OPA835
OPA2835
www.ti.com
SLOS713D –JANUARY 2011–REVISED OCTOBER 2011
Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp
Check for Samples: OPA835, OPA2835
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FEATURES
DESCRIPTION
Fabricated using the industry-leading BiCom-3x
(SiGe complimentary bipolar) process, the OPA835
and OPA2835 are single and dual ultra low-power,
rail-to-rail output, negative rail input, voltage-feedback
operational amplifiers designed to operate over a
power supply range of 2.5 V to 5.5 V Single Supply
and ±1.25 V to ±2.75 V dual supply. Consuming only
250 µA per channel and a unity gain bandwidth of
56MHz, these amplifiers set an industry leading
power-to-performance ratio for rail-to-rail amplifiers.
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Ultra Low Power
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Supply Voltage: 2.5 V to 5.5 V
Quiescent Current: 250 µA (typ)
Power Down Mode: 0.5 µA (typ)
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Bandwidth: 56 MHz
Slew Rate: 160 V/µs
Rise Time: 10 ns (2 VSTEP
)
Settling Time: 45 ns (2VSTEP
)
For battery powered portable applications where
power is of key importance, the OPA835's and
OPA2835's low power consumption and high
frequency performance offers designers performance
versus power not attainable in other devices. Coupled
with a power savings mode to reduce current to <1.5
μA, the device offers an attractive solution for high
frequency amplifiers in battery powered applications.
Overdrive Recovery Time: 195ns
SNR: 0.00015% (–116.4dBc) at 1 kHz (1V RMS
)
THD: 0.00003% (–130 dBc) at 1 kHz (1 VRMS
)
HD2/HD3: –70 dBc/–73 dBc at 1 MHz (2 Vpp)
Input Voltage Noise: 9.3 nV/rtHz (f = 100 kHz)
Input Offset Voltage: 100 µV (500 µV max)
CMRR: 113 dB
The OPA835 and OPA2835 are offered in following
package options:
Output Current Drive: 40 mA
RRO – Rail-to-Rail Output
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OPA835 Single: SOT23-6 (DBV), and 10 pin
WQFN (RUN) with integrated gain resistors.
Input Voltage Range: –0.2 V to 3.9 V
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OPA2835 Dual: SOIC-8 (D), VSSOP (MSOP) -10
(DGS), and 10 pin WQFN (RUN).
(5 V supply)
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Operating Temperature Range:
–40°C–125°C
The OPA835 RUN package option includes
integrated gain setting resistors for smallest possible
footprint on a printed circuit board (≈ 2mm x 2mm).
By adding circuit traces on the PCB, gains of +1, -1,
-1.33, +2, +2.33, -3, +4, -4, +5, -5.33, +6.33, -7, +8
and inverting attenuations of -0.1429, -0.1875, -0.25,
-0.33, -0.75 can be achieved. See Application
Information section for details.
APPLICATIONS
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Low Power Signal Conditioning
Audio ADC Input Buffer
Low Power SAR and ΔΣ ADC Driver
Portable Systems
The devices are characterized for operation over the
extended industrial temperature range –40°C to
125°C.
Low Power Systems
High Density Systems
Ultrasonic Flow Meter
OPA835 Related Products
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2.7V
DESCRIPTION
SINGLES
DUALS
OPA2830
OPA2836
TRIPLES
QUADS
OPA4830
—
VSIG
VSIG
-20
2.7V
VS+
0V
1.35V
100
2.2nF
4.02k
4.02k
Rail-to-Rail
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—
—
5V
2.5V
REF
2k
VIN
-40
-60
VDD
OPA835
VS-
+In
Rail-to-Rail, Low
Power
OPA836
ADS8326
-In
2k
2k
Rail-to-Rail, Fixed
Gain
OPA832
OPA690
OPA820
OPA2832 OPA3832
OPA2690 OPA3690
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—
-80
-100
-120
-140
General-Purpose, High
Slew Rate
Low-Noise, DC
Precision
OPA2822
—
OPA4820
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20,000
40,000
60,000
80,000
100,000
120,000
Frequency (Hz)
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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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated