−. The amplifier
is enabled when the Enable Pin voltage is greater than
VDGND + 2V. The amplifier is disabled (shutdown) if the
Enable Pin voltage is less than VDGND + 0.8V. The Enable
Pin is connected to internal pull-up circuitry and will enable
the device if left unconnected.
COMMON-MODE VOLTAGE RANGE
The input common-mode voltage range of the OPA727
and OPA728 series extends from V− to (V+) − 2.5V.
Common-mode rejection is excellent throughout the input
voltage range from V− to (V+) − 3V. CMRR decreases
somewhat as the common-mode voltage extends to
(V+) − 2.5V, but remains very good and is tested
throughout this range. See the Electrical Characteristics
table for details.
OPA727, OPA2727
OPA4727, OPA728
SBOS314B − SEPTEMBER 2004 − REVISED DECEMBER 2004
a) Single−Supply Configuration
Digital
Logic
Enable +12V
OPA728
Ref
DGND
VO
b) Dual−Supply Configuration
Digital
Logic
Enable +5V
OPA728
Ref
DGND −5V
VO
Figure 1. Enable Reference Pin Connection for
Single- and Dual-Supply Configurations
INPUT OVER-VOLTAGE PROTECTION
Device inputs are protected by ESD diodes that will
conduct if the input voltages exceed the power supplies by
more than approximately 300mV. Momentary voltages
greater than 300mV beyond the power supply can be
tolerated if the current is limited to 10mA. This is easily
accomplished with an input resistor in series with the op
amp, as shown in Figure 2. The OPA727 series features
no phase inversion when the inputs extend beyond
supplies, if the input is current limited.
IOVERLOAD
10mA max
R
VIN
V+
OPA 72 7
V−
VOUT
Figure 2. Input Current Protection for Voltages
Exceeding the Supply Voltage
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet OPA727.PDF ] | |
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