LTC2236IUH datasheet(1/28 Pages) LINER

Part #	LTC2236IUH

Description	10-Bit, 65/40/25Msps Low Noise 3V ADCs

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC2238/LTC2237/LTC2236

1

223876fa

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

■ Sample Rate: 65Msps/40Msps/25Msps

■ Single 3V Supply (2.7V to 3.4V)

■ Low Power: 205mW/120mW/75mW

■ 61.8dB SNR

■ 85dB SFDR

■ No Missing Codes

■ Flexible Input: 1VP-P to 2VP-P Range

■ 575MHz Full Power Bandwidth S/H

■ Clock Duty Cycle Stabilizer

■ Shutdown and Nap Modes

■ Pin Compatible Family:

125Msps: LTC2251 (10-Bit), LTC2253 (12-Bit)

105Msps: LTC2250 (10-Bit), LTC2252 (12-Bit)

80Msps: LTC2239 (10-Bit), LTC2229 (12-Bit)

65Msps: LTC2238 (10-Bit), LTC2228 (12-Bit)

40Msps: LTC2237 (10-Bit), LTC2227 (12-Bit)

25Msps: LTC2236 (10-Bit), LTC2226 (12-Bit)

■ 32-Pin (5mm

× 5mm) QFN Package

10-Bit, 65/40/25Msps

Low Noise 3V ADCs

The LTC

®2238/LTC2237/LTC2236 are 10-bit 65Msps/

40Msps/25Msps, low power 3V A/D converters designed

for digitizing high frequency, wide dynamic range signals.

The LTC2238/LTC2237/LTC2236 are perfect for demand-

ing imaging and communications applications with AC

performance that includes 61.8dB SNR and 85dB SFDR

for signals at the Nyquist frequency.

DC specs include

±0.1LSB INL (typ), ±0.05LSB DNL (typ)

and

±0.5LSB INL, ±0.5LSB DNL over temperature. The

transition noise is a low 0.07LSBRMS.

A single 3V supply allows low power operation. A separate

output supply allows the outputs to drive 0.5V to 3.6V

logic.

A single-ended CLK input controls converter operation. An

optional clock duty cycle stabilizer allows high perfor-

mance at full speed for a wide range of clock duty cycles.

LTC2238: SNR vs Input Frequency,

–1dB, 2V Range, 65Msps

■ Wireless and Wired Broadband Communication

■ Imaging Systems

■ Ultrasound

■ Spectral Analysis

■ Portable Instrumentation

INPUT FREQUENCY (MHz)

0

59.5

60.5

200

223876 G09

58.5

57.5

50

100

150

62.5

61.5

–

+

INPUT

S/H

CORRECTION

LOGIC

OUTPUT

DRIVERS

10-BIT

PIPELINED

ADC CORE

CLOCK/DUTY

CYCLE

CONTROL

FLEXIBLE

REFERENCE

D9

•

D0

CLK

REFH

REFL

ANALOG

INPUT

223876 TA01

OVDD

OGND

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

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