LTC6400-20
LAST TIME BUY1.8GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF
- Part Models
- 4
- 1ku List Price
- Starting From $3.84
Part Details
- 1.8GHz –3dB Bandwidth
- Fixed Gain of 10V/V (20dB)
- –94dBc IMD3 at 70MHz (Equivalent OIP3 = 51dBm)
- –65dBc IMD3 at 300MHz (Equivalent OIP3 = 36.5dBm)
- 1nV/√Hz Internal Op Amp Noise
- 2.1nV/√Hz Total Input Noise
- 6.2dB Noise Figure
- Differential Inputs and Outputs
- 200Ω Input Impedance
- 2.85V to 3.5V Supply Voltage
- 90mA Supply Current (270mW)
- 1V to 1.6V Output Common Mode Voltage, Adjustable
- DC- or AC-Coupled Operation
- Max Differential Output Swing 4.4VP-P
- Small 16-Lead 3mm × 3mm × 0.75mm QFN Package
The LTC6400-20 is a high-speed differential amplifier targeted at processing signals from DC to 300MHz. The part has been specifically designed to drive 12-, 14- and 16-bit ADCs with low noise and low distortion, but can also be used as a general-purpose broadband gain block.
The LTC6400-20 is easy to use, with minimal support circuitry required. The output common mode voltage is set using an external pin, independent of the inputs, which eliminates the need for transformers or AC-coupling capacitors in many applications. The gain is internally fixed at 20dB (10V/V).
The LTC6400-20 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6400-20 is packaged in a compact 16-lead 3mm × 3mm QFN package and operates over the –40°C to 85°C temperature range.
Applications
- Differential ADC Driver
- Differential Driver/Receiver
- Single Ended to Differential Conversion
- IF Sampling Receivers
- SAW Filter Interfacing
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Application Note 1
Design Note 1
Technical Articles 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 |
|---|---|---|---|
| LTC6400CUD-20#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC6400CUD-20#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC6400IUD-20#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC6400IUD-20#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 20, 2024 - 23_0089 Obsolescence of Tower Fab3 (JAZZ-3) SBC35 Process |
||
| LTC6400CUD-20#PBF | LAST TIME BUY | |
| LTC6400CUD-20#TRPBF | LAST TIME BUY | |
| LTC6400IUD-20#PBF | LAST TIME BUY | |
| LTC6400IUD-20#TRPBF | LAST TIME BUY | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC6409 | RECOMMENDED FOR NEW DESIGNS | 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver |
Tools & Simulations
LTspice 4
- LTC6400-20 - Differential Amplifiers and ADC Drivers
- LTC6400-20 Demo Circuit - Single-Ended Impedance Matching for Fully Differential Amplifiers
- LTC6400-20 Demo Circuit - Noise Simulation for Fully-Differential Amplifiers
- LTC6400-20 Demo Circuit - Differential Impedance Matching for Fully-Differential Amplifiers
Models for the following parts are available in LTspice:
- LTC6400-14
- LTC6400-20
- LTC6400-26
- LTC6400-8
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
LTC6400-20 3GHz Fully Differential ADC Driver Demo Circuit
Resources
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