LT6350 - Low Noise Single-Ended to Differential Converter/ADC Driver

Features

  • Rail-to-Rail Input and Outputs
  • Fast Settling Time: 240ns, 0.01%, 8VP-P Output Step
  • 1.9nV/√Hz Input-Referred Op Amp Noise
  • High Impedance Input
  • –3dB Bandwidth: 33MHz
  • 2.7V to 12V Supply Operation
  • No External Gain Resistors Required
  • 4.8mA Supply Current
  • Low Power Shutdown
  • Low Distortion (HD2/HD3): –102dBc/–97dBc at 100kHz, VOUTDIFF = 4VP-P
  • Low Offset Voltage: ±400μV Max
  • High DC Linearity: <±1LSB, 16-Bit, 8VP-P
  • Low Input Current Noise: 1.1pA/√Hz
  • 3mm × 3mm 8-Pin DFN and 8-Lead MSOP Packages

Typical Application

LT6350 Typical Application
LT6350 Typical Application

Description

The LT6350 is a rail-to-rail input and output low noise single-ended to differential converter/ADC driver featuring fast settling time. It converts a high or low impedance, single-ended input signal to a low impedance, balanced, differential output suitable for driving high performance differential succesive approximation register (SAR) ADCs. The two op amp topology features very low noise op amps, that can support SNR >110dB in a 1MHz bandwidth.

The input op amp is trimmed for constant low input-referred voltage offset over the input range to prevent VOS steps from degrading distortion.

On a single 5V supply, the outputs can swing from 55mV to 4.945V. With the addition of a negative supply, the LT6350 can swing from 0V to 4.945V. Output common mode voltage is set by applying a voltage to the +IN2 pin.

The LT6350 draws 4.8mA from a 5V supply and consumes just 60μA in shutdown mode.

The LT6350 is available in a compact 3mm × 3mm, 8-pin leadless DFN package and also in an 8-pin MSOP package and operates over a –40°C to 125°C temperature range.

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
LT6350CDD#PBF 3x3 DFN-8 DD C 05-08-1698 Yes
LT6350CDD#TRPBF 3x3 DFN-8 DD C 05-08-1698 Yes
LT6350CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LT6350CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LT6350HDD#PBF 3x3 DFN-8 DD H 05-08-1698 Yes
LT6350HDD#TRPBF 3x3 DFN-8 DD H 05-08-1698 Yes
LT6350HMS8#PBF MS-8 MS8 H 05-08-1660 Yes
LT6350HMS8#TRPBF MS-8 MS8 H 05-08-1660 Yes
LT6350IDD#PBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT6350IDD#TRPBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT6350IMS8#PBF MS-8 MS8 I 05-08-1660 Yes
LT6350IMS8#TRPBF MS-8 MS8 I 05-08-1660 Yes


LT6350 Package Drawing
LT6350 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
LT6350CDD#PBF 3x3 DFN-8 C $3.64 $2.59 Yes
LT6350CDD#TRPBF 3x3 DFN-8 C $2.65 Yes
LT6350CMS8#PBF MS-8 C $3.64 $2.59 Yes
LT6350CMS8#TRPBF MS-8 C $2.65 Yes
LT6350HDD#PBF 3x3 DFN-8 H $4.48 $3.19 Yes
LT6350HDD#TRPBF 3x3 DFN-8 H $3.25 Yes
LT6350HMS8#PBF MS-8 H $4.48 $3.19 Yes
LT6350HMS8#TRPBF MS-8 H $3.25 Yes
LT6350IDD#PBF 3x3 DFN-8 I $4.06 $2.89 Yes
LT6350IDD#TRPBF 3x3 DFN-8 I $2.95 Yes
LT6350IMS8#PBF MS-8 I $4.06 $2.89 Yes
LT6350IMS8#TRPBF MS-8 I $2.95 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
DC1500A-A LTC2393-16 with LT6350 optimized driver, 5V 16-bit 1Msps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718 $150.00
DC1500A-B LTC2392-16 with LT6350 optimized driver, 5V 16-bit 500ksps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718 $150.00
DC1500A-C LTC2391-16 with LT6350 optimized driver, 5V 16-bit 250ksps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718 $150.00
DC1538A LT6350 demo board $75.00
DC1783A-A LTC2380-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 2Msps, SAR ADC with 96dB SNR. Req DC718 or DC2026 $150.00
DC1783A-B LTC2378-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 1Msps, SAR ADC with 97dB SNR. Req DC718 or DC2026 $150.00
DC1783A-C LTC2377-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 500ksps, SAR ADC with 97dB SNR. Req DC718 or DC2026 $150.00
DC1783A-D LTC2376-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 250ksps, SAR ADC with 97dB SNR. Req DC718 or DC2026 $150.00
DC1783A-E LTC2379-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1.6Msps, SAR ADC with 101dB SNR. Req DC718 or DC2026 $150.00
DC1783A-F LTC2378-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1Msps, SAR ADC with 102dB SNR. Req DC718 or DC2026 $150.00
DC1783A-G LTC2377-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 500ksps, SAR ADC with 102dB SNR. Req DC718 or DC2026 $150.00
DC1783A-H LTC2376-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 250ksps, SAR ADC with 102dB SNR. Req DC718 or DC2026 $150.00
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Companion Boards

Part Number Description Price Documentation
DC718C USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) $300.00
DC2026C Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform $75.00
DC1075A Clock Divider board $50.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • 16-Bit and 18-Bit SAR ADC Drivers
  • Single-Ended to Differential Conversion
  • Differential Line Driver

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Design Tools

LTspice

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Models for the following parts are available in LTspice IV:
LT6350
LTC6350

Technical Support