MAX108(1999) Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

MAX108
(Rev.:1999)

±5V, 1.5Gsps, 8-Bit ADC with On-Chip 2.2GHz Track/Hold Amplifier

Maxim Integrated 

±5V, 1.5Gsps, 8-Bit ADC with

On-Chip 2.2GHz Track/Hold Amplifier

BANDGAP

REFERENCE

REF REF

OUT IN

+2.5V

REFERENCE

AMPLIFIER

VOSADJ

GNDI

50Ω

VIN+

VIN-

50Ω

GNDR

BIAS CURRENTS

T/H AMPLIFIER

CLK+

CLKCOM

CLK-

GNDI

50Ω

50Ω

T/H

CLOCK

DRIVER

ADC

CLOCK

DRIVER

MAX108

8-BIT

2

FLASH ADC

16

LOGIC

CLOCK

DRIVER

DIFFERENTIAL

PECL OUTPUTS

OVERRANGE

OR

BIT

2

AUXILIARY

DATA PORT

16

A0–A7

PRIMARY

P0–P7

DATA PORT

16

DATA

READY CLOCK 2

DREADY

DEMUX

CLOCK

DRIVER

RSTIN+

RSTIN-

RESET

INPUT DUAL LATCH

RESET

PIPELINE

DELAYED

RESET

DEMUX

CLOCK

GENERATOR

DEMUXEN DIVSELECT

DEMUX

RESET OUTPUT 2

RSTOUT

Figure 1. Simplified Functional Diagram

_______________Detailed Description

The MAX108 is an 8-bit, 1.5Gsps flash analog-to-digital

converter (ADC) with on-chip T/H amplifier and differ-

ential PECL-compatible outputs. The ADC (Figure 1)

employs a fully differential 8-bit quantizer and a unique

encoding scheme to limit metastable states, with no

error exceeding 1LSB max.

An integrated 8:16 output demultiplexer simplifies inter-

facing to the part by reducing the output data rate to

one-half the sampling clock rate. This demultiplexer

has internal reset capability that allows multiple

MAX108s to be time-interleaved to achieve higher

effective sampling rates.

When clocked at 1.5Gsps, the MAX108 provides a typi-

cal ENOB of 7.5 bits at an analog input frequency of

750MHz. The analog input of the MAX108 is designed

for differential or single-ended use with a ±250mV full-

scale input range. In addition, this fast ADC features an

on-chip +2.5V precision bandgap reference. If desired,

an external reference can also be used.

12 ______________________________________________________________________________________

Share Link: