AD9627ABCPZ-150 Ver la hoja de datos (PDF) - Analog Devices

Número de pieza

componentes Descripción

Fabricante

AD9627ABCPZ-150

12-Bit, 80 MSPS/105 MSPS/125 MSPS/150 MSPS, 1.8 V Dual Analog-to-Digital Converter

Analog Devices 

AD9627

GENERAL DESCRIPTION

The AD9627 is a dual, 12-bit, 80 MSPS/105 MSPS/125 MSPS/

150 MSPS analog-to-digital converter (ADC). The AD9627 is

designed to support communications applications where low

cost, small size, and versatility are desired.

The dual ADC core features a multistage, differential pipelined

architecture with integrated output error correction logic. Each

ADC features wide bandwidth differential sample-and-hold

analog input amplifiers supporting a variety of user-selectable

input ranges. An integrated voltage reference eases design consid-

erations. A duty cycle stabilizer is provided to compensate for

variations in the ADC clock duty cycle, allowing the converters

to maintain excellent performance.

The AD9627 has several functions that simplify the automatic

gain control (AGC) function in the system receiver. The fast detect

feature allows fast overrange detection by outputting four bits of

input level information with very short latency.

In addition, the programmable threshold detector allows moni-

toring of the incoming signal power, using the four fast detect

bits of the ADC with very low latency. If the input signal level

exceeds the programmable threshold, the coarse upper threshold

indicator goes high. Because this threshold indicator has very

low latency, the user can quickly turn down the system gain to

avoid an overrange condition.

The second AGC-related function is the signal monitor. This block

allows the user to monitor the composite magnitude of the

incoming signal, which aids in setting the gain to optimize the

dynamic range of the overall system.

The ADC output data can be routed directly to the two external

12-bit output ports. These outputs can be set from 1.8 V to 3.3 V

CMOS or 1.8 V LVDS.

Flexible power-down options allow significant power savings,

when desired.

Programming for setup and control is accomplished using a 3-bit

SPI-compatible serial interface.

The AD9627 is available in a 64-lead LFCSP and is specified over

the industrial temperature range of −40°C to +85°C.

Rev. B | Page 4 of 76

Share Link: