LV25450PNW Datasheet, PDF (29/40 Pages) Sanyo Semicon Device – For Automotive Applications DSP Tuner Front End

LV25450PNW
FM-Keyed-AGC operation
0 Keyed AGC normal operation
1 Keyed Wide AGC control function off
FM-RFAGC operation
0 Normal operation
1 FET OFF
IN3-2 tuner setting 2
Address 69h, Subaddress [1]
A A A A B B B B ^IN
32103210
1
Sub Address Code
01101001
Address Code
L L L L L L L L L L L L L LLL L L L L L L L L L L L L L L L L
(36) (35) (34)
(33)
(32)
(31)
(30)
(29)
(28)
IF AGC clamp variations
correction
0 0 0 -2dB
001
↓
010
↓
0 1 1 Center
100
↓
101
↓
110
↓
1 1 1 +2dB
AM-RF-AGC
amplifier threshold
(steep)
0000
0001
0010
0011
0100
1011
1100
1101
1110
1111
1.0V
↓
↓
↓
↓
↓
↓
↓
↓
↓
↓
2.5V
FM-Keyed
AGC
threshold
0.14V
↓
↓
↓
↓
↓
↓
↓
↓
↓
↓
2.2V
FM/AM-Wide-AGC Sensitivity
0 0 0 0 0.14V
0001 ↓
0010 ↓
0011 ↓
0100 ↓
↓
↓
1011 ↓
1100 ↓
1101 ↓
1110 ↓
1 1 1 1 2.57
S-Meter Shift(TSOUT)
0 0 0 0 0 180μA(2.65V)
00001
↓
00010
↓
00011
↓
00100
↓
00101
↓
00110
↓
00111
↓
↓
↓
11010
↓
11011
↓
11100
↓
11101
↓
11110
↓
1 1 1 1 1 245μA(3.3V)
[AM] RF-AGC
Amp threshold
(gradual)
0000
0001
0010
0011
0100
1011
1100
1101
1110
1111
1.0 +VBE
↓
↓
↓
↓
↓
↓
↓
↓
↓
↓
2.5 +VBE
[FM] All Pass Filter
Steps on the software
0000
0
1000
1
0100
2
1100
3
0010
4
1101
11
0011
12
1011
13
0111
14
1111
15
Phase shift
trimming
Small
↓
↓
↓
↓
↓
↓
↓
↓
↓
↓
Large
FM/AM-Narrow-AGC Sensitivity
0 0 0 0 0.14V
0001 ↓
0010 ↓
0011 ↓
0100 ↓
↓
↓
1011 ↓
1100 ↓
1101 ↓
1110 ↓
1 1 1 1 2.5V
No.A1668-29/40