Datasheet > MAX1421_V01

MAX1421_V01

更新时间： 2024-11-12 02:52:31

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
17页	571K
描述
12-Bit, 40Msps, 3.3V, Low-Power ADC with Internal Reference

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MAX1421_V01 数据手册

19-1900; Rev 1; 5/06

12-Bit, 40Msps, 3.3V, Low-Power ADC

with Internal Reference

General Description

Features

The MAX1421 is a 3.3V, 12-bit analog-to-digital con-

verter (ADC), featuring a fully-differential input,

pipelined, 12-stage ADC architecture with wideband

track-and-hold (T/H) and digital error correction incor-

porating a fully-differential signal path. The MAX1421 is

optimized for low-power, high-dynamic performance

applications in imaging and digital communications.

The converter operates from a single 3.3V supply, con-

suming only 188mW while delivering a typical signal-to-

noise ratio (SNR) of 66dB at an input frequency of

15MHz and a sampling frequency of 40Msps. The fully-

differential input stage has a small signal -3dB band-

width of 400MHz and may be operated with

single-ended inputs.

♦ Single 3.3V Power Supply

♦ 67dB SNR at f = 5MHz

♦ 66dB SNR at f = 15MHz

♦ Internal, 2.048V Precision Bandgap Reference

♦ Differential, Wideband Input T/H Amplifier

♦ Power-Down Modes

180mW (Reference Shutdown Mode)

10µW (Shutdown Mode)

♦ Space-Saving 48-Pin TQFP Package

An internal 2.048V precision bandgap reference sets

the full-scale range of the ADC. A flexible reference

structure accommodates an internal or externally

applied buffered or unbuffered reference for applica-

tions requiring increased accuracy or a different input

voltage range.

Ordering Information

PIN-

PKG

PART*

TEMP RANGE

PACKAGE CODE

MAX1421CCM

MAX1421ECM

MAX1421ECM+

0°C to +70°C

-40°C to +85°C

48 TQFP

C48-2

In addition to low operating power, the MAX1421 fea-

tures two power-down modes, a reference power-down

and a shutdown mode. In reference power-down, the

internal bandgap reference is deactivated, resulting in

a typical 2mA supply current reduction. For idle peri-

ods, a full shutdown mode is available to maximize

power savings.

+Denotes lead-free package.

Pin Configuration

The MAX1421 provides parallel, offset binary, CMOS-

compatible three-state outputs.

The MAX1421 is available in a 7mm x 7mm, 48-pin

TQFP package, and is specified over the commercial

(0°C to +70°C) and the extended industrial (-40°C to

+85°C) temperature ranges.

AGND

36 D9

35 D8

34 D7

33 D6

Pin-compatible higher- and lower-speed versions of the

MAX1421 are also available. Please refer to the

MAX1420 data sheet for a frequency of 60Msps and

the MAX1422 data sheet for a frequency of 20Msps.

AGND

INP

32 DV

31 DV

MAX1421

________________________Applications

INN

30 DGND

29 DGND

AGND

Medical Ultrasound Imaging

CCD Pixel Processing

Data Acquisition

AGND

Radar

IF and Baseband Digitization

48-TQFP

Functional Diagram appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...17

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与MAX1421_V01相关器件

型号	品牌	获取价格	描述	数据表
MAX1421CCM	MAXIM	获取价格	12-Bit, 40Msps, +3.3V, Low-Power ADC with Internal Reference
MAX1421CCM+TD	MAXIM	获取价格	ADC, Proprietary Method, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, PQFP48, 7 X 7 M
MAX1421CCM-D	MAXIM	获取价格	ADC, Proprietary Method, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, PQFP48, 7 X 7 M
MAX1421CCM-T	MAXIM	获取价格	ADC, Proprietary Method, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, PQFP48, 7 X 7 M
MAX1421CCM-TD	MAXIM	获取价格	ADC, Proprietary Method, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, PQFP48, 7 X 7 M
MAX1421ECM	MAXIM	获取价格	12-Bit, 40Msps, +3.3V, Low-Power ADC with Internal Reference
MAX1421ECM+	MAXIM	获取价格	12-Bit, 40Msps, 3.3V, Low-Power ADC with Internal Reference
MAX1421ECM+TD	MAXIM	获取价格	ADC, Proprietary Method, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, PQFP48, 7 X 7 M
MAX1421ECM-TD	MAXIM	获取价格	ADC, Proprietary Method, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, PQFP48, 7 X 7 M
MAX1422	MAXIM	获取价格	12-Bit, 20Msps, 3.3V, Low-Power ADC with Internal Reference

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