Document
ICs for TV
AN5829S
Sound multiplex decoder IC for the U.S. televisions
s Overview
0.4±0.25 0.45
Unit: mm
1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
The AN5829S is a multiplex sound demodulation IC dedicated to the U.S. television and incorporates a bidirectional I2C interface (adjustment, mode SW), an AGC circuit and external stereo input switches (2 systems).
• Stereo demodulation, SAP demodulation, dbx noise reduction, AGC, external stereo input SW and I2C bus interface are integrated in a single chip • Bi-directional I2C bus makes it possible to monitor MPX input level, separation adjustment (3 places), mode changeover and receiving status. • Eliminated external parts (multi-sound block: 21 pieces → 14 pieces • Lower power dissipation (VCC = 5 V, ITOT = 18 mA)
0.1±0.1
1.27
s Features
0.3
7.2±0.3 9.4±0.3
SOP024-P-0375A
s Applications
• Televisions and VCRs for the North American market
0.15 0.925
2.0±0.2
15.3±0.3
1
2
R out L out 4 1
AN5829S
GND
s Block Diagram
VCC
7
17
16
15
Out SW I2C Decoder Offset cancel Matrix AGC DAC
21
22
ZAP 18 19
20
PE SCL SDA
L+R demod
L+R filter
Pilot det.
75 µs De-emph.
24 23 2 3 L−R demod Wide band expand L−R filter Offset cancel 5 Wide band RMS det. Wide band filter 8 6 SAP det. Noise det. Spectral expand Spectral RMS det. Spectral filter 11 10 (L−R)/SAP switch dbx De-emph. fH, 2fH Trap filter
13 12
AUX2 L AUX2 R AUX1 L AUX1 R
St. PLL
Pilot cancel
Stereo filter
MPX in SAP demod SAP out filter
14
Input VCA
SAP filter
Noise filter
9
ICs for TV
ICs for TV
s Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 AGC timing External input 1 L-ch External input 1 R-ch 75 µs filter offset cancel dbx offset cancel Wideband timing VCC Wideband level sensor input Spectral filter Spectral timing Spectral level sensor input SAP noise level detection Description Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Description SAP carrier detection Composite input Pilot signal detection Stereo PLL filter GND SCL SDA PE for ZAP L-ch output R-ch output External input 2 R-ch. External input 2 L-ch.
AN5829S
s Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation
*2 *1
Symbol VCC ICC PD Topr Tstg
Rating 6.0 25 150 −20 to +75 −55 to +125
Unit V mA mW °C °C
Operating ambient temperature Storage temperature
*1
Note) The use of this IC, which builds in dbx-TV noise reduction, requires a license agreement with THAT Corporation. *1: Except fot the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: Ta = 75°C
s Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 4.5 to 5.5 Unit V
3
AN5829S
s Electrical Characteristics at VCC = 5 V, NR: On,Ta = 25°C
Input level (at 100% modulation) L+R: 75 mV[rms] (pre-emphasis off) L−R: 150 mV[rms] (dbx noise reduction off) Pilot: 15 mV[rms] SAP: 45 mV[rms] (dbx noise reduction off) Parameter Total circuit current Mono output level Symbol ICC V0(MON) No signal.