LTC6421-20
Dual Matched 1.3GHz Differential Amplifiers/ADC Drivers
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Features
- Matched Gain ±0.1dB
- Matched Phase ±0.2° at 100MHz
- Channel Separation 80dB at 100MHz
- 1.3GHz –3dB Bandwidth; Fixed Gain of 10V/V (20dB)
- IMD3 = –76dBc at 100MHz, 2VP-P
- Equivalent OIP3 = 42dBm at 100MHz
- 1nV/√Hz Internal Op Amp Noise
- 6.2dB Noise Figure
- Differential Inputs and Outputs
- Rail-to-Rail Output Swing
- 40mA Supply Current (120mW) per Amplifier
- 1V to 1.6V Output Common Mode Voltage, Adjustable
- DC- or AC-Coupled Operation
- 20-Lead 3mm × 4mm × 0.75mm QFN Package
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The LTC6421-20 is a dual high speed differential amplifier targeted at processing signals from DC to 140MHz. 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 LTC6421-20 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 LTC6421-20 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6421-20 is packaged in a compact 20-lead 3mm × 4mm QFN package and operates over the – 40°C to 85°C temperature range.
Applications
- Differential ADC Driver
- Single Ended to Differential Conversion
- IF Sampling (Diversity) Receivers
- Broadband I/Q Amplifiers
- Satellite Communications
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LTC6421-20
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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 |
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| LTC6421CUDC-20#PBF |
20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
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| LTC6421CUDC-20#TRPBF |
20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
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| LTC6421IUDC-20#PBF |
20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
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| LTC6421IUDC-20#TRPBF |
20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
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- LTC6421CUDC-20#PBF
- Pin/Package Drawing
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20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- LTC6421CUDC-20#TRPBF
- Pin/Package Drawing
-
20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6421IUDC-20#PBF
- Pin/Package Drawing
-
20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6421IUDC-20#TRPBF
- Pin/Package Drawing
-
20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
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Part Models
Product Lifecycle
PCN
Mar 20, 2024
- 23_0089
Obsolescence of Tower Fab3 (JAZZ-3) SBC35 Process
LTC6421CUDC-20#PBF
LAST TIME BUY
LTC6421CUDC-20#TRPBF
LAST TIME BUY
LTC6421IUDC-20#PBF
LAST TIME BUY
LTC6421IUDC-20#TRPBF
LAST TIME BUY
Filter by Model
Part Models
Product Lifecycle
PCN
Mar 20, 2024
- 23_0089
Obsolescence of Tower Fab3 (JAZZ-3) SBC35 Process
LTC6421CUDC-20#PBF
LAST TIME BUY
LTC6421CUDC-20#TRPBF
LAST TIME BUY
LTC6421IUDC-20#PBF
LAST TIME BUY
LTC6421IUDC-20#TRPBF
LAST TIME BUY
Software & Part Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
|
RECOMMENDED FOR NEW DESIGNS |
Ultralow Distortion Differential ADC Driver (Dual) |
Evaluation Kits 1
DC1299A-B
LTC6421CUD-20 | Dual Matched 1.3GHz Differential Amplifiers/ADC Drivers
Product Detail
DC1299A-B: Demo Board for the LTC6421-20 Dual Matched 1.3GHz Differential Amplifiers/ADC Drivers
Resources
Tools & Simulations 2
ADIsimRF
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