Dual, Ultra Low Power, Rail to Rail Out, Negative Rail In, VFB Amplifier - OPA2835

OPA2835 (ACTIVE)

Dual, 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

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Parametrics Compare all products in High-Speed Op Amps (>=50MHz)

 
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 1kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (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
OPA2835 OPA2836 OPA2836-Q1 OPA835 OPA836 OPA837 OPA838 THS4281
Bipolar
Voltage FB   
Bipolar
Voltage FB   
Bipolar
Voltage FB   
Bipolar
Voltage FB   
Bipolar
Voltage FB   
Voltage FB    Bipolar
Voltage FB   
Bipolar
Voltage FB   
2    2    2    1    1    1    1    1   
2.5    2.5    2.5    2.5    2.5    2.7    2.7    2.7   
5.5    5.5    5.5    5.5    5.5    5.4    5.4    16.5   
56    205    205    56    205    105    90    95   
1    1    1    1    1    1    6    1   
160    560    560    160    560    105    350    35   
9.3    4.6    4.6    9.3    4.6    4.7    1.8    12.5   
10    4.6    5    9.3    4.6    4.7    1.8    12.5   
0.25    1    1    0.25    1    0.592    0.96    0.8   
0.5    0.4    0.4    0.5    0.4    0.13    0.125    2.5   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In to V-
Out   
In
Out   
Shutdown    Shutdown      Shutdown    Shutdown    Shutdown    Shutdown    N/A   
Catalog    Catalog    Automotive    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85   
QFN
SOIC
UQFN
VSSOP   
QFN
SOIC
UQFN
VSSOP   
VSSOP    QFN
SOT-23   
QFN
SOT-23   
SC70
SOT-23   
SC70
SC70
SOT-23   
SOIC
SOT-23
VSSOP   
10QFN: 4 mm2: 2 x 2(QFN)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
10UQFN: 4 mm2: 2 x 2(UQFN)
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
10QFN: 4 mm2: 2 x 2(QFN)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
10UQFN: 4 mm2: 2 x 2(UQFN)
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    10QFN: 4 mm2: 2 x 2(QFN)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
10QFN: 4 mm2: 2 x 2(QFN)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
5SC70: 4 mm2: 2.1 x 2(SC70)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
5SC70: 4 mm2: 2.1 x 2(SC70)
6SC70: 4 mm2: 2.1 x 2(SC70)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
113    116    116    113    116    110    105    107   
400000    1000000    1000000    400000    1000000    520000    4400000    800000   
2.25    1.1    1.1    2.25    1.1    0.4    0.4    7   
30    120    110    30    120    50    300    95   
40    50    50    40    50    50    20    30   
70    85    85    70    85    120    -110    69   
73    79    79    73    79    145    -120    76   
1    1    1    1    1    0.1    1    1   

Featured tools and software

WEBENCH® Designer OPA2835

Amplifier Topology
 Non-inverting
 Inverting
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 2.5 to 5.5 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 125.0 °C