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PDF LS1691BM Data sheet ( Hoja de datos )
| Número de pieza | LS1691BM | |
| Descripción | FM/AM RADIO CIRCUIT | |
| Fabricantes | LIGHTNING Semiconductor | |
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LIGHTNING
Semiconductor
Devices
LS1691BM
FM/AM RADIO CIRCUIT
DESCRIPTION
The LS1691BM is a one-chip FM/AM radio IC
designed for radio -cassette tape recorders and
headphone tape recorders.
Outline Drawing
FEATURE
l Small number of peripheral components
l Low current consumption (Vcc=3V)
FM: ID=5.3mA (Typ.)
AM: ID=3.4mA(Typ.)
l Built-in FM/AM select switch
l Large output of AF amplifier
LS1691BM
FUNCTIONS
FM section
l RF amplifier; Mixer and OSC
(in corporating AFC variable capacitor);
l IF amplifier,
l Quadrature detection;
l Tuning LED driver.
AM section
l RF amplifier, Mixer and OSC (with RF AGC);
l IF amplifier (with IF AGC)
l Detector
l Tuning LED driver
AF section
l Electronic volume control
l FM muting
This Data Sheet is subject to change without notice
1/9
1 page  
LIGHTNING
Semiconductor
Devices
PIN CONFIGURATIONS
LS1691BM
Pin Symbol
Description
Voltage (V)
Vcc=3V Vcc=6V
FM AM FM AM
24
AF IN
Power amplifier
input pin
0
0
0
0
25
RIPPLE
FILTER
Ripple filter
2.71 2.71 5.4 5.4
Equivalent circuit
11K
24
*4 *4
75K
82K
GND
Vcc
17K
25
73K
90K
26 Vcc Power supply pin 3.0 3.0 6.0 6.0
28 GND
Power GND
0 00 0
* Note: The pin voltage of pin 6 during AM, it is the same pin voltage of pin22 during
J BAND and is the same pin voltage of pin21 during W BAND.
ABSOLUTE MAXIMUM RATINGS (Ta=25 °C)
Characteristic
Supply Voltage
Allowable power dissipation
Operating temperature
Storage Temperature
Symbol
Vcc
PD
Topr
Tstg
RECOMMENDED OPERATING CONDITIONS
Value
14
700
-10~60
-50~125
Unit
V
mW
°C
°C
Parameter
Supply voltage
Symbol
Vcc
Value
2~7.5
Unit
V
This Data Sheet is subject to change without notice
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet LS1691BM.PDF ] | |
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