OPA725, OPA2725
OPA726, OPA2726
SBOS278B − SEPTEMBER 2003 − REVISED JANUARY 2004
Very Low Noise, High-Speed, 12V CMOS
Operational Amplifier
FD EATURES
DESCRIPTION
The OPA725 and OPA726 series op amps use a
state-of-the-art 12V analog CMOS process, and combine
outstanding ac performance with low bias current and
excellent CMRR, PSRR, and AOL
Gain-Bandwidth (GBW) Product is achieved by using a
proprietary and patent-pending output stage design.
These characteristics allow excellent 16-bit settling times
for driving 16-bit Analog-to-Digital converters (ADCs).
BANDWIDTH: 20MHz
SLEW RATE: 30V/µs
D
D
D
D
D
D
D
D
D
D
FAST 16-BIT SETTLING TIME
LOW NOISE: 6nV/√Hz (typ) at 100kHz
EXCELLENT CMRR, PSRR, and A
OL
RAIL-TO-RAIL OUTPUT
.
The 20MHz
CM RANGE INCLUDES GND
THD+N: 0.0003% (typ) at 1kHz
QUIESCENT CURRENT: 5.5mA/ch (max)
SUPPLY VOLTAGE: 4V to 12V
SHUTDOWN MODE (OPAx726): 6µA/ch
Excellent ac characteristics, such as 20MHz GBW, 30V/µs
slew rate and 0.0003% THD+N make the OPA725 and
OPA726 well-suited for communication, high-end audio,
and active filter applications. With a bias current of less
than 200pA, they are well-suited for use as
transimpedance (I/V-conversion) amplifiers for monitoring
optical power in ONET applications.
AD PPLICATIONS
OPTICAL NETWORKING
D
D
D
D
D
D
D
D
TRANSIMPEDANCE AMPLIFIERS
INTEGRATORS
ACTIVE FILTERS
A/D CONVERTER BUFFERS
I/V CONVERTER FOR DACs
PORTABLE AUDIO
PROCESS CONTROL
TEST EQUIPMENT
The OPA725 and OPA726 op amps can be used in
single-supply applications from 4V up to 12V, or
dual-supply from 2V to 6V. The output swings to within
150mV of the rails, maximizing dynamic range. The
shutdown versions (OPAx726) reduce the quiescent
current to less than 6µA and feature a reference pin for
easy shutdown operation with standard CMOS logic in
dual-supply applications.
OPA725 RELATED PRODUCTS
FEATURES
The OPA725 (single) is available in SOT23-5 and SO-8
packages, and the OPA2725 (dual) is available in MSOP-8
and SO-8 packages. The OPA726 (single with shutdown)
is available in MSOP-8 and SO-8. The OPA2726 (dual with
shutdown) is available in MSOP-10. All versions are
specified for operation from −40°C to +125°C.
PRODUCT
10MHz, 16V, 16V/µs, 8.5nV/√Hz at 1kHz
TLC080
OPA132
OPA380
OPA656
OPA743
ADS8342
8MHz, 36V, FET Input, 20V/µs, 8.5nV/√Hz at 1kHz
100MHz, 5.5V, Precision Transimpedance Amplifier
500MHz, 5V, FET Input, 290V/µs, 7nV/√Hz at 100kHz
7MHz, 12V, RRIO, 10V/µs, 30nV/√Hz at 10kHz
16-Bit, 250kSPS, 4-Channel, Parallel Output ADC
+5V
+5V
+12V
Ω
75
OPA725
AIN
VIN
OPA726
VOUT
ADS8342
16−Bit ADC
Common
λ
2.5V
330pF
−
5V
Enable
−
V
5V
−
B
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