LTC6419
RECOMMENDED FOR NEW DESIGNSDual 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver
- Part Models
- 2
- 1ku List Price
- Starting From $11.82
Part Details
- 10GHz Gain-Bandwidth Product
- 85dB SFDR at 100MHz, 2VP-P
- 1.1nV/√Hz Input Noise Density
- Channel Separation 95dB at 100MHz
- Input Range Includes Ground
- External Resistors Set Gain (Min 1V/V)
- 3300V/μs Differential Slew Rate
- 52mA Supply Current (Per Amplifier)
- 2.7V to 5.25V Supply Voltage Range
- Fully Differential Input and Output
- Adjustable Output Common Mode Voltage
- Low Power Shutdown
- Small 20-Lead 4mm × 3mm × 0.75mm LQFN Package
The LTC6419 is a dual very high speed, low distortion, differential amplifier. Its input common mode range includes ground, so that a ground-referenced single-ended or differential input signal can be DC-coupled, level-shifted, and converted to drive an ADC differentially.
The gain and feedback resistors are external, so that the exact gain and frequency response can be tailored to each application. For example, the amplifier could be externally compensated in a no-overshoot configuration, which is desired in certain time-domain applications.
The LTC6419 is stable in a differential gain of 1. This allows for low output noise in applications where gain is not desired. Each amplifier draws 52mA of supply current and has an independent shutdown pin which reduces current consumption to 100μA per amplifier.
The LTC6419 is available in a compact 4mm × 3mm 20‑pin LQFN package and operates over a –40°C to 125°C temperature range.
Applications
- Broadband I/Q Amplifiers
- Dual Differential ADC Driver
- High-Speed Data-Acquisition Cards
- Automated Test Equipment
- Time Domain Reflectometry
- Communications Receivers
Documentation
Data Sheet 1
Reliability Data 1
User Guide 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 |
|---|---|---|---|
| LTC6419HV#PBF | 20-Lead LQFN (4mm x 3mm x 0.75mm w/ EP) | ||
| LTC6419IV#PBF | 20-Lead LQFN (4mm x 3mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| I/Q Demodulators 1 | ||
| LTC5585 | PRODUCTION | Wideband IQ Demodulator with IIP2 and DC Offset Control |
| Standard High Speed A/D Converters 1 | ||
| LTC2158-14 | NOT RECOMMENDED FOR NEW DESIGNS | Dual 14-Bit 310Msps ADC |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC6409 | RECOMMENDED FOR NEW DESIGNS | 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC6419
ADI DiffAmpCalc™
ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.
Open ToolSignal Chain Designer - BETA
Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.
Open ToolADIsimRF
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
LTC6419 - Dual Differential Amplifiers / ADC Drivers
Resources
HMCAD1511 Evaluation Board