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參數(shù)資料
| 型號(hào)： | RX3141 |
| 英文描述： | Mouse. Pager. |
| 中文描述： | 鼠標(biāo)。傳呼機(jī)。 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 167K |
| 代理商： | RX3141 |
RX3141
the wireless IC company
Revision C
Page 4
October 2000
Pin Descriptions
Number
Name
I/O
Description
1
OSCIN
I
Oscillator input (base)
2
OSCOUT
O
Oscillator output (emitter)
3
MIXOUT
O
Mixer output (2 K
output impedance)
4
VCC
POWER
Nominal 1.4 V supply
5
IFIN
I
IF amplifier input (2 K
input impedance)
6
DEC
I
IF amplifier de-coupling capacitor connection
7
FSKREF
I
1-bit comparator reference input (requires external capacitor)
8
QUAD
I
Quadrature FM demodulator input
9
AFOUT
O
Quadrature FM demodulator output
10
RSSI
O
RSSI voltage output
11
LPFIN
I
LPF operational amplifier input
12
LPFOUT
O
LPF operational amplifier output
13
BS
I
Two-state logic input to control receiver power up/down.
(BS = high = normal operation; BS = low = stand-by mode)
14
CHARGE
I
Two-state logic input to control charge-discharge circuit.
(CHARGE = high = fast charge; CHARGE = low = slow charge)
15
FSKOUT
O
Open collector NRZ comparator output (requires pull-up resistor)
16
ALM
O
Open collector low battery alarm output (requires pull-up resistor)
17
REGCON
O
1.0 V regulator control output for connection to external PNP base
18
REGOUT
I
1.0 V regulator input for connection to external PNP collector
19
VSS
GND
Ground
20
MIXIN
I
Mixer input (5 K
input impedance)
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