MAX1186 Maxim Integrated Products, MAX1186 Datasheet

MAX1186

Manufacturer Part Number

MAX1186

Description

Low-Power ADC

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX1186.pdf (21 pages)

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The MAX1186 is a 3V, dual 10-bit analog-to-digital con-

verter (ADC) featuring fully-differential wideband track-

and-hold (T/H) inputs, driving two pipelined, nine-stage

ADCs. The MAX1186 is optimized for low-power, high

dynamic performance applications in imaging, instru-

mentation, and digital communication applications. This

ADC operates from a single 2.7V to 3.6V supply, con-

suming only 105mW while delivering a typical signal-to-

noise ratio (SNR) of 59.4dB at an input frequency of

20MHz and a sampling rate of 40Msps. Digital outputs

A and B are updated alternating on the rising (CHA)

and the falling (CHB) edge of the clock. The T/H driven

input stages incorporate 400MHz (-3dB) input ampli-

fiers. The converters may also be operated with single-

ended inputs. In addition to low operating power, the

MAX1186 features a 2.8mA sleep mode as well as a

1µA power-down mode to conserve power during idle

periods.

An internal 2.048V precision bandgap reference sets

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

structure allows the use of this internal or an externally

derived reference, if desired for applications requiring

increased accuracy or a different input voltage range.

The MAX1186 features parallel, multiplexed, CMOS-

compatible three-state outputs. The digital output for-

mat can be set to two’s complement or straight offset

binary through a single control pin. The device provides

for a separate output power supply of 1.7V to 3.6V for

flexible interfacing. The MAX1186 is available in a

7mm x 7mm, 48-pin TQFP-EP package, and is speci-

fied for the extended industrial (-40°C to +85°C) tem-

perature range.

Pin-compatible, nonmultiplexed, high-speed versions of

the MAX1186 are also available. Please refer to the

MAX1180 data sheet for 105Msps, the MAX1181 data

sheet for 80Msps, the MAX1182 data sheet for 65Msps,

the MAX1183 data sheet for 40Msps, and the MAX1184

data sheet for 20Msps. For a pin-compatible lower

speed version (20Msps) of the MAX1186, please refer

to the MAX1185 data sheet.

19-2263; Rev 0; 12/01

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.

Internal Reference and Multiplexed Parallel Outputs

High-Resolution Imaging

I/Q Channel Digitization

Multichannel IF Sampling

Instrumentation

Video Application

Ultrasound

Dual 10-Bit, 40Msps, 3V, Low-Power ADC with

________________________________________________________________ Maxim Integrated Products

General Description

Applications

o Single 3V Operation

o Excellent Dynamic Performance:

o Low Power:

o 0.02dB Gain and 0.25° Phase Matching

o Wide ±1V

o 400MHz, -3dB Input Bandwidth

o On-Chip 2.048V Precision Bandgap Reference

o Single 10-Bit Bus for Multiplexed, Digital Outputs

o User-Selectable Output Format–Two’s

o 48-Pin TQFP Package with Exposed Paddle For

Functional Diagram appears at end of data sheet.

MAX1186ECM

Range

Complement or Offset Binary

Improved Thermal Dissipation

59.4dB SNR at f

72dBc SFDR at f

35mA (Normal Operation)

2.8mA (Sleep Mode)

1µA (Shutdown Mode)

COM

INA+

INB+

GND

INA-

INB-

CLK

PART

P-P

Differential Analog Input Voltage

-40°C to +85°C

TEMP RANGE

Ordering Information

48 TQFP-EP

= 20MHz

MAX1186

= 20MHz

Pin Configuration

PIN-PACKAGE

48 TQFP-EP

Features

D1A/B

D0A/B

OGND

A/B

N.C.

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