Rainbow-electronics MAX1127 Bedienungsanleitung PDF herunterladen

General Description

The MAX1127 quad, 12-bit analog-to-digital converter

(ADC) features fully differential inputs, a pipelined

architecture, and digital error correction. This ADC is

optimized for low-power, high-dynamic performance for

medical imaging, communications, and instrumentation

applications. The MAX1127 operates from a 1.7V to

1.9V single supply and consumes only 563mW while

delivering a 69.6dB signal-to-noise ratio (SNR) at a

19.3MHz input frequency. In addition to low operating

power, the MAX1127 features a 675µA power-down

mode for idle periods.

An internal 1.24V precision bandgap reference sets the

ADC’s full-scale range. A flexible reference structure

allows the use of an external reference for applications

requiring increased accuracy or a different input volt-

age range.

A single-ended clock controls the conversion process.

An internal duty-cycle equalizer allows for wide varia-

tions in input-clock duty cycle. An on-chip phase-

locked loop (PLL) generates the high-speed serial

low-voltage differential signaling (LVDS) clock.

The MAX1127 provides serial LVDS outputs for data,

clock, and frame alignment signals. The output data is

presented in two’s complement or binary format.

Refer to the MAX1126 data sheet for a pin-compatible

40Msps version of the MAX1127.

The MAX1127 is available in a small, 10mm x 10mm x

0.9mm, 68-pin QFN package with exposed paddle and

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

temperature range.

Applications

Ultrasound and Medical Imaging

Positron Emission Tomography (PET) Imaging

Multichannel Communication Systems

Instrumentation

Features

♦ Four ADC Channels with Serial LVDS/SLVS

Outputs

♦ Excellent Dynamic Performance

69.6dB SNR at f

= 19.3MHz

92dBc SFDR at f

= 19.3MHz

-87dB Channel Isolation

♦ Ultra-Low Power

135mW per Channel (Normal Operation)

1.2mW Total (Shutdown Mode)

♦ Accepts 20% to 80% Clock Duty Cycle

♦ Self-Aligning Data-Clock to Data-Output Interface

♦ Fully Differential Analog Inputs

♦ Wide ±1.4V

P-P

Differential Input Voltage Range

♦ Internal/External Reference Option

♦ Test Mode for Digital Signal Integrity

♦ LVDS Outputs Support Up to 30in FR-4 Backplane

Connections

♦ Small, 68-Pin QFN with Exposed Paddle

♦ Evaluation Kit Available (MAX1127EVKIT)

MAX1127

Quad, 12-Bit, 65Msps, 1.8V ADC with

Serial LVDS Outputs

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3144; Rev 1; 3/04

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.

PART TEMP RANGE PIN-PACKAGE

MAX1127EGK -40°C to +85°C

68 QFN 10mm x

x 10mm x 0.9mm

35 OUT3N

36 OUT3P

37 OV

38 OUT2N

39 OUT2P

40 OV

41 FRAMEN

FRAMEP

CLKOUTN

45 CLKOUTP

46 OV

47 OUT1N

48 OUT1P

49 OV

50 OUT0N

51 OUT0P

PD0

PD1

PD2

PD3

PDALL

6364

LVDSTEST

GND

REFIO

6768

GND

1GND

2IN0P

3IN0N

4GND

5IN1P

6IN1N

7GND

8AV

9AV

10AV

11GND

12IN2P

13IN2N

14GND

15IN3P

16IN3N

17GND

I.C.

GND

CLK

GND

29 30

PLL0

PLL1

PLL2

PLL3

SLVS/LVDS

INTREF

T/B

MAX1127

QFN

10mm x 10mm x 0.9mm

Pin Configuration

1 2 3 4 5 6 ... 24 25

Serial LVDS Outputs 1

Inhaltsverzeichnis

Seite 1 - Serial LVDS Outputs

General DescriptionThe MAX1127 quad, 12-bit analog-to-digital converter(ADC) features fully differential inputs, a pipelinedarchitecture, and digital

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MAX1127Quad, 12-Bit, 65Msps, 1.8V ADC with Serial LVDS Outputs 10 ____________________________________________________________________________________

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