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U4311B-FS PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 U4311B-FS
기능 Low-Current Superhet Remote Control Receiver
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U4311B-FS 데이터시트, 핀배열, 회로
U4311B-FS
Low-Current Superhet Remote Control Receiver
Description
The U4311B-FS is a monolithic integrated circuit in
bipolar technology for low-current UHF remote control
super-heterodyne receivers in amplitude- or frequency-
modulated mode. Typical applications are keyless car
lock-, alarm- or tele-control remote indication systems.
Especially for automotive applications, it supports a
superhet design with about 1 mA total current
consumption as required by the car manufacturers.
Features
D Usable for amplitude- and frequency-modulated
transmission systems
D Extremely low quiescent current (approximately
1 mA in standby mode due to wake-up concept)
D Wide power supply voltage range 3 to 13 V
D Sensitive IF amplifier for 10.7-MHz operating
frequency
Block Diagram
D Logarithmic AM demodulator
D FM demodulator
D Monoflop output to wake up a microcontroller
D High-performance operational amplifier to realize a
data recovering filter
D Non-inverting clamping comparator with amplitude-
depending hysteresis for data regeneration
Wake-up out
VRef = 2.4V 17
VS
19
Bandgap
15
Internal
VRef = 2.4 V
13 3 9 7
Monoflop
RF
Level
Wake up
Non – invert.
clamping
comparator
6 Data out
10.7 MHz
12
IF
amplifier
Quadrature
detector
Operational
amplifier
2
5 11 16
log AM out
18 20
FM out
+
1
12648
10.7 MHz
Data
filter
Figure 1. Block diagram
Ordering Information
Extended Type Number
U4311B-MFSG3
Package
SSO20
Remarks
Ambient temperature up to +105°C
Rev. A3, 28-Sep-00
1 (13)
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U4311B-FS pdf, 반도체, 판매, 대치품
U4311B-FS
Electrical Characteristics (continued)
VS = 5 V, Tamb = 25°C, fin = 10.7 MHz; FM part: fmod = 1 kHz, fdev = 22.5 kHz; AM part: fmod = 1 kHz, m = 100%
unless otherwise specified
Parameters
Test Conditions / Pins
Power-supply rejection
ratio
f = 50 Hz Pin 2
Clamping comparator
Typical common-mode
input voltage range
Pin 2
Maximum distortion
voltage
Output voltage
Vsignal = 100 mV,
R+ = R= 50 kW,
C+ = C= 200 nF,
fdisto = 50 Hz,
fsignal = 1 kHz
Pin 2
V2 > (V7 + V9) /2
(10-kW load to VRef)
Pin 6
Output voltage
V2 < (V7 + V9 ) /2
(10-kW load to VRef)
Pin 6
Wake-up circuit
Minimum wake-up level
Pin 12
Internal charging resistor
Pin 3
Threshold voltage
Pin 3
Output switch current
Pin 13
Output switch voltage
Pin 13
External wake-up resistor
Pins 3 and 17
External wake-up capacitor
Pins 3 and 17
Hold time (± 30%)
Delay time (± 30%)
Symbol
psrr
Vcmvr
Vdmax
Vcout
Vcout
Vin
Rint
Vth
ISW
VSW
RWU
CWU
th
td
Min. Typ. Max. Unit
65 85
dB
0.8 1.6 V
200 mV
VRef
V
0 150 250 mV
40
1.5
1.6
180 250 550
5.5
22
10
 1.5 RWU CWU
 CWU 0.75 kW
dBmV 1)
kW
V
mA
V 2)
kW
mF
s 3)
s 3)
1) Measured at Pin 9, (12) referred to 330 W
2) Protected by a Z-diode, see figure 13
3) Valid for 0.1 mF CWU 10 mF and 22 kW RWU 680 kW
4 (13)
Rev. A3, 28-Sep-00
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U4311B-FS 전자부품, 판매, 대치품
9 17
VRef
2
12657
Figure 10. Pin 9 RC+
17
VRef
12658
11
Figure 11. Pin 11 AMout
12659
12
Figure 12. Pin 12 IFin
Rev. A3, 28-Sep-00
U4311B-FS
12660
13
Figure 13. Pin 13 SWout
15
12661
Figure 14. Pin 15 GND1
16
12662
Figure 15. Pin 16 Discr
7 (13)
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전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

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부품번호상세설명 및 기능제조사
U4311B-FS

Low-Current Superhet Remote Control Receiver

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