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부품번호 | U2510B 기능 |
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기능 | All-Band AM/FM Receiver and Audio Amplifier | ||
제조업체 | TEMIC Semiconductors | ||
로고 | |||
전체 15 페이지수
www.DataSheet4U.com
U2510B
All-Band AM/FM Receiver and Audio Amplifier
Description
The U2510B is an integrated bipolar one-chip AM/FM
radio circuit. It contains an FM front end with
preamplifier, FM IF and demodulator, a complete AM
receiver, an AF amplifier and a mode switch for AM, FM
and tape. This circuit is designed for clock radios and
portable radio-cassette recorders.
Features
D Superior FM strong signal behavior by using RF AGC
D Soft mute and HCC for decreasing interstation noise
in FM mode
D Excellent AFC performance (level controlled, both
polarities available)
D Level indicator (LED drive) for AM and FM
D DC mode control: AM, FM and tape
D Wide supply-voltage range and low quiescent current
D High AF output power: 1 W
D Electronic volume control
D Electronic AF bandwidth control (treble and high cut)
D Output stage for headphone and speaker drive
Block Diagram
FM ant.
FM RF
tank
FM osc.
tank
987
IF BPE
6 14 16
(Replaceable)
VS
2 26 28
FM RF
BPE
AGC
AM
ant.
AM osc.
tank
AFC
12 FM
front end
FM IF
amp.
FM
discr.
11
10
5
VRef
AFC
FM control
AGC
AM IF
AM
front end
RF AGC
amp. and
detect.
IF IF
AGC
AM
Voltage stab. AM/FM
AGC
and
mode control
Level
indic.
15 21 13 20 19 1 22
27
Power
amp.
3
25
23
24
AF preamp.
Volume 4
Mute
HCC
18
AM S2
FM Tape
VS
AFC mode
LED
VS
Figure 1. Block diagram
Treble
Vol
13912
TEMIC Semiconductor
Rev. A1, 06-Apr-98
1 (15)
U2510B
Absolute Maximum Ratings
Parameters
Supply voltage
Power dissipation
Ambient temperature range
Symbol
VS
Ptot
Tamb
Value
13
900
–20 to +75
Unit
V
mW
°C
Electrical Characteristics
VS = 6 V, Tamb = 25°C, test circuit (figure 16), unless otherwise specified
Parameters
Test Conditions / Pins Symbol Min. Typ.
Supply voltage range
VS 2.5
Oscillator stop voltage
VS 2.2
Operating temperature range
T –20
Supply quiescent current
Vi1 = Vi2 = V4 = 0;
AM (S2 = AM)
FM (S2 = FM)
TAPE (S2 = Tape)
IS
IS
IS
Regulated voltage
Pin 8
VRef
Audio amplifier Vi3 (Pin 24), test point: Vo (Pin 27) f = 1 kHz
AF measuring range: 30 Hz to 20 kHz, S2 = Tape, S4 = A, S5 = A
4.0
6.5
2.2
2.4
Input resistance
Pin 24
Rj
100
Closed loop voltage gain
GVaf1 = 20 log (Vo/Vi3)
Vi3 = 10 mV
GVaf1
40
Output voltage
Vi3 = 100 mV, S4 = B
Vo
0.7
High–end cut-off frequency
fc (–3 dB)
S5 = B
fc 13
fc 0.8
Supply-voltage rejection ratio
SVRR = 20 log (Vhum/Vo)
Vhum = 200 mV,
fhum = 200 Hz, S4 = B
SVRR
32
Noise voltage
S4 = B, Vi3 = 0 Vn 300
AF output power
THD = 10 %, RL = 8 W
VS = 4.5 V
Po 225
VS = 6.0 V
Po 400 420
VS = 9.0 V
Po 1000
Distortion
Po = 50 mW, RL = 8 W
d
0.6
"FM section, Vi2 = 60 dBm V, fi2 = 98 MHz, fm = 1 kHz, dev. = 22.5 kHz, fiIF = 10.7 MHz,
AF measuring range: 300 Hz to 20 kHz, S2 = FM, S1 = A, S6 = B, test point: VD (Pin 23)
FM front-end voltage gain
GVFM = 20 log (ViIF / Vi2)
S1 = B, Vi2 = 40 dbm V
GVFM
30
Recovered audio voltage
Pin 23
VD af
85
Detector output resistance
Detector output distortion
Pin 23
"dev. = 75 kHz
Vi2 = 60 dBm V
Vi2 = 105 dBm V
RDo
THD
THD
7.5
0.5
0.8
* U2510B-M__T: max. 6 V
Max.
9*
+75
3
1000
Unit
V
V
°C
mA
mA
mA
V
kW
dB
mV
kHz
kHz
dB
mV
mW
mW
mW
%
dB
mV
kW
%
%
4 (15)
TEMIC Semiconductor
Rev. A1, 06-Apr-98
4페이지 0
S+N(m=80%)
–20
S+N(m=30%)
–40 VS=6V
fi1=1.6MHz
–60
N fAF=1kHz
Tamb=25°C
–80
d(m=80%)
–100
–20 0 20
95 10404
d(m=30%)
40 60 80
Vi ( dBm V )
100 120
Figure 9. AM section: Demodulator output level
0
VS=6V
Vi3=10mV
fAF=1MHz
–20 fAF=10kHz
Tamb=25°C
–40 Treble Voltage V8
–60
Treble Voltage = 0
–80
0
95 10406
0.5
1 1.5
V4 ( V )
2 2.5
Figure 10. Volume control range characteristics
U2510B
6
AM
5
FM
4
ILED
3
2
1 VS=6V
Tamb=25°C
0
0 20 40 60 80 100 120
95 10407
Vi ( dBm V )
Figure 11. AM/FM level indicator current
2.0
1.2
0.8
VS=6V
0.4 fi1=1.6MHz
Tamb=25°C
0
20
95 10408
0
20 40 60 80 100 120
Vi ( dBm V )
Figure 12. AM section: AGC voltage (at Pin 22)
TEMIC Semiconductor
Rev. A1, 06-Apr-98
7 (15)
7페이지 | |||
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부품번호 | 상세설명 및 기능 | 제조사 |
U2510B | All-Band AM/FM Receiver and Audio Amplifier | ATMEL Corporation |
U2510B | All-Band AM/FM Receiver and Audio Amplifier | TEMIC Semiconductors |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |