OPA837 Amp Datasheet

OPA837 Datasheet PDF, Equivalent


Part Number

OPA837

Description

Voltage-Feedback Op Amp

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download OPA837 Datasheet


OPA837
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
OPA837, OPA2837
SBOS673D – SEPTEMBER 2017 – REVISED DECEMBER 2018
OPAx837 Low-Power, Precision, 105-MHz, Voltage-Feedback Op Amp
1 Features
1 Bandwidth: 105 MHz (AV = 1 V/V)
• Very Low (Trimmed) Supply Current: 600 µA
• Gain Bandwidth Product: 50 MHz
• Slew Rate: 105 V/µs
• Negative Rail Input, Rail-to-Rail Output
• Single-Supply Operating Range: 2.7 V to 5.4 V
• 25°C Input Offset: ±130 µV (Max)
• Input Offset Voltage Drift (DCK Package):
< ±1.6 µV/°C (Maximum)
• Input Voltage Noise: 4.7 nV/Hz (> 100 Hz)
• HD2: –120 dBc at 2 VPP, 100 kHz
• HD3: –145 dBc at 2 VPP, 100 kHz
• Settling Time: 35 ns, 0.5-V Step to 0.1%
• 5-µA Shutdown Current With Fast Recovery From
Shutdown for Power Scaling Applications
2 Applications
• 12-Bit to 16-Bit, Low-Power SAR Drivers
• Precision ADC Reference Buffers
• Very-Low-Power Active Filters
• Low-Power Transimpedance Amplifiers
• Sensor Signal Conditioning
• Wearable Devices
• Low-Side Current Sensing
Low-Power, Low-Noise, Precision, Single-Ended
SAR ADC Driver With True Ground Input and
Output Range
+ 5.0 V
REF5040
4.096 V
+VCC
0V
0 V 3.8 V
Gain = 1.05
V/V
+ PD
OPA837
±
±VCC
499 Ÿ
GND
4.0 V
22 Ÿ
2.2 nF
22 Ÿ
10.0 kŸ
GND
3.3 V
ADS8860
16-Bit SAR
1 MSPS
GND
3 Description
The OPA837 and OPA2837 are single- and dual-
channel unity-gain stable, voltage-feedback amplifiers
that provide among the highest MHz per mW of
bandwidth versus power among precision op amps.
Using only 600 µA per channel on a single 5-V
supply, these 3.0-mW devices deliver 105-MHz
bandwidth at a gain of 1 V/V. The very low trimmed
offset voltage of ±130 µV (maximum) comes with a
typical (±1σ) drift of ±0.4 µV/°C.
Ideally suited to single-ended, successive-
approximation register (SAR) analog-to-digital-
converter (ADC) driving applications, the OPAx837
provides one of the lowest input spot noise levels at
4.7 nV/Hz for the 3-mW quiescent power. The very
high 50-MHz gain bandwidth product provides the low
output impedance to high frequencies required to
supply the fast charging currents in SAR ADC driver
applications. This low dynamic output impedance is
also suitable for reference buffer applications with
precision ADCs. The single-channel OPA837 is
available in a 6-pin SOT-23 package (that includes a
power shutdown feature) and a 5-pin SC70 package
whereas the dual-channel OPA2837 is available in an
8-pin VSSOP package and a 10-pin WQFN package.
The OPAx837 is characterized for operation over the
a wide temperature range of –40°C to +125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
OPA837
SOT-23 (6)
SC70 (5)
2.90 mm × 1.60 mm
2.00 mm × 1.25 mm
OPA2837
VSSOP (8)
WQFN (10)
3.00 mm × 3.00 mm
2.00 mm × 2.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
GND
± 0.23 V LM7705
+ 3.3 V
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.

OPA837
OPA837, OPA2837
SBOS673D – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information: OPA837 .................................. 6
6.5 Thermal Information: OPA2837 ................................ 6
6.6 Electrical Characteristics: VS = 5 V........................... 7
6.7 Electrical Characteristics: VS = 3 V........................... 9
6.8 Typical Characteristics: VS = 5.0 V ......................... 11
6.9 Typical Characteristics: VS = 3.0 V ......................... 14
6.10 Typical Characteristics: ±2.5-V to ±1.5-V Split
Supply ...................................................................... 17
7 Detailed Description ............................................ 22
7.1 Overview ................................................................. 22
7.2 Functional Block Diagrams ..................................... 22
7.3 Feature Description................................................. 23
7.4 Device Functional Modes........................................ 26
8 Application and Implementation ........................ 30
8.1 Application Information............................................ 30
8.2 Typical Applications ................................................ 39
9 Power Supply Recommendations...................... 43
10 Layout................................................................... 43
10.1 Layout Guidelines ................................................. 43
10.2 Layout Example .................................................... 44
11 Device and Documentation Support ................. 45
11.1 Documentation Support ........................................ 45
11.2 Related Links ........................................................ 45
11.3 Receiving Notification of Documentation Updates 45
11.4 Community Resources.......................................... 45
11.5 Trademarks ........................................................... 45
11.6 Electrostatic Discharge Caution ............................ 45
11.7 Glossary ................................................................ 46
12 Mechanical, Packaging, and Orderable
Information ........................................................... 46
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (August 2018) to Revision D
Page
• Added reference to WQFN (RUN) package in Description section ....................................................................................... 1
• Added OPA2837 RUN package thermal information to document. ....................................................................................... 6
• Changed values of maximum and minimum input-referred offset voltage at 25and across temperature in 5 V and
3 V Electrical Characteristics tables. ...................................................................................................................................... 7
• Changed value of maximum input offset current drift for OPA2837 in 5 V and 3 V Electrical Characteristics tables. ......... 8
• Changed minimum value of CMRR in 5 V Electrical Characteristics table ............................................................................ 8
• Added reference to TIDA-01565 reference design in Power-Down Operation section........................................................ 24
• Added reference to TIDA-01565 reference design in1-Bit PGA Operation section ............................................................. 42
Changes from Revision B (July 2018) to Revision C
Page
• Added OPA2837 RUN package to document ........................................................................................................................ 1
Changes from Revision A (April 2018) to Revision B
Page
• Changed input common-mode impedance in 5V and 3V electrical characteristics tables..................................................... 8
Changes from Original (September 2017) to Revision A
Page
• Added OPA2837 to document ............................................................................................................................................... 1
• Added Single-Supply Operating Range Features bullet......................................................................................................... 1
• Changed 1 SPS to 1 MSPS in front page figure ................................................................................................................... 1
• Added footnote to Pin Functions table .................................................................................................................................. 4
• Changed footnote describing method of computation of slew rate in Electrical Characteristics: VS = 5 V table ................... 7
2 Submit Documentation Feedback
Copyright © 2017–2018, Texas Instruments Incorporated
Product Folder Links: OPA837 OPA2837


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity Reference Design OPA837, OPA28 37 SBOS673D – SEPTEMBER 2017 – REVI SED DECEMBER 2018 OPAx837 Low-Power, Pr ecision, 105-MHz, Voltage-Feedback Op A mp 1 Features •1 Bandwidth: 105 MHz (AV = 1 V/V) • Very Low (Trimmed) Sup ply Current: 600 µA • Gain Bandwidth Product: 50 MHz • Slew Rate: 105 V/ s • Negative Rail Input, Rail-to-Rai l Output • Single-Supply Operating Ra nge: 2.7 V to 5.4 V • 25°C Input Off set: ±130 µV (Max) • Input Offset V oltage Drift (DCK Package): < ±1.6 µV /°C (Maximum) • Input Voltage Noise: 4.7 nV/√Hz (> 100 Hz) • HD2: –12 0 dBc at 2 VPP, 100 kHz • HD3: –145 dBc at 2 VPP, 100 kHz • Settling Tim e: 35 ns, 0.5-V Step to 0.1% • 5-µA Shutdown Current With Fast Recovery Fro m Shutdown for Power Scaling Applicatio ns 2 Applications • 12-Bit to 16-Bit , Low-Power SAR Drivers • Precision A DC Reference Buffers • Very-Low-Power Active Filters • Low-Power Transimpedance Amplifiers • Sensor Signal Condi.
Keywords OPA837, datasheet, pdf, etcTI, Voltage-Feedback, Op, Amp, PA837, A837, 837, OPA83, OPA8, OPA, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)