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參數(shù)資料
| 型號(hào)： | RX3140 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | RX3140 Low Power IF Receiver IC |
| 中文描述： | RX3140低功耗中頻接收機(jī)芯片 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 233K |
| 代理商： | RX3140 |
Revision B
Page 1
May 2000
RX3140 Low Power IF Receiver IC
HiMARK Technology, Inc. reserves the right to change the product described in this datasheet. All information con-
tained in this datasheet is subject to change without prior notice. HiMARK Technology, Inc. assumes no responsibility
for the use of any circuits shown in this datasheet.
Description
The RX3140 is a low power IF receiver IC which is fully compatible with the Toshiba
TA31142 IC and is suitable for use as the second IF downconverter in double-conversion
paging systems. The RX3140 is well-suited for POCSAG paging applications and incor-
porates a 2-level FSK demodulator consisting of a quadrature FM demodulator, on-chip
bit-rate filter, and 1-bit comparator. An on-chip 1 V regulator is provided for convenient
biasing of off-chip circuitry.
Features
Extremely low power operation with power-down feature
Built-in crystal oscillator for mixer local oscillator
Mixer input frequency: 10 — 50 MHz
Quadrature detector
On-chip bit-rate filter
Audio output
1-bit comparator with open collector output
1 V regulator
1.1 V low battery alarm
SSOP-20 package (0.65 mm pitch)
Block Diagram
the wireless IC company
1.0 V
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
QUAD
MIX
IN
VSS
REG
OUT
REG
CON
ALM
FSK
OUT
CHA
RGE
LPF
OUT
BS
LPF
IN
OSC
IN
OSC
OUT
MIX
OUT
IFIN
VCC
DEC
FSK
REF
LOW
BATTERY
ALARM
1-BIT
COMPARATOR
CHARGE/
DISCHARGE
CIRCUIT
IFAMP
QUAD
DETECTOR
MIXER
OSCILLATOR
REGULATOR
AF
OUT
IF
OUT
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