MAX1186 datasheet(1/21 Pages) MAXIM | Dual 10-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs

Part No.	MAX1186

Description	Dual 10-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs

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Manufacturer	MAXIM [Maxim Integrated Products]

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General Description

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.

Applications

High-Resolution Imaging

I/Q Channel Digitization

Multichannel IF Sampling

Instrumentation

Video Application

Ultrasound

Features

o Single 3V Operation

o Excellent Dynamic Performance:

59.4dB SNR at fIN = 20MHz

72dBc SFDR at fIN = 20MHz

o Low Power:

35mA (Normal Operation)

2.8mA (Sleep Mode)

1µA (Shutdown Mode)

o 0.02dB Gain and 0.25° Phase Matching

o Wide ±1VP-P Differential Analog Input Voltage

Range

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

Complement or Offset Binary

o 48-Pin TQFP Package with Exposed Paddle For

Improved Thermal Dissipation

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

Internal Reference and Multiplexed Parallel Outputs

________________________________________________________________ Maxim Integrated Products

1

D1A/B

D0A/B

OGND

OVDD

OGND

A/B

N.C.

COM

VDD

GND

INA+

INA-

VDD

GND

INB-

INB+

GND

VDD

CLK

1

2

3

4

5

6

7

8

9

10

11

12

36

35

34

33

32

31

30

29

28

27

26

25

48 TQFP-EP

MAX1186

Pin Configuration

19-2263; Rev 0; 12/01

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX1186ECM

-40

°C to +85°C

48 TQFP-EP

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.

Functional Diagram appears at end of data sheet.

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