OPA835 Amp Datasheet

OPA835 Datasheet PDF, Equivalent


Part Number

OPA835

Description

VFB Op Amp

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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OPA835
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OPA835, OPA2835
SLOS713I – JANUARY 2011 – REVISED AUGUST 2016
OPAx835 Ultra-Low-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 (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
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 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. 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
VS = 5 V,
-40 G = 1,
-50 VOUT = 2 Vpp,
RF = 0 W,
-60 RL = 2 kW
-70
-80
-90
-100
-110
-120
-130
HD2
HD3
-140
10k
100k
1M
f - Frequency - Hz
10M
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.

OPA835
OPA835, OPA2835
SLOS713I – JANUARY 2011 – REVISED AUGUST 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 OPA835-Related Devices ...................................... 5
6 Pin Configuration and Functions ......................... 5
7 Specifications......................................................... 7
7.1 Absolute Maximum Ratings ...................................... 7
7.2 ESD Ratings.............................................................. 7
7.3 Recommended Operating Conditions....................... 7
7.4 Thermal Information: OPA835 ................................. 7
7.5 Thermal Information: OPA2835 ................................ 7
7.6 Electrical Characteristics: VS = 2.7 V........................ 8
7.7 Electrical Characteristics: VS = 5 V......................... 10
7.8 Typical Characteristics: VS = 2.7 V ......................... 13
7.9 Typical Characteristics: VS = 5 V ............................ 19
8 Detailed Description ............................................ 25
8.1 Overview ................................................................. 25
8.2 Functional Block Diagram ....................................... 25
8.3 Feature Description................................................. 25
8.4 Device Functional Modes........................................ 28
9 Application and Implementation ........................ 31
9.1 Application Information............................................ 31
9.2 Typical Application .................................................. 37
10 Power Supply Recommendations ..................... 41
11 Layout................................................................... 41
11.1 Layout Guidelines ................................................. 41
11.2 Layout Example .................................................... 42
12 Device and Documentation Support ................. 43
12.1 Device Support .................................................... 43
12.2 Documentation Support ........................................ 43
12.3 Trademarks ........................................................... 43
12.4 Electrostatic Discharge Caution ............................ 43
12.5 Glossary ................................................................ 43
13 Mechanical, Packaging, and Orderable
Information ........................................................... 44
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision H (November 2015) to Revision I
Page
• Reformatted table note on Thermal Information: OPA835 and Thermal Information: OPA2835 tables ............................... 7
• Deleted the word "linear" from output voltage low, output voltage high, and output current drive parameters in
Electrical Characteristics: VS = 2.7 V table ............................................................................................................................ 9
• Changed Current noise 1/f corner frequency parameter units from Hz to kHz in Electrical Characteristics: VS = 5 V
table ..................................................................................................................................................................................... 11
• Deleted the word "linear" from output voltage low, output voltage high, and output current drive parameters in
Electrical Characteristics: VS = 5 V table ............................................................................................................................. 12
• Reformatted Development Support section ......................................................................................................................... 43
• Reformatted Related Documentation section ...................................................................................................................... 43
Changes from Revision F (June 2015) to Revision G
Page
• Moved all switching parameters from the Switching Characteristics: VS = 2.7 V back into the Electrical
Characteristics: VS = 2.7 V table ........................................................................................................................................... 8
• Moved all switching parameters from the Switching Characteristics: VS = 5 V table back into the Electrical
Characteristics: VS = 5 V table ............................................................................................................................................ 10
Changes from Revision E (July 2013) to Revision F
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Switching Characteristics tables, Feature
Description section, Device Functional Modes, Application and Implementation section, Power Supply
Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,
Packaging, and Orderable Information section ..................................................................................................................... 1
• Moved the switching parameters from the Electrical Characteristics tables into Switching Characteristics tables. ............ 11
2 Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
Product Folder Links: OPA835 OPA2835


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA835, OPA2835 SLOS713I – JANUARY 2011 – REVISED AUGUST 2016 O PAx835 Ultra-Low-Power, Rail-to-Rail Ou t, Negative Rail In, VFB Op Amp 1 Feat ures •1 Ultra-Low Power – Supply Vo ltage: 2.5 V to 5.5 V – Quiescent Cur rent: 250 µA/ch (Typical) – Power Do wn Mode: 0.5 µA (Typical) • Bandwidt h: 56 MHz (AV = 1 V/V) • Slew Rate: 1 60 V/µs • Rise Time: 10 ns (2 VSTEP) • Settling Time (0.1%): 55 ns (2 VST EP) • 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) • I nput Voltage Noise: 9.3 nV/√Hz (f = 1 00 kHz) • Input Offset Voltage: 100 V (±500-µV Maximum) • CMRR: 113 dB • Output Current Drive: 40 mA • RR O: Rail-to-Rail Output • Input Voltag e 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 •.
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