MAX1181 Maxim Integrated Products, MAX1181 Datasheet

MAX1181

Manufacturer Part Number

MAX1181

Description

Low-Power ADC

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX1181.pdf (20 pages)

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The MAX1181 is a 3V, dual 10-bit, analog-to-digital

converter (ADC) featuring fully-differential wideband

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

stage ADCs. The MAX1181 is optimized for low-power,

high-dynamic performance applications in imaging,

instrumentation, and digital communication applica-

tions. The MAX1181 operates from a single 2.7V to 3.6V

supply, consuming only 246mW, while delivering a typi-

cal signal-to-noise ratio (SNR) of 59dB at an input fre-

quency of 20MHz and a sampling rate of 80Msps. The

T/H driven input stages incorporate 400MHz (-3dB)

input amplifiers. The converters may also be operated

with single-ended inputs. In addition to low operating

power, the MAX1181 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 ADC. A flexible reference

structure allows the use of the internal or external

reference, if desired for applications requiring

increased accuracy or a different input voltage range.

The MAX1181 features parallel, CMOS-compatible

three-state outputs. The digital output format is 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 interfac-

ing. The MAX1181 is available in a 7mm

TQFP package, and is specified for the extended

industrial (-40°C to +85°C) temperature range.

Pin-compatible higher and lower speed versions of the

MAX1181 are also available. Please refer to the

MAX1180 datasheet for 105Msps, the MAX1182

datasheet for 65Msps, the MAX1183 datasheet for

40Msps, and the MAX1184 datasheet for 20Msps. In

addition to these speed grades, this family includes a

20Msps multiplexed output version (MAX1185), for

which digital data is presented time-interleaved on a

single, parallel 10-bit output port.

19-2093; Rev 1; 2/07

Functional Diagram appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim's website at www.maxim-ic.com.

High-Resolution Imaging

I/Q Channel Digitization

Multichannel IF Undersampling

Instrumentation

Video Application

with Internal Reference and Parallel Outputs

________________________________________________________________ Maxim Integrated Products

General Description

Dual 10-Bit, 80Msps, 3V, Low-Power ADC

Applications

7mm, 48-pin

♦ Single 3V Operation

♦ Excellent Dynamic Performance

♦ Low Power

♦ 0.02dB Gain and 0.25° Phase Matching (typ)

♦ Wide ±1V

♦ 400MHz, -3dB Input Bandwidth

♦ On-Chip 2.048V Precision Bandgap Reference

♦ User-Selectable Output Format—Two’s

♦ 48-Pin TQFP Package with Exposed Pad for

♦ Evaluation Kit Available

*EP = Exposed paddle.

+Denotes a lead-free package.

MAX1181ECM

MAX1181ECM+

Range

Complement or Offset Binary

Improved Thermal Dissipation

59dB SNR at f

73dB SFDR at f

82mA (Normal Operation)

2.8mA (Sleep Mode)

1µA (Shutdown Mode)

PART

COM

INA+

INB+

GND

INA-

GND

INB-

GND

CLK

NOTE: THE PIN 1 INDICATOR FOR LEAD-FREE PACKAGES IS REPLACED

P-P

BY A "+" SIGN.

Differential Analog Input Voltage

EP*

-40°C to +85°C

TEMP RANGE

Ordering Information

= 20MHz

48 TQFP-EP

= 20MHz

MAX1181

Pin Configuration

PIN-PACKAGE

48 TQFP-EP*

Features

D1A

D0A

OGND

D0B

D1B

D2B

D3B

D4B

D5B

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