LTC6416 - 2GHz Low Noise Differential 16-Bit ADC Buffer

Features

  • 2GHz –3dB Small Signal Bandwidth
  • 300MHz ±0.1dB Bandwidth
  • 1.8nV/√Hz Output Noise
  • 46.25dBm Equivalent OIP3 at 140MHz
  • 40.25dBm Equivalent OIP3 Up to 300MHz
  • –81dBc/–72dBc HD2/HD3 at 140MHz, 2VP-P Out
  • –84.5dBc IM3 at 140MHz, 2VP-P Out Composite
  • –74dBc/–67.5dBc HD2/HD3 at 300MHz, 2VP-P Out
  • –72.5dBc IM3 at 300MHz, 2VP-P Out Composite
  • Programmable High Speed, Fast Recovery Output Clamping
  • DC-Coupled Signal Path
  • Operates on Single 2.7V to 3.9V Supply
  • Low Power: 150mW on 3.6V
  • 2mm × 3mm 10-Pin DFN Package

Typical Application

LTC6416 Typical Application
LTC6416 Typical Application

Description

The LTC6416 is a differential unity gain buffer designed to drive 16-bit ADCs with extremely low output noise and excellent linearity beyond 300MHz. Differential input impedance is 12kΩ, allowing 1:4 and 1:8 transformers to be used at the input to achieve additional system gain.

With no external biasing or gain setting components and a flow-through pinout, the LTC6416 is very easy to use. It can be DC-coupled and has a common mode output offset of –40mV. If the input signals are AC-coupled, the LTC6416 input pins are internally biased to provide an output common mode voltage that is set by the voltage on the VCM pin.

In addition the LTC6416 has high speed, fast recovery clamping circuitry to limit output signal swing. Both the high and low clamp voltages are internally biased to allow maximum output swing but are also user programmable via the CLLO and CLHI pins.

Supply current is nominally 42mA and the LTC6416 operates on supply voltages ranging from 2.7V to 3.9V.

The LTC6416 is packaged in a 10-lead 3mm × 2mm DFN package. Pinout is optimized for placement directly adjacent to Linear’s high speed 12-, 14- and 16-bit ADCs.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC6416CDDB#PBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC6416CDDB#TRMPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC6416CDDB#TRPBF 3x2 DFN-10 DDB C 05-08-1722 Yes
LTC6416IDDB#PBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC6416IDDB#TRMPBF 3x2 DFN-10 DDB I 05-08-1722 Yes
LTC6416IDDB#TRPBF 3x2 DFN-10 DDB I 05-08-1722 Yes


LTC6416 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC6416CDDB#PBF 3x2 DFN-10 C $5.00 Yes
LTC6416CDDB#TRMPBF 3x2 DFN-10 C $5.00 $3.55 Yes
LTC6416CDDB#TRPBF 3x2 DFN-10 C $5.00 $3.50 Yes
LTC6416IDDB#PBF 3x2 DFN-10 I $5.50 Yes
LTC6416IDDB#TRMPBF 3x2 DFN-10 I $5.50 $3.90 Yes
LTC6416IDDB#TRPBF 3x2 DFN-10 I $5.50 $3.85 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1257B LTC6416 + LTC2208 Combo board (Requires DC890 & LVDS_XFMR) $225.00
DC1287A LTC6416 Demo Circuit (2 GHz Low Noise Differential 16-Bit ADC Buffer) $100.00
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Companion Boards

Part Number Description Price Documentation
DC890B USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) $300.00
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Click here to view our complete list of demo boards

Applications

  • Differential ADC Driver
  • IF Sampling Receivers
  • Impedance Transformer
  • SAW Filter Interface
  • CCD Buffer

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LTC6416

Technical Support