LT6350

1

6350f

TYPICAL APPLICATION

DESCRIPTION

Low Noise

Single-Ended to Differential

Converter/ADC Driver

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

from degrading distortion.

On a single 5V supply, the outputs can drive ADCs from

55mV to 4.945V on each input. With the addition of a

negative supply, the LT6350 can drive ADCs from 0V to

4.945V on each input. 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.

20kHz Sine Wave,

–1dBFS 8192-Point FFT

FEATURES

APPLICATIONS

FREQUENCY (kHz)

0

–140

–30

–10

–20

–60

–50

–40

–70

–80

–90

–110

–100

–120

–130

0

100

200

500

300

6350 TA02

400

SNR = 94.9dB

SINAD = 93.8dB

THD = –100.2dB

SFDR = 102.2dB

+

–

+IN1

–IN1

OUT2

OUT1

SHDN

+IN2

0V to 4V

5V

5V

0.1μF

0.1μF

0.1μF

499Ω

2V

–5V

LT6350

6350 TA01

249Ω

249Ω

2200pF

+

–

–

+

LTC2393-16

ADC Driver: Single-Ended Input to Differential Output

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 5610557, 6344773.