OPA2835 Datasheet, PDF (1/53 Pages) National Semiconductor (TI) – Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp

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OPA835
OPA2835
SLOS713E – JANUARY 2011 – REVISED JULY 2013
Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp
Check for Samples: OPA835, OPA2835
FEATURES
1
• Ultra Low Power
– Supply Voltage: 2.5 V to 5.5 V
– Quiescent Current: 250 µA (typ)
– Power Down Mode: 0.5 µA (typ)
• Bandwidth: 56 MHz
• Slew Rate: 160 V/µs
• Rise Time: 10 ns (2 V_STEP)
• Settling Time: 45 ns (2V_STEP)
• Overdrive Recovery Time: 195 ns
• SNR: 0.00015% (–116.4dBc) at 1 kHz (1 V_RMS)
• THD: 0.00003% (–130 dBc) at 1 kHz (1 V_RMS)
• HD₂/HD₃: –70 dBc/–73 dBc at 1 MHz (2 V_PP)
• Input Voltage Noise: 9.3 nV/√Hz (f = 100 kHz)
• Input Offset Voltage: 100 µV (500 µV max)
• CMRR: 113 dB
• Output Current Drive: 40 mA
• RRO – Rail-to-Rail Output
• Input Voltage Range: –0.2 V to 3.9 V
(5 V supply)
• Operating Temperature Range:
–40°C–125°C
APPLICATIONS
• Low Power Signal Conditioning
• Audio ADC Input Buffer
• Low Power SAR and ΔΣ ADC Driver
• Portable Systems
• Low Power Systems
• High Density Systems
• Ultrasonic Flow Meter
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 56
MHz, these amplifiers set an industry leading power-
to-performance ratio for rail-to-rail amplifiers.
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.
The OPA835 and OPA2835 are offered in following
package options:
• OPA835 Single: SOT23-6 (DBV), and 10 pin
WQFN (RUN) with integrated gain resistors.
• OPA2835 Dual: SOIC-8 (D), VSSOP (MSOP) -10
(DGS), 10 pin WQFN (RUN), and 10 pin UQFN
(RMC).
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.
The devices are characterized for operation over the
extended industrial temperature range –40°C to
125°C.
0
-20
-40
-60
-80
-100
-120
-140
0
VSIG
0V
VIN
2.7V
4.02k
2k
4.02k
2.7V
VS+
OPA835
VS-
VSIG
1.35V
100
2.2nF
2k
2k
5V 2.5V
+In VDD REF
ADS8326
-In
20,000
40,000 60,000 80,000
Frequency (Hz)
100,000 120,000
OPA835 Related Products
DESCRIPTION
SINGLES DUALS TRIPLES
Rail-to-Rail
—
OPA2830
—
Rail-to-Rail, Low
Power
OPA836 OPA2836
—
Rail-to-Rail, Fixed
Gain
OPA832 OPA2832 OPA3832
General-Purpose, High OPA690 OPA2690 OPA3690
Slew Rate
Low-Noise, DC
Precision
OPA820 OPA2822
—
QUADS
OPA4830
—
—
—
OPA4820
1
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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.
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