OPA835 Ultra Low Power, Rail to Rail Out, Negative Rail In, VFB Amplifier | TI.com

OPA835 (ACTIVE)

Ultra Low Power, Rail to Rail Out, Negative Rail In, VFB Amplifier

 

Description

The OPA835 and OPA2835 devices (OPAx835) are single and dual ultra-low-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 2.00 mm × 2.00 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.

The OPA835 and OPA2835 devices are characterized for operation over the extended industrial temperature range of –40°C to +125°C.

Features

  • 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 (AV = 1 V/V)
  • Slew Rate: 160 V/µs
  • Rise Time: 10 ns (2 VSTEP)
  • Settling Time (0.1%): 55 ns (2 VSTEP)
  • Overdrive Recovery Time: 200 ns
  • SNR: 0.00015% (–116.4 dBc) at 1 kHz (1 VRMS)
  • 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/√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

Parametrics

Compare all products in High-speed op amps (GBW>=50MHz) Email Download to Excel
Part number Order Architecture Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) CMRR (Typ) (dB) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) GBW (Typ) (MHz) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
OPA835 Order now Bipolar
Voltage FB    
1     2.5     5.5     56     1     160     9.3     9.3     0.25     0.5     In to V-
Out    
Small Size
Shutdown    
Catalog     -40 to 125     QFN | 10
SOT-23 | 6    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
113     400000     2.25     30     40     70     73     1    
OPA836 Order now Bipolar
Voltage FB    
1     2.5     5.5     205     1     560     4.6     4.6     1     0.4     In to V-
Out    
Small Size
Shutdown    
Catalog     -40 to 125     QFN | 10
SOT-23 | 6    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
116     1000000     1.1     120     50     85     79     1    
OPA837 Order now Voltage FB     1     2.7     5.4     105     1     105     4.7     4.7     0.592     0.13     In to V-
Out    
Small Size
Shutdown    
Catalog     -40 to 125     SC70 | 5
SOT-23 | 6    
5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)
6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
110     520000     0.4     50     50     120