Rainbow-electronics MAX1211 Bedienungsanleitung PDF herunterladen

General Description

The MAX1211 is a 3.3V, 12-bit analog-to-digital convert-

er (ADC) featuring a fully differential wideband track-

and-hold (T/H) input, driving the internal quantizer. The

MAX1211 is optimized for low power, small size, and

high dynamic performance in intermediate frequency

(IF) sampling applications. This ADC operates from a

single 3.0V to 3.6V supply, consuming only 340mW

while delivering a typical signal-to-noise ratio (SNR) per-

formance of 66.8dB at a 175MHz input frequency. The

T/H-driven input stage accepts single-ended or differen-

tial inputs. In addition to low operating power, the

MAX1211 features a 0.15mW power-down mode to con-

serve power during idle periods.

A flexible reference structure allows the MAX1211 to

use its internal precision bandgap reference or accept

an externally applied reference. A common-mode refer-

ence is provided to simplify design and reduce external

component count in differential analog input circuits.

The MAX1211 supports both a single-ended and differ-

ential input clock drive. Wide variations in the clock

duty cycle are compensated with the ADC’s internal

duty-cycle equalizer.

The MAX1211 features parallel, CMOS-compatible out-

puts. The digital output format is pin selectable to be

either two’s complement or Gray code. A data-valid indi-

cator eliminates external components that are normally

required for reliable digital interfacing. A separate power

input for the digital outputs accepts a voltage from 1.7V

to 3.6V for flexible interfacing with various logic levels.

The MAX1211 is available in a 6mm x 6mm x 0.8mm, 40-

pin thin QFN package with exposed paddle (EP), and is

specified for the extended industrial (-40°C to +85°C)

temperature range.

Applications

IF and Baseband Communication Receivers

Cellular, LMDS, Point-to-Point Microwave,

MMDS, HFC, WLAN

Ultrasound and Medical Imaging

Portable Instrumentation

Low-Power Data Acquisition

Features

♦ Direct IF Sampling Up to 400MHz

♦ 700MHz Input Bandwidth

♦ Excellent Dynamic Performance

66.8dB SNR at f

= 175MHz

79.7dBc SFDR at f

= 175MHz

♦ 3.3V Low-Power Operation

314mW (Single-Ended Clock Mode)

340mW (Differential Clock Mode)

♦ Differential or Single-Ended Clock

♦ Accepts 20% to 80% Clock Duty Cycle

♦ Fully Differential or Single-Ended Analog Input

♦ Adjustable Full-Scale Analog Input Range

♦ Common-Mode Reference

♦ Power-Down Mode

♦ CMOS-Compatible Outputs in Two’s Complement

or Gray Code

♦ Data-Valid Indicator Simplifies Digital Interface

♦ Out-of-Range Indicator

♦ Miniature, 40-Pin Thin QFN Package with Exposed

Paddle

♦ Evaluation Kit Available (Order MAX1211EVKIT)

MAX1211

65Msps, 12-Bit, IF Sampling ADC

________________________________________________________________ Maxim Integrated Products 1

EXPOSED PADDLE (GND)

COM

GND

INP

INN

GND

DCE

CLKN

CLKP

REFN

REFP

GND

D11

D10

CLKTYP

REFIN

REFOUT

GND

DAV

I.C.

G/T

THIN QFN

6mm × 6mm × 0.8mm

MAX1211

DOR

TOP VIEW

Pin Configuration

Ordering Information

19-2922; Rev 1; 5/04

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.

EVALUATION KIT

AVAILABLE

PART

TEMP RANGE

PIN-PACKAGE

MAX1211ETL

-40°C to +85°C

40 Thin QFN (6mm x 6mm)

1 2 3 4 5 6 ... 29 30

Inhaltsverzeichnis

Seite 1 - Ordering Information

General DescriptionThe MAX1211 is a 3.3V, 12-bit analog-to-digital convert-er (ADC) featuring a fully differential wideband track-and-hold (T/H) input

Seite 2 - ELECTRICAL CHARACTERISTICS

MAX121165Msps, 12-Bit, IF Sampling ADC10 ______________________________________________________________________________________Typical Operating Chara

Seite 3

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 1160636261646566676869700

Seite 4

MAX121165Msps, 12-Bit, IF Sampling ADC12 ______________________________________________________________________________________30403555504570656075-40

Seite 5

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 1361646362656667686970712

Seite 6

MAX121165Msps, 12-Bit, IF Sampling ADC14 ______________________________________________________________________________________65.066.566.065.567.067.

Seite 7 - MAX1211 toc04

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 15SIGNAL-TO-NOISE RATIOvs

Seite 8 - MAX1211 toc06

MAX121165Msps, 12-Bit, IF Sampling ADC16 ______________________________________________________________________________________Pin DescriptionPIN NAME

Seite 9 - MAX1211 toc12

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 17Pin Description (contin

Seite 10 - MAX1211 toc16

Detailed DescriptionThe MAX1211 uses a 10-stage, fully differential,pipelined architecture (Figure 1) that allows for high-speed conversion while mini

Seite 11 - MAX1211 toc20

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 19power-down. The referen

Seite 12 - MAX1211 toc24

MAX121165Msps, 12-Bit, IF Sampling ADC2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATING

Seite 13 - MAX1211 toc28

MAX121165Msps, 12-Bit, IF Sampling ADC20 ______________________________________________________________________________________Low clock jitter is req

Seite 14 - MAX1211 toc32

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 21GRAY CODEOUTPUT CODE(G/

Seite 15 - MAX1211 toc36

MAX121165Msps, 12-Bit, IF Sampling ADC22 ______________________________________________________________________________________Keep the capacitive loa

Seite 16 - Pin Description

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 23BINARY-TO-GRAY CODE CON

Seite 17 - Pin Description (continued)

MAX121165Msps, 12-Bit, IF Sampling ADC24 ______________________________________________________________________________________Keep the capacitive loa

Seite 18 - Detailed Description

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 25Single-Ended AC-Coupled

Seite 19 - Table 1. Reference Modes

MAX121165Msps, 12-Bit, IF Sampling ADC26 ______________________________________________________________________________________Grounding, Bypassing, a

Seite 20 - System Timing Requirements

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 2721.5kΩ1% 21.5kΩ1% 21.5k

Seite 21

Route high-speed digital signal traces away from thesensitive analog traces. Keep all signal lines short andfree of 90° turns.Ensure that the differen

Seite 22 - GRAY OUTPUT CODE (LSB)

MAX121165Msps, 12-Bit, IF Sampling ADC______________________________________________________________________________________ 29Signal-to-Noise Plus Di

Seite 23

MAX121165Msps, 12-Bit, IF Sampling ADC_______________________________________________________________________________________ 3ELECTRICAL CHARACTERIST

Seite 24 - Applications Information

MAX121165Msps, 12-Bit, IF Sampling ADCMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim pr

Seite 25 - Multiple ADCs

MAX121165Msps, 12-Bit, IF Sampling ADC4 _______________________________________________________________________________________ELECTRICAL CHARACTERIST

Seite 26

MAX121165Msps, 12-Bit, IF Sampling ADC_______________________________________________________________________________________ 5ELECTRICAL CHARACTERIST

Seite 27

MAX121165Msps, 12-Bit, IF Sampling ADC6 _______________________________________________________________________________________ELECTRICAL CHARACTERIST

Seite 28 - Parameter Definitions

MAX121165Msps, 12-Bit, IF Sampling ADC_______________________________________________________________________________________ 7Typical Operating Chara

Seite 29 - Chip Information

65Msps, 12-Bit, IF Sampling ADC8 _______________________________________________________________________________________Typical Operating Characterist

Seite 30 - Package Information

MAX121165Msps, 12-Bit, IF Sampling ADC_______________________________________________________________________________________ 9Typical Operating Chara

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Rainbow-electronics MAX1211 Bedienungsanleitung

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Inhaltsverzeichnis

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