MAX1195 datasheet(1/22 Pages) MAXIM | Dual, 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs

Part No.	MAX1195

Description	Dual, 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs

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Manufacturer	MAXIM [Maxim Integrated Products]

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General Description

The MAX1195 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 MAX1195

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

performance for applications in imaging, instrumentation

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 distortion (SINAD)

of 48.5dB at an input frequency of 20MHz and a sam-

pling rate of 40Msps. The T/H-driven input stages incor-

porate 400MHz (-3dB) input amplifiers. The converters

may also be operated with single-ended inputs. In addi-

tion to low operating power, the MAX1195 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 MAX1195 features parallel, CMOS-compatible three-

state outputs. The digital output format can be set to two’s

complement or straight offset binary through a single con-

trol pin. The device provides for a separate output power

supply of 1.7V to 3.6V for flexible interfacing with various

logic families. The MAX1195 is available in a 7mm x 7mm,

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

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

Pin-compatible higher speed versions of the MAX1195

are also available. Refer to the MAX1197 data sheet for

60Msps and the MAX1198 data sheet for 100Msps. In

addition to these speed grades, this family will include a

multiplexed output version (MAX1196, 40Msps), for

which digital data is presented time interleaved and on

a single, parallel 8-bit output port.

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

MAX1183 data sheet. With the N.C. pins of the MAX1195

internally pulled down to ground, this ADC becomes a

drop-in replacement for the MAX1183.

Applications

Features

o Single 2.7V to 3.6V Operation

o Excellent Dynamic Performance

48.5dB/46.7dB SINAD at fIN = 20MHz/200MHz

68.7dBc/55.7dBc 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 Parallel Outputs

________________________________________________________________ Maxim Integrated Products

1

N.C.

OGND

OVDD

OGND

N.C.

D0B

D1B

D2B

D3B

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

MAX1195

Pin Configuration

Ordering Information

19-2410; Rev 0; 4/02

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.

Functional Diagram and Pin Compatible Upgrades table

appear at end of data sheet.

*EP = Exposed paddle

Baseband I/Q Sampling

Multichannel IF Sampling

Ultrasound and Medical

Imaging

Battery-Powered

Instrumentation

WLAN, WWAN, WLL,

MMDS Modems

Set-Top Boxes

VSAT Terminals

PART

TEMP RANGE

PIN-PACKAGE

MAX1195ECM

-40

°C to +85°C

48 TQFP-EP*

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