OPA835_16 Datasheet, PDF (1/57 Pages) Texas Instruments – Ultralow-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
OPA835, OPA2835
SLOS713H – JANUARY 2011 – REVISED NOVEMBER 2015
OPAx835 Ultralow-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp
1 Features
•1 Ultra Low Power
– Supply Voltage: 2.5 V to 5.5 V
– Quiescent Current: 250 µA/ch (Typical)
– Power Down Mode: 0.5 µA (Typical)
• Bandwidth: 56 MHz (A_V = 1 V/V)
• Slew Rate: 160 V/µs
• Rise Time: 10 ns (2 V_STEP)
• Settling Time (0.1%): 55 ns (2 V_STEP)
• Overdrive Recovery Time: 200 ns
• SNR: 0.00015% (–116.4 dBc) 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 Maximum)
• 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 to 125°C
2 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
3 Description
The OPA835 and OPA2835 devices (OPAx835) are
single and dual ultralow-power, rail-to-rail output,
negative-rail input, voltage-feedback (VFB)
operational amplifiers designed to operate over a
power supply range of 2.5-V to 5.5-V with a single
supply, or ±1.25-V to ±2.75-V with a dual supply.
Consuming only 250 µA per channel and with a unity
gain bandwidth of 56 MHz, these amplifiers set an
industry-leading performance-to-power ratio for rail-
to-rail amplifiers.
For battery-powered, portable applications where
power is of key importance, the low power
consumption and high-frequency performance of the
OPA835 and OPA2835 devices offers performance
versus power that is not attainable in other devices.
Coupled with a power-savings mode to reduce
current to < 1.5 μA, these devices offer an attractive
solution for high-frequency amplifiers in battery-
powered applications.
The OPA835 RUN package option includes
integrated gain setting resistors for the smallest
possible footprint on a printed-circuit-board
(approximately 2 mm × 2 mm). 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 Table 3 and Table 4 for details.
The OPA835 and OPA2835 devices are
characterized for operation over the extended
industrial temperature range of –40°C to +125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
OPA835
SOT-23 (6)
QFN (10)
2.90 mm × 1.60 mm
2.00 mm × 2.00 mm
SOIC (8)
4.90 mm × 3.91 mm
OPA2835
VSSOP (10)
UQFN (10)
3.00 mm × 3.00 mm
2.00 mm × 2.00 mm
QFN (10)
2.00 mm × 2.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Harmonic Distortion vs Frequency
-30
V_S = 5 V,
-40 _{G = 1,}
-50 ^{VOUT = 2 Vpp,}
R_F = 0 W,
-60 R_L = 2 kW
-70
-80
-90
-100
-110
-120
-130
HD₂
HD₃
-140
10k
100k
1M
10M
f - Frequency - Hz
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.