Datasheet > LTC1402_1

LTC1402_1

更新时间： 2024-11-25 05:43:39

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
24页	281K
描述
Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown

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中文翻译

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数据手册

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LTC1402_1 数据手册

LTC1402

Serial 12-Bit, 2.2Msps

Sampling ADC with Shutdown

FEATURES

DESCRIPTIO

The LTC^®1402 is a 12-bit, 2.2Msps sampling A/D con-

verter. This high performance device includes a high dy-

namic range sample-and-hold and a precision reference.

It operates from a single 5V supply or dual ±5V supplies

and draws only 90mW from 5V.

■

Sample Rate: 2.2Msps

■

72dB S/(N + D) and –89dB THD at Nyquist

■

Power Dissipation: 90mW (Typ)

■

80MHz Full Power Bandwidth Sampling

■

No Missing Codes over Temperature

■

Available in 16-Pin Narrow SSOP Package

The versatile differential input offers a unipolar range of

4.096V and a bipolar range of ±2.048V for dual supply

systems where high performance op amps perform best,

eliminating the need for special translation circuitry.

■

Single Supply 5V or ±5V Operation

■

Nap Mode with Instant Wake-Up: 15mW

■

Sleep Mode: 10µW

■

True Differential Inputs Reject Common Mode Noise

The high common mode rejection allows users to elimi-

nategroundloopsandcommonmodenoisebymeasuring

signals differentially from the source.

■

Input Range (1mV/LSB): 0V to 4.096V or ±2.048V

■

Internal Reference Can Be Overdriven Externally

■

3-Wire Interface to DSPs and Processors (SPI and

MICROWIRE^TMCompatible)

Outstanding AC performance includes 72dB S/(N + D) and

–93dB SFDR at the Nyquist input frequency of 1.1MHz

with dual ±5V supplies and –84dB SFDR with a single 5V

supply.

APPLICATIO S

■ Telecommunications

■

The LTC1402 has two power saving modes: Nap and

Sleep. Nap mode consumes only 15mW of power and can

wake up and convert immediately. In Sleep mode, it

typically consumes 10µW of power. Upon power-up from

Sleep mode, a reference ready (REFRDY) signal is avail-

able in the serial data word to indicate that the reference

has settled and the chip is ready to convert.

High Speed Data and Signal Acquisition

■

Digitally Multiplexed Data Acquisition Systems

■

Digital Radio Receivers

Spectrum Analysis

Low Power and Battery-Operated Systems

Handheld or Portable Instruments

Imaging Systems

The 3-wire serial port allows compact and efficient data

transfer to a wide range of microprocessors, microcon-

trollers and DSPs. A digital output driver power supply pin

allows direct connection to 3V or lower logic.

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

MICROWIRE is a trademark of National Semiconductor Corp.

BLOCK DIAGRA

3V OR 5V

5 Harmonic THD, 2nd, 3rd and SFDR

vs Input Frequency (Unipolar)

12 DV

11 OV

10µF

THD

SFDR

–10

–20

–30

2ND

3RD

SAMPLE-

OUTPUT

BUFFER

12-BIT ADC

OUT

AND-HOLD

= 2.22MHz

SAMPLE

–

–40

–50

4.096V

–60

REF

10µF

64k

–70

–

–80

BIP/UNI

CONV

SCK

–90

2.048

REFERENCE

TIMING

LOGIC

–100

–110

–120

GAIN

LTC1402

1402 TA01

10µF

–5V OR 0V

AGND1

AGND2

13 DGND

9 OGND

INPUT FREQUENCY (Hz)

1401 G05

12 3 4 5 6 7...24

中文翻译

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与LTC1402_1相关器件

型号	品牌	获取价格	描述	数据表
LTC1402C	Linear	获取价格	Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown
LTC1402CGN	Linear	获取价格	Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown
LTC1402CGN#PBF	Linear	获取价格	LTC1402 - Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown; Package: SSOP; Pins: 16; Temp
LTC1402CGN#TRPBF	Linear	获取价格	LTC1402 - Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown; Package: SSOP; Pins: 16; Temp
LTC1402I	Linear	获取价格	Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown
LTC1402IGN	Linear	获取价格	Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown
LTC1402IGN#TR	Linear	获取价格	LTC1402 - Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown; Package: SSOP; Pins: 16; Temp
LTC1402IGN#TRPBF	Linear	获取价格	LTC1402 - Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown; Package: SSOP; Pins: 16; Temp
LTC1403	Linear	获取价格	Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown
LTC1403	ADI	获取价格	具停机功能的串行 12 位、2.8Msps 采样 ADC

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