參數(shù)資料
型號(hào): NJM2597V
廠商: New Japan Radio Co., Ltd.
英文描述: 455kHz INPUT FM IF DEMODULATOR
中文描述: 455kHz輸入FM IF解調(diào)器
文件頁數(shù): 1/16頁
文件大小: 248K
代理商: NJM2597V
Ver.2004-08-25
NJM2590/97
- 1 -
455kHz INPUT FM IF DEMODULATOR
GENERAL DESCRIPTION
PACKAGE OUTLINE
The
NJM2590 and NJM2597
are low current FM IF demodulator
ICs with 455kHz IF input, which operate from 1.6V supply.
The
NJM2590/97
contain the minimum functions required to
FM IF demodulator, that is, IF amplifier, quadrature detector,
LPF amplifier, FSK comparator, RSSI, and RSSI comparator.
It offers unmatched design flexibility.
FEATURES
z
Low Operating Voltage 1.6V to 5.5V
z
Low Operating Current 550uA at V
+
=1.8V
z
IF Input Frequency 455kHz (standard)
z
RSSI Comparator
z
The Range of Linear Area on RSSI Output versus IF Input Characteristics
NJN2590 IF Input level=25 to 60 dBuVEMF (reference value)
NJM2597 IF Input level=35 to 85 dBuVEMF (reference value)
z
Bipolar Technology
z
Package Outline SSOP14
BLOCK DIAGRAM
NJM2590V/97V
V
+
IF IN
14
13
12
11
10
9
8
1
2
4
3
5
6
7
QUAD DET
RSSI
FSK
OUT
CHARGE
GND
DEC
FSK
REF
QUAD
IN
AF
OUT
LPF
IN
LPF
OUT
LPF
RSSI
OUT
RSSI
COMP
SENSE
LEVEL
CARRIER
SENSE
CHARGE
IF AMP
FSK
COMP
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