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

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.

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.

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
Applications
  • 16-Bit and 18-Bit SAR ADC Drivers
  • Single-Ended to Differential Conversion
  • Differential Line Driver
Packaging
LT6350 Package Drawing
LT6350 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT6350CDD#PBF3x3 DFN-8C$3.64$2.59
LT6350CDD#TRPBF3x3 DFN-8C$2.65
LT6350CMS8#PBFMS-8C$3.64$2.59
LT6350CMS8#TRPBFMS-8C$2.65
LT6350HDD#PBF3x3 DFN-8H$4.48$3.19
LT6350HDD#TRPBF3x3 DFN-8H$3.25
LT6350HMS8#PBFMS-8H$4.48$3.19
LT6350HMS8#TRPBFMS-8H$3.25
LT6350IDD#PBF3x3 DFN-8I$4.06$2.89
LT6350IDD#TRPBF3x3 DFN-8I$2.95
LT6350IMS8#PBFMS-8I$4.06$2.89
LT6350IMS8#TRPBFMS-8I$2.95
Demo Boards
Part NumberDescriptionPrice
DC1500A-ALTC2393-16 with LT6350 optimized driver, 5V 16-bit 1Msps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718$150.00
DC1500A-BLTC2392-16 with LT6350 optimized driver, 5V 16-bit 500ksps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718$150.00
DC1500A-CLTC2391-16 with LT6350 optimized driver, 5V 16-bit 250ksps Int Ref Parallel / Serial SAR ADC in LQFP-48, req DC718$150.00
DC1538ALT6350 demo board$75.00
DC1783A-ALTC2380-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 2Msps, SAR ADC with 96dB SNR. Req DC718 or DC2026$150.00
DC1783A-BLTC2378-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 1Msps, SAR ADC with 97dB SNR. Req DC718 or DC2026$150.00
DC1783A-CLTC2377-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 500ksps, SAR ADC with 97dB SNR. Req DC718 or DC2026$150.00
DC1783A-DLTC2376-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 250ksps, SAR ADC with 97dB SNR. Req DC718 or DC2026$150.00
DC1783A-ELTC2379-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1.6Msps, SAR ADC with 101dB SNR. Req DC718 or DC2026$150.00
DC1783A-FLTC2378-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1Msps, SAR ADC with 102dB SNR. Req DC718 or DC2026$150.00
DC1783A-GLTC2377-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 500ksps, SAR ADC with 102dB SNR. Req DC718 or DC2026$150.00
DC1783A-HLTC2376-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 250ksps, SAR ADC with 102dB SNR. Req DC718 or DC2026$150.00
Companion Boards
Part NumberDescriptionPrice
DC718CUSB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps)$300.00
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
DC1075AClock Divider board$50.00
Datasheet
Application Note
Design Note
Reliability Data
Product Selector Card
Press Release
CAD Symbol
Related Products
LT6350 - Low Noise Single-Ended to Differential Converter/ADC Driver
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A/D 转换器的保真度测试
应对驱动 SAR ADC 的挑战
轨至轨单端至差分放大器驱动高速 16 位至 18 位 SAR ADC
AN132 - Fidelity Testing for A to D Converters
DN494 - Driving a Low Noise, Low Distortion 18-Bit, 1.6Msps ADC
R378 Reliability Data
18-Bit 1.6Msps SAR ADC 101dB SNR
LTC2383: 16-Bit, 1Msps, 13mW SAR ADC
LTC2393-16 - 16-Bit 1Msps SAR ADC
Precision Signal Chain Products Selector Guide
SAR ADC Drivers
Rail-to-Rail Single-Ended to Differential Amplifier Drives High Speed 16- to 18-bit SAR ADCs
LT6350 Footprints and Symbols