LA1787M Datasheet, PDF (2/54 Pages) Sanyo Semicon Device – Single-Chip Tuner IC for Car Radios

LA1787M
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V_CC1 max
V_CC2 max
Pd max
Topr
Tstg
Conditions
Pins 6, 40, and 61
Pins 7, 45, 54, 59, and 60
Ta ≤ 55°C
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Operating supply voltage range
Symbol
V_CC
V_CCST IND
V_CC op
Conditions
Pins 6, 7, 40, 45, 54, 59, 60, and 61
Pin 26
Ratings
Unit
9
V
12
V
950 mW
–40 to +85
°C
–40 to +150
°C
Ratings
Unit
8
V
5
V
7.5 to 9.0
V
Operating Characteristics at Ta = 25°C, V_CC= 8.0V, in the specified test cricuit for the FM IF input
Parameter
Symbol
Conditions
[FM Characteristics] At the FM IF input
Current drain
Demodulation output
Pin 31 demodulation output
Channel balance
I_CCO-FM
V_O-FM
V_O-FM31
CB
No input, I40 + I45 + I54 + I59 + I60 + I61
10.7 MHz, 100dBµ, 1 kHz, 100%mod, The pin 15 output
10.7 MHz, 100dBµ, 1 kHz, 100%mod, The pin 31 output
The ratio between pins 15 and 16 at 10.7 MHz, 100 dBµ, 1 kHz
Total harmonic distortion
THD-FM mono 10.7 MHz, 100 dBµ, 1 kHz, 100% mod, pin 15
Signal-to-noise ratio: IF
S/N-FM IF 10.7 MHz, 100 dBµ, 1 kHz, 100% mod, pin 15
AM suppression ratio: IF
AMR IF
Att-1
10.7 MHz, 100 dBµ, 1 kHz, f_m = 1 kHz, 30% AM, pin 15
10.7 MHz, 100 dBµ, 1 kHz. The pin 15
attenuation when V33 goes from 0 to 2 V
Muting attenuation
Att-2
10.7 MHz, 100 dBµ, 1 kHz. The pin 15
attenuation when V33 goes from 0 to 2 V^*1
Att-3
10.7 MHz, 100 dBµ, 1 kHz. The pin 15
attenuation when V33 goes from 0 to 2 V^*2
Separation
Separation
10.7 MHz, 100 dBµ, L+R = 90%, pilot = 10%. The pin 15 output
ratio
Stereo on level
ST-ON
The pilot modulation such that V26 < 0.5 V
Stereo off level
ST-OFF
The pilot modulation such that V26 > 3.5 V
Main total harmonic distortion THD-Main L 10.7 MHz, 100 dBµ, L+R = 90%, pilot = 10%. The pin 15 signal
Pilot cancellation
PCAN
10.7 MHz, 100 dBµ, pilot = 10%.
The pin 15 signal/the pilot level leakage. DIN audio
SNC output attenuation
AttSNC
10.7 MHz, 100 dBµ, L-R = 90%, pilot = 10%.
V28 = 3 V → 0.6 V, pin 15
HCC output attenuation
AttHCC-1
AttHCC-2
10.7 MHz, 100 dBµ, 10 kHz, L+R = 90%, pilot = 10%.
V29 = 3 V → 0.6 V, pin 15
10.7 MHz, 100 dBµ, 10 kHz, L+R = 90%,
pilot = 10%. V29 = 3 V → 0.1 V, pin 15
Input limiting voltage
Vi-lim
100 dBµ, 10.7 MHz, 30% modulation. The IF input such
that the input reference output goes down by 3 dB
Muting sensitivity
Vi-mute
The IF input level (unmodulated) when V33 = 2 V
SD sensitivity
SD-sen1 FM ^{The IF input level (unmodulated) (over 100 mV rms)}
such that the IF counter buffer output goes on
SD-sen2 FM
IF counter buffer output
Signal meter output
Muting bandwidth
V_IFBUFF-FM
V_SM FM-1
V_SM FM-2
V_SM FM-3
V_SM FM-4
BW-mute
10.7 MHz, 100 dBµ, unmodulated. The pin 23 output
No input. The pin 24 DC output, unmodulated
50 dBµ. The pin 24 DC output, unmodulated
70 dBµ. The pin 24 DC output, unmodulated
100 dBµ. The pin 24 DC output, unmodulated
100 dBµ. The bandwidth when V33 = 2 V, unmodulated
Mute drive output
V_MUTE-100 100 dBµ, 0 dBµ. The pin 33 DC output, unmodulated
Ratings
unit
min
typ
max
60
94
110
mA
205
310
415 mVrms
190
295
380 mVrms
–1
0
+1
dB
0.3
1
%
75
82
dB
55
68
dB
5
10
15
dB
15
20
25
dB
28
33
38
dB
30
40
dB
1.2
2.4
4.4
%
0.6
1.6
%
0.3
1.2
%
20
30
dB
1
5
9
dB
0.5
4.5
8.5
dB
6
10
14
dB
33
40
47
dBµ
27
35
43
dBµ
54
62
70
dBµ
54
62
70
dBµ
130
200
270 mVrms
0.0
0.1
0.3
V
0.4
1.0
1.5
V
2.0
2.7
3.5
V
4.7
5.5
6.2
V
150
220
290 kHz
0.00 0.03 0.20
V
Continued on next page.
No. 6655-2/54