TDA8769 データシートの表示（PDF） - Philips Electronics

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TDA8769

12-bit, 60/80/105 Msps Analog-to-Digital Converter (ADC) Nyquist/high IF sampling

Philips Electronics 

Philips Semiconductors

12-bit, 60/80/105 Msps Analog-to-Digital Converter

(ADC) Nyquist/high IF sampling

Objective specification

TDA8769

1 FEATURES

• 12-bit resolution

• Optimized for both Nyquist and high IF sampling

• High-speed sampling rate up to 105 MHz

• Maximum analog input frequency of 330 MHz (see

Application section)

• Only 2 clock cycles latency

• 5 V power supplies and 3.3 V output power supply

• Binary or two’s-complement CMOS outputs

• Programmable Complete Conversion Signal (CCS)

CMOS output

• In-range CMOS compatible output

• CMOS compatible static digital inputs

• LVTTL and LVCMOS compatible digital outputs

• Differential clock input PECL; sine wave and TTL

compatible

• Integrated track-and-hold amplifier

• Differential analog input

• External amplitude range control

• Full-scale controllable from 1.5 to 1.9 V (p-p)

• Voltage controlled regulator included

• Temperature range from −40 to +85 °C.

2 APPLICATIONS

• Cellular infrastructure (2.5G, 3G, etc.)

• Base stations and “Zero-IF” or direct IF sampling

subsystems

• Wireless and wired broadband communications

• Wireless Local Loop (WLL)

• Local Multipoint Distribution Service (LMDS)

• Advanced Frequency Modulation (FM) radio

• Imaging (camera scanner and medical)

• Cable modem or set top box

• Radar and satellite hub systems.

3 GENERAL DESCRIPTION

The TDA8769 is a BiCMOS 12-bit Analog-to-Digital

Converter (ADC) optimized for GSM/EDGE, W-CDMA and

CDMA2000 radio transceivers, high data rate radios and

other applications such as advanced FM radio and

professional imaging. Its main innovation is the RF

sampling, based on a high-speed clock of up to 105 Msps

combined with high input frequencies of up to 250 MHz.

It converts the analog input signal into 12-bit binary coded

digital words at a maximum sampling rate of 105 MHz.

The TDA8769 analog performances have been proven in

various multi-carrier 3G radio receivers, providing the

best-in-class Adjacent Channel Selectivity (ACS) up to

80 dB.

Moreover the TDA8769 offers the lowest clock cycle

latency, which enables competitive and optimized

feedback loops in controlled systems.

All static digital inputs (TH, CEN, OTC, DEL0 and DEL1)

are CMOS compatible and all outputs are LVTTL and

LVCMOS compatible. A sine wave clock input signal can

also be used.

4 QUICK REFERENCE DATA

Tbf.

5 ORDERING INFORMATION

TYPE NUMBER

NAME

PACKAGE

DESCRIPTION

TDA8769HW/6

TDA8769HW/8

TDA8769HW/10

HTQFP48 plastic thermal enhanced thin quad flat package;

48 leads; body 7 × 7 × 1.0 mm; heatsink

VERSION

SOT545-2

SAMPLING

FREQUENCY

(MHz)

60

80

105

2003 Dec 09

3

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