MAXIM MAX1184 Dual 10-Bit, 20Msps, 3V, Low- Power ADC with Internal Reference and Parallel Outputs Data Sheet User Manual

19-2174; Rev 1; 7/06

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs

General Description Features

The MAX1184 is a 3V, dual 10-bit analog-to-digital con- Single 3V Operation

verter (ADC) featuring fully-differential wideband track- Excellent Dynamic Performance: and-hold (T/H) inputs, driving two pipelined, 9-stage 59.5d B SNR at f IN = 7.5MHz

ADCs. The MAX1184 is optimized for low-power, high- 74d B SFDR at f IN = 7.5MHz

dynamic performance applications in imaging, instru- Low Power: mentation, and digital communication applications. This 35m A (Normal Operation)

ADC operates from a single 2.7V to 3.6V supply, con- 2.8m A (Sleep Mode) suming only 105m W while delivering a typical signal-to- 1µA (Shutdown Mode)

noise ratio (SNR) of 59.5d B at an input frequency of 0.02d B Gain and 0.25° Phase Matching (typ) 7.5MHz and a sampling rate of 20Msps. The T/H driven Wide ±1VP-P Differential Analog Input input stages incorporate 400MHz (-3d B) input amplifiers. Voltage Range The converters may also be operated with single-ended

400MHz -3d B Input Bandwidth

inputs. In addition to low operating power, the MAX1184

On-Chip 2.048V Precision Bandgap Reference

features a 2.8m A sleep mode as well as a 1µA power-

User-Selectable Output Format—Two’s

down mode to conserve power during idle periods.

Complement or Offset Binary

An internal 2.048V precision bandgap reference sets 48-Pin TQFP Package with Exposed Paddle for the full-scale range of the ADC. A flexible reference Improved Thermal Dissipation structure allows the use of the internal or an externally

Evaluation Kit Available

derived reference, if desired for applications requiring increased accuracy or a different input voltage range. Ordering Information

The MAX1184 features parallel, CMOS-compatible GN RE FN

PART TEMP RANGE PIN-PACKAGE

RE FP

three-state outputs. The digital output format is set to

RE FI MAX1184ECM -40°C to +85°C 48 TQFP-EP*

two’s complement or straight offset binary through a sin-

GN RE FO UT

gle control pin. The device provides for a separate out- MAX1184ECM+ -40°C to +85°C 48 TQFP-EP*

put power supply of 1.7V to 3.6V for flexible interfacing. *EP = Exposed paddle.

SL EE D8

The MAX1184 is available in a 7mm x 7mm, 48-pin

PD D7 +Denotes lead-free package.

TQFP package, and is specified for the extended

OE D6

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

Pin-compatible higher speed versions of the MAX1184 D8 D4

are also available. See Table 2 at end of data sheet for a D7 D3 list of pin-compatible D6 versions. Refer to the MAX1180 D2

data sheet for 105Msps, the MAX1181 data sheet for 80Msps, the MAX1182 data sheet for 65Msps, and the

MAX1183 data sheet for 40Msps. In addition to these COM D1A speed grades, this family includes a 20Msps multi- VDD D0A plexed output version (MAX1185), for which digital data GND OGND is presented time-interleaved on a single, parallel 10-bit INA+ OVDD output port. INA- OVDD VDD OGND

Applications GND MAX1184 D0B

INB- D1B

High-Resolution Imaging

INB+ D2B I/Q Channel Digitization GND D3B

VDD EP D4B

Multchannel IF Undersampling

CLK D5B

Instrumentation Video Application

48 TQFP-EP

NOTE: THE PIN 1 INDICATOR FOR LEAD-FREE PACKAGE IS REPLACED BY A “+” SIGN.

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.