LTC2280I 查看數據表（PDF） - Linear Technology

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LTC2280I

Dual 10-Bit, 105Msps Low Noise 3V ADC

Linear Technology 

LTC2280

Dual 10-Bit, 105Msps

Low Noise 3V ADC

FEATURES

■ Integrated Dual 10-Bit ADCs

■ Sample Rate: 105Msps

■ Single 3V Supply (2.85V to 3.4V)

■ Low Power: 540mW

■ 61.6dB SNR, 85dB SFDR

■ 110dB Channel Isolation at 100MHz

■ 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

105Msps: LTC2282 (12-Bit), LTC2280 (10-Bit)

80Msps: LTC2294 (12-Bit), LTC2289 (10-Bit)

65Msps: LTC2293 (12-Bit), LTC2288 (10-Bit)

40Msps: LTC2292 (12-Bit), LTC2287 (10-Bit)

25Msps: LTC2291 (12-Bit), LTC2286 (10-Bit)

10Msps: LTC2290 (12-Bit)

■ 64-Pin (9mm × 9mm) QFN Package

U

APPLICATIO S

■ Wireless and Wired Broadband Communication

■ Imaging Systems

■ Spectral Analysis

■ Portable Instrumentation

DESCRIPTIO

The LTC®2280 is a 10-bit 105Msps, low noise 3V dual

A/D converter designed for digitizing high frequency, wide

dynamic range signals. The LTC2280 is perfect for

demanding imaging and communications applications

with AC performance that includes 61.6dB SNR and 85dB

SFDR for signals at the Nyquist frequency.

DC specs include ±0.1LSB INL (typ), ±0.1LSB DNL (typ)

and ±0.6LSB INL, ±0.6LSB DNL over temperature. The

transition noise is a low 0.08LSBRMS.

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.

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

ANALOG

INPUT A

+

INPUT

S/H

–

10-BIT

PIPELINED

ADC CORE

CLK A

CLK B

CLOCK/DUTY CYCLE

CONTROL

CLOCK/DUTY CYCLE

CONTROL

ANALOG

INPUT B

+

INPUT

S/H

–

10-BIT

PIPELINED

ADC CORE

OUTPUT

DRIVERS

OVDD

D9A

•••

D0A

OGND

MUX

OUTPUT

DRIVERS

OVDD

D9B

•••

D0B

OGND

SNR vs Input Frequency,

–1dB, 2V Range

65

64

63

62

61

60

59

58

57

56

55

0

50

100

150

200

INPUT FREQUENCY (MHz)

2280 TA02

2280 TA01

2280fa

1

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