SBOS867B
August 2017 – October 2018
OPA838
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Single 3-V Supply, < 3-mW Photodiode Amplifier With < 1.1-pA/√Hz Total Input-Referred Current Noise and 100-kΩ Gain With Overall 1-MHz SSBW
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics: VS = 5 V
7.6
Electrical Characteristics: VS = 3 V
7.7
Typical Characteristics: VS = 5 V
7.8
Typical Characteristics: VS = 3 V
7.9
Typical Characteristics: Over Supply Range
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Input Common-Mode Voltage Range
8.3.2
Output Voltage Range
8.3.3
Power-Down Operation
8.3.4
Trade-Offs in Selecting The Feedback Resistor Value
8.3.5
Driving Capacitive Loads
8.4
Device Functional Modes
8.4.1
Split-Supply Operation (±1.35 V to ±2.7 V)
8.4.2
Single-Supply Operation (2.7 V to 5.4 V)
8.5
Power Shutdown Operation
9
Application and Implementation
9.1
Application Information
9.1.1
Noninverting Amplifier
9.1.2
Inverting Amplifier
9.1.3
Output DC Error Calculations
9.1.4
Output Noise Calculations
9.1.5
High-Gain Differential I/O Designs
9.1.5.1
Differential I/O Design Requirements
9.1.5.2
Detailed Design Procedure
9.1.6
Transimpedance Amplifiers
9.1.7
Design Requirements
9.1.7.1
Detailed Design Procedure
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Device Support
12.1.1.1
TINA-TI Simulation Model Features
12.2
Documentation Support
12.2.1
Related Documentation
12.2.2
Receiving Notification of Documentation Updates
12.2.3
Community Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DCK|5
MPDS025F
DCK|6
MPDS114C
DBV|6
MPDS026M
Thermal pad, mechanical data (Package|Pins)
DCK|5
QFND228B
DCK|6
QFND228B
Orderable Information
sbos867b_oa
sbos867b_pm
1
Features
Gain Bandwidth Product: 300 MHz
Very-Low (Trimmed) Supply Current: 950 µA
Bandwidth: 90 MHz (A
V
= 6 V/V)
High Full-Power Bandwidth: 45 MHz, 4 V
PP
Negative Rail Input, Rail-to-Rail Output
Single-Supply Operating Range: 2.7 V to 5.4 V
25°C Input Offset: ±125 µV (Maximum)
Input Offset Voltage Drift: < ±1.6 µV/°C (Maximum)
Input Voltage Noise: 1.8 nV/√
Hz
(> 200 Hz)
Input Current Noise: 1 pA/√
Hz
(> 2000 Hz)
< 1-µA Shutdown Current for Power Savings