MAXIM MAX1197 Dual, 8-Bit, 60Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs

19-2411; Rev 0; 4/02

Dual, 8-Bit, 60Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs General Description Features The MAX1197 is a 3V, dual, 8-bit analog-to-digital con- Single 2.7V to 3.6V Operation verter (ADC) featuring fully differential wideband track-

Excellent Dynamic Performance

and-hold (T/H) inputs, driving two ADCs. The MAX1197

48.5d B/45.3d B SINAD at f IN = 30MHz/200MHz

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

ic performance for applications in imaging, instrumenta- 69d Bc/53.5d Bc SFDR at f IN = 30MHz/200MHz

tion and digital communications. This ADC operates -72d B Interchannel Crosstalk at f IN = 20MHz from a single 2.7V to 3.6V supply, consuming only

Low Power

120m W while delivering a typical signal-to-noise and

120m W (Normal Operation)

distortion (SINAD) of 48.5d B at an input frequency of

9m W (Sleep Mode)

30MHz and a sampling rate of 60Msps. The T/H-driven

0.3µW (Shutdown Mode)

input stages incorporate 400MHz (-3d B) input ampli-

fiers. The converters may also be operated with single- 0.05d B Gain and ±0.05° Phase Matching

ended inputs. In addition to low operating power, the

Wide ±1VP-P Differential Analog Input Voltage

MAX1197 features a 3m A sleep mode as well as a

Range

0.1µA power-down mode to conserve power during idle

400MHz -3d B Input Bandwidth

periods.

An internal 2.048V precision bandgap reference sets On-Chip 2.048V Precision Bandgap Reference

the full-scale range of the ADC. A flexible reference

User-Selectable Output Format—Two’s

structure allows the use of this internal or an externally

Complement or Offset Binary

applied reference, if desired, for applications requiring

Pin-Compatible 8-Bit and 10-Bit Upgrades

increased accuracy or a different input voltage range.

GN RE FN

Available

The MAX1197 features parallel, CMOS-compatible three- RE FP state outputs. The digital output format can be set to two’s RE FI

Ordering Information

complement or straight offset binary through a single con- GN RE FO UT T/ D7

trol pin. The device provides for a separate output power PART TEMP RANGE PIN-PACKAGE

SL EE D6

supply of 1.7V to 3.6V for flexible interfacing with various MAX1197ECM -40°C to +85°C 48 TQFP-EP*

PD D5

logic families. The MAX1197 is available in a 7mm x 7mm,

OE D4 *EP = Exposed paddle

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

D7 D3 Functional Diagram and Pin Compatible Upgrades table

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

appear at end of data sheet.

Pin-compatible lower and higher speed versions of the D5 D1

D4 D0 Pin Configuration

MAX1197 are also available. Refer to the MAX1195 data sheet for 40Msps 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 inter- leaved and on a single, parallel 8-bit output port.

COM N.C.

For a 10-bit, pin-compatible upgrade, refer to the VDD N.C. MAX1182 data sheet. With the N.C. pins of the GND OGND

MAX1197 internally pulled down to ground, this ADC INA+ OVDD becomes a drop-in replacement for the MAX1182. INA- OVDD VDD OGND

MAX1197

Applications GND N.C. INB- N.C.

Baseband I/Q Sampling WLAN, WWAN, WLL, INB+ D0B

MMDS Modems GND D1B

Multichannel IF Sampling

VDD D2B

Set-Top Boxes

Ultrasound and Medical CLK D3B Imaging VSAT Terminals Battery-Powered Instrumentation

TQFP-EP

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.