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參數(shù)資料
| 型號： | HT9142-20TSSOP-A |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 97K |
| 代理商： | HT9142-20TSSOP-A |
Pin Description
Pin No.
Pin Name
I/O
Description
1
OSCI
I
These pins are connected to the external parts of an oscillating circuit.
2
OSCO
O
3
MIXO
O
Mixer output pin. Connect a 455kHz ceramic filter between this pin and the IFIN pin.
4
VCC
Positive power supply
5
IFIN
I
Input terminal for IF Amp.
6
DEC
I
Bias Decoupling
7
FSKR
I
Reference input of differential amplifier for waveform shaping. Connect the capacitor
externally.
8
IFO
O
IF Amplifier Output pin. Connect the discriminator through the coupling capacitor.
9
QUAD
I
FM demodulator phase shift input pin connected to a quadrature detector phase
shifter.
10
AFO
O
FM demodulator output pin
11
LPFI
I
Low Pass Filter Input pin
12
LPFO
O
Low Pass Filter Output pin
13
BS
I
Battery-saving Control pin
H Normal Operation
L Battery-saving
14
CHG
I
Control pin for quick charge-discharge circuit.
H turn on quick charge-discharge
L turn off quick charge-discharge
15
FSKO
O
FSK NRZ data output
16
ALM
O
Output pin for Low Voltage Alarm
At V
CC
1.1V, this pin becomes H ( V
CC
) and can indicate deterioration of battery.
17
REGC
O
Control pin of external transistor for regulator of external power supply.
Externally connect the PNP transistor
18
REGO
O
Output voltage monitoring pin of regulator for external power supply.
19
GND
Negative power supply, ground
20
MIXI
I
MIXER Input terminal
Absolute Maximum Ratings
Power Supply Voltage........................V
CC
0.3V to 4.0V
Power Dissipation..............................................730mW
Operating Temperature range.....................0 C to 45 C
Storage Temperature............................ 55 C to 150 C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
HT9142
Rev. 1.10
2
July 31, 2002
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| HT9170B(18DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm |
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