U2510B
Terminal Voltages
Test circuit: V = 0
in
Voltage/V
FM TAPE AM
Pin
Symbol
V = 3 V
S
V = 6 V
S
AM
–
FM TAPE
1
Mute voltage (R = 0)
V
1
V
2
V
3
V
4
V
5
V
6
V
7
V
8
V
9
1.6
1.0
1.2
2.4
–
–
–
–
–
1.6
1.0
2.6
2.4
–
–
–
3
2
FM discriminator
–
3
Negative feedback
1.2
2.4
2.4
–
1.2
2.4
–
2.6
2.4
2.4
–
2.6
2.4
–
4
Volume control input (S = A)
4
5
AM oscillator
FM AFC
6
1.9
2.4
2.4
2.4
–
–
1.9
2.4
2.4
2.4
2.4
0
–
7
FM oscillator
–
–
–
–
8
V
Ref
2.4
–
2.4
2.4
–
2.4
–
2.4
–
9
FM RF tank
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
AM input
V
10
V
11
V
12
V
13
V
14
V
15
V
16
V
17
V
18
V
19
V
20
V
21
V
22
V
23
V
24
V
25
V
26
V
27
V
28
2.4
–
–
–
FM AGC
0
–
–
–
FM input
1.4
–
–
–
1.4
–
–
Front end ground
AM/FM IF output
Mode control switch
AM IF input
FM IF input
–
2.9
0
–
–
–
2.7
–
–
5.9
0
5.7
–
–
2.9
–
5.7
–
0
–
0
–
–
0.7
2.4
–
–
0.7
2.4
–
Treble control input (S = A)
2.4
2.4
2.4
2.4
5
LED
IF ground
0
0
0
1.2
–
0
0
0
1.2
–
AFC switch (S = off)
1.2
1.5
1.5
1.5
2.7
3.0
1.2
0
1.2
1.2
1.2
1.5
2.7
3.0
1.2
0
1.2
1.5
1.5
1.5
5.3
6.0
2.6
0
1.2
1.2
1.2
1.5
5.3
6.0
2.6
0
3
AGC (AM)/AFC (FM)
Detector output
AF input
–
–
1.5
2.7
3.0
1.2
0
1.5
5.3
6.0
2.6
0
Ripple filter
Supply voltage
AF output
AF ground
TEMIC Semiconductor
3 (15)
Rev. A1, 06-Apr-98
TEMIC [ TEMIC SEMICONDUCTORS ]
