LT1993-4
NOT RECOMMENDED FOR NEW DESIGNS900MHz Low Distortion, Low Noise Differential Amplifier/ADC Driver (AV = 4V/V)
- Part Models
- 4
- 1ku List Price
- Starting From $4.18
Part Details
- 900MHz −3dB Bandwidth
- Fixed Gain of 4V/V (12dB)
- Low Distortion:
- 40dBm OIP3, −73dBc HD3 (70MHz 2VP-P)
- 51dBm OIP3, −94dBc HD3 (10MHz 2VP-P)
- Low Noise: 14.5dB NF, en = 2.35nV/√Hz (70MHz)
- Differential Inputs and Outputs
- Additional Filtered Outputs
- Adjustable Output Common Mode Voltage
- DC- or AC-Coupled Operation
- Minimal Support Circuitry Required
- Small 0.75mm Tall 16-Lead 3 × 3 QFN Package
The LT1993-4 is a low distortion, low noise Differential Amplifier/ADC driver for use in applications from DC to 900MHz. The LT1993-4 has been designed for ease of use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-ended or differential inputs) make the LT1993-4 an excellent solution for driving high speed 12-bit and 14-bit ADCs. In addition to the normal unfiltered outputs (+OUT and -OUT), the LT1993-4 has a built-in 175MHz differential lowpass filter and an additional pair of filtered outputs (+OUTFILTERED, -OUTFILTERED) to reduce external filtering components when driving high speed ADCs. The output common mode voltage is easily set via the VOCM pin, eliminating either an output transformer or AC-coupling capacitors in many applications.
The LT1993-4 is designed to meet the demanding requirements of communications transceiver applications. It can be used as a differential ADC driver, a general-purpose differential gain block, or in any other application requiring differential drive. The LT1993-4 can be used in data acquisition systems required to function at frequencies down to DC.
The LT1993-4 operates on a 5V supply and consumes 100mA. It comes in a compact 16-lead 3 × 3 QFN package and operates over a -40°C to 85°C temperature range.
Applications
- Differential ADC Driver for:
- Imaging
- Communications
- Differential Driver/Receiver
- Single Ended to Differential Conversion
- Differential to Single Ended Conversion
- Level Shifting
- IF Sampling Receivers
- SAW Filter Interfacing/Buffering
Documentation
Data Sheet 1
Reliability Data 1
User Guide 2
Design Note 1
Product Selector Card 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1993CUD-4#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1993CUD-4#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1993IUD-4#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1993IUD-4#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1993-10
- LT1993-2
- LT1993-4
ADIsimRF
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
Open ToolSys-Parameter Models for Keysight Genesys
Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LT1993CUD-4 | 900MHz diff In/Out ADC Driver
Resources
Combo Demo Board for LTC2255 and LT1993-4 (12dB) Requires DC718
Resources
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