Texas Instruments: DEM-OPA-SOT-1B Demonstration Fixture for Opamp SOT23 (DBV) package

atomar — Wed, 25 Jun 2014 00:52:51 GMT

Current Revision posted to Documents by atomar on 6/25/2014 12:52:51 AM

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Kit Overview

The Texas Instruments DEM-OPA-SOT-1BDEM-OPA-SOT-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the SOT23 (DBV) package. This board has been optimized to minimize parasitics and provide good harmonic distortion for wideband, high-gain, high-speed amplifiers

This demonstration fixture is a four-layer PCB. Mid-layer 1 has only power traces. Mid-layer 2 has both ground and power traces. The ground plane has been opened up around op amp pins sensitive to capacitive loading. Power-supply traces are laid out to keep current loop areas to a minimum. Mount the SMA (or SMB) connectors vertically. The location and type of capacitors used for power-supply bypassing are crucial to high-frequency amplifiers. The tantalum capacitors, CBYPVSP and CBYPVSN, do not need to be as close to pins 6 and 2 on the PCB, and may be shared with other amplifiers.

This demonstration fixture, and the component values shown, is designed to operate in a 50W environment. Most data sheet plots are obtained this way. It is easy to change the component values for different input and output impedance levels. Do not use high impedance probes; they represent a heavy capacitive load to the op amp, and will alter the amplifier response. Instead, use low impedance (£ 500W) probes with adequate bandwidth. The probe input capacitance and resistance set an upper limit on the measurement bandwidth. If a high impedance probe must be used, place a 100W resistor on the probe tip to isolate its capacitance from the circuit.

Key Applications: Demonstration fixture for SOT23 (DBV) package opamps

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Technical Documents

Learning Center

Type	Description
User Guide	TI: User Guide for DEM-OPA-SOT-1B (Rev. B)
Datasheet	TI: Datasheet for OPA693: Ultra-Wideband, Fixed Gain Video Buffer Amplifier with Disable (Rev. A)
Datasheet	TI: Datasheet for OPA847 - Wideband, Ultra Low-Noise, Voltage-Feedback Operational Amplifier with Shutdown (Rev. E)
Datasheet	TI: Datasheet for OPA694 Wideband, Low-Power,Current Feedback Operational Amplifier
Datasheet	TI: Datasheet for OPA695 - Ultra-Wideband, Current-Feedback OPERATIONAL AMPLIFIER With Disable
Datasheet	TI: Datasheet for OPA846 - Wideband, Low-Noise, Voltage-Feedback OPERATIONAL AMPLIFIER
Application Note	TI: Application Note for Op Amp Performance Analysis
Application Note	TI: Application Note for TUNING IN AMPLIFIERS
Application Note	TI: Application Note for Single-Supply Operation of Operational Amplifiers
Application Note	TI: Application Note for HIGH SPEED DATA CONVERSION

Design Elements

Type	Description
Reference Design	TI: Reference Design for OPA847 TINA-TI (Rev. C)
Simulation Model	TI: SPICE Model for OPA693
Simulation Model	TI: SPICE Model for OPA847 TINA-TI (Rev. A)
Simulation Model	TI: OPA694 PSpice Model
Simulation Model	TI: OPAy695 PSpice Model (Rev. B)
Simulation Model	TI: OPA846 PSpice Model (Rev. B)
Reference Design	TI: Reference Design for OPAy694 Family TINA-TI
Reference Design	TI: Reference Design for OPAy695 TINA-TI
Reference Design	TI: Reference Design for OPA846 TINA-TI
CAD Model	TI: CAD Models for OPA693
CAD Model	TI: CAD Models for OPA694
CAD Model	TI: CAD Models for OPA695
CAD Model	TI: CAD Models for OPA846
CAD Model	TI: CAD Models for OPA847

Video

Video 1	Video 2
www.youtube.com/watch	www.youtube.com/watch

Kit Features

Key Features for DEM-OPA-SOT-1BDEM-OPA-SOT-1B is as below:

Unpopulated PC board is compatible with products offered in the SOT23 (DBV) package
optimized to minimize parasitics and provide good harmonic distortion for wideband, high-gain, high-speed amplifiers.
Demonstration fixture is a four-layer PCB.
- Mid-layer 1 has only power traces.
- Mid-layer 2 has both ground and power traces.
- The ground plane has been opened up around op amp pins sensitive to capacitive loading.
Power-supply traces are laid out to keep current loop areas to a minimum. Mount the SMA (or SMB) connectors vertically.
The location and type of capacitors used for power-supply bypassing are crucial to high-frequency amplifiers.

Kit Contents

The Texas Instruments DEM-OPA-SOT-1BDEM-OPA-SOT-1B supplied with below contents:

Demonstration Fixture for Opamp SOT23 (DBV) package

Tags: dem-opa-sot-1b, opamp, sot23, demonstration_fixture, texas_instruments, dem_opa_sot_1b