MAX1196 datasheet(1/23 Pages) MAXIM | Dual 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs

Part #	MAX1196

Description	Dual 8-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 MAX1196 is a 3V, dual 8-bit analog-to-digital con-

verter (ADC) featuring fully differential wideband track-

and-hold (T/H) inputs, driving two ADCs. The MAX1196

is optimized for low power, small size, and high-dynamic

performance for applications in imaging, instrumenta-

tion, and digital communications. This ADC operates

from a single 2.7V to 3.6V supply, consuming only

87mW while delivering a typical signal-to-noise and dis-

tortion (SINAD) of 48.4dB at an input frequency of

20MHz and a sampling rate of 40Msps. The T/H driven

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

fiers. The converters can also be operated with single-

ended inputs. In addition to low operating power, the

MAX1196 features a 3mA sleep mode as well as a

0.1µA 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 this internal or an externally

applied reference, if desired for applications requiring

increased accuracy or a different input voltage range.

The MAX1196 features parallel, multiplexed, CMOS-

compatible three-state outputs. The digital output format

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 MAX1196 is available in a 7mm

× 7mm,

48-pin TQFP package, and is specified for the extended

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

Pin-compatible, nonmultiplexed higher speed versions of

the MAX1196 are also available. Refer to the MAX1198

data sheet for 100Msps, the MAX1197 data sheet for

60Msps, and the MAX1195 data sheet for 40Msps.

For a 10-bit, pin-compatible upgrade, refer to the

MAX1186 data sheet. With the N.C. pins of the

MAX1196 internally pulled down to ground, this ADC

becomes a drop-in replacement for the MAX1186.

Applications

Baseband I/Q Sampling

Multichannel IF Sampling

Ultrasound and Medical Imaging

Battery-Powered Instrumentation

WLAN, WWAN, WLL, MMDS Modems

Set-Top Boxes

VSAT Terminals

Features

o Single 2.7V to 3.6V Operation

o Excellent Dynamic Performance

48.4dB/44.7dB SINAD at fIN = 20MHz/200MHz

68.9dB/53dBc SFDR at fIN = 20MHz/200MHz

o -72dB Interchannel Crosstalk at fIN = 20MHz

o Low Power

87mW (Normal Operation)

9mW (Sleep Mode)

0.3µW (Shutdown Mode)

o 0.05dB Gain and ±0.05° 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 User-Selectable Output Format—Two’s

Complement or Offset Binary

o Pin-Compatible 8-Bit and 10-Bit Upgrades

Available

Dual 8-Bit, 40Msps, 3V, Low-Power ADC with

Internal Reference and Multiplexed Parallel Outputs

________________________________________________________________ Maxim Integrated Products

1

N.C.

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

TQFP-EP

MAX1196

PART

TEMP RANGE

PIN-PACKAGE

MAX1196ECM

-40

°C to +85°C

48 TQFP-EP*

Pin Configuration

Ordering Information

19-2600; Rev 0; 9/02

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.

*EP = Exposed pad.

Functional Diagram appears at end of data sheet.

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