SA637

更新时间： 2024-11-02 22:43:35

品牌	Logo	应用领域
恩智浦 - NXP		接收机
页数	文件大小	规格书
11页	146K
描述
Low-voltage digital IF receiver

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SA637 数据手册

Philips Semiconductors RF Communications Products

Product specification

Low-voltage digital IF receiver

SA637

DESCRIPTION

FEATURES

PIN CONFIGURATION

The SA637 is a low-voltage high performance

monolithic digital system with high-speed

RSSI incorporating a mixer, oscillator with

buffered output, two limiting intermediate

frequency amplifiers, fast logarithmic

received signal strength indicator (RSSI),

voltage regulator, RSSI op amp and power

down pin. The SA637 is available in SSOP

(shrink small outline package).

• V = 2.7 to 5.5V

DK Packages

• Low power receiver (3.8mA @ 3V)

MIXER

OUTPUT

IF AMP

DECOUP

• Power down mode (I = 110µA)

• Fast RSSI rise and fall times

OSC E

OSC B

IF AMP IN

• Extended RSSI range with temperature

IF AMP

DECOUP

compensation

OSC

BUFFER

IF AMP OUT

GND

• RSSI op amp

The SA637 was designed for portable digital

communication applications and will function

down to 2.7V. The limiter amplifier has

differential outputs with 2MHz small signal

bandwidth. The RSSI output has access to

the feedback pin. This enables the designer

to level adjust the outputs or add filtering.

• 2MHz limiter small signal bandwidth

• 455kHz filter matching (1.5kΩ)

• Differential limiter output

• Oscillator buffer

RSSI

LIMITER IN

LIMITER

DECOUP

LIMITER

DECOUP

RSSI

FEEDBACK

POWER

DOWN

LIM OUT (-)

LIM OUT (+)

• SSOP-20 package

APPLICATIONS

• ADC (American Digital Cellular)

• Digital receiver systems

• Cellular radio

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE RANGE

-40 to +85°C

ORDER CODE

DWG #

20-Pin Plastic Shrink Small Outline Package (Surface-mount)

SA637DK

1563

BLOCK DIAGRAM

GND

AMP

LIMITER

MIXER

FAST RSSI

OSCILLATOR

–

POWER

DOWN

–

October 27, 1993

853-1718 11205

12 3 4 5 6 7...11

中文翻译

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