LT5514
PRODUCTIONUltralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain
- Part Models
- 2
- 1ku List Price
- Starting From $7.49
Part Details
- Output IP3 at 100MHz: 47dBm
- Maximum Output Power: 21dBm
- Bandwidth: LF to 850MHz
- Propagation Delay: 0.8ns
- Maximum Gain: 33dB
- Noise Figure: 7.3dB (Max Gain)
- Gain Control Range: 22.5dB
- Gain Control Step: 1.5dB
- Gain Control Settling Time: 500ns
- Output Noise Floor: –134dBm/Hz (Max Gain)
- Reverse Isolation: –80dB
- Single Supply: 4.75V to 5.25V
- Low Power Mode
- Shutdown Mode
- Enable/Disable Time: 1µs
- Differential I/O Interface
- 20-Lead TSSOP Package
The LT5514 is a programmable gain amplifier (PGA) with bandwidth extending from low frequency (LF) to 850MHz. It consists of a digitally controlled variable attenuator, followed by a high linearity amplifier. The amplifier is configured with two identical transconductance amplifiers, hard wired in parallel with individual dedicated enable pins. When both amplifiers are enabled (Standard mode), the LT5514 offers an OIP3 of +47dBm (at 100MHz). Power dissipation can be reduced when a single amplifier is enabled (Low Power mode). Four parallel digital inputs control the gain over a 22.5dB range with 1.5dB step resolution. An on-chip power supply regulator/filter helps isolate the amplifier signal path from external noise sources.
The LT5514’s open-loop architecture offers stable operation for any practical load conditions, including peaking-free AC response when driving capacitive loads, and excellent reverse isolation.
The LT5514 may be operated broadband, where the output differential RC time constant sets the bandwidth, or it may be used as a narrowband driver with the appropriate output filter.
Applications
- High Linearity ADC Driver
- IF Sampling Receivers
- VGA IF Power Amplifier
- 50Ω Driver
- Instrumentation Applications
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Application 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 |
|---|---|---|---|
| LT5514EFE#PBF | 20-Lead TSSOP w/ EP | ||
| LT5514EFE#TRPBF | 20-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LT5514EFE#PBF | PRODUCTION | |
| LT5514EFE#TRPBF | PRODUCTION | |
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/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Integer-N PLL 1 | ||
| LTC6946 | LAST TIME BUY | Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC6412 | LAST TIME BUY | 800MHz, 31dB Range Analog-Controlled VGA |
| LTC6430-20 | RECOMMENDED FOR NEW DESIGNS | High Linearity Differential RF/IF Amplifier/ADC Driver |
Tools & Simulations
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 ToolEvaluation Kits
LT5514EFE | High Linearity Variable Gain IF Amp/ADC Driver