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부품번호 | BH7802K 기능 |
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기능 | Single chip Hi-Fi audio signal processor | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
Video ICs
Single chip Hi-Fi audio signal
processor
BH7802K
The BH7802K incorporates the functions for a VHS audio signal processing system on a single chip. The circuits on
the chip are a peak-noise reduction processor (PNR), an FM modulator / demodulator circuit, an I / O switcher, an
automatic FM detector circuit, an FM bandpass filter, and a regulator circuit.
•Applications
VCRS
•Features
1) Operates off dual ± power supply which allows a
large reduction in the number of coupling capacitors
required. A built-in regulator makes it easy to con-
struct a power supply system.
2) A two-line I2C bus control decoder circuit is provid-
ed, allowing the various IC modes to be set using
serial control.
3) A four line input switcher is included (tuner, BS, and
line 1 / 2). The output switcher can switch between
STEREO, LEFT, and RIGHT, and Hi-Fi, MIX, and
NORMAL, and a BS MONITOR function is also pro-
vided. The MIX AMP is AV-LINK compatible.
4) The PNR processor and FM modulator / demodula-
tor circuit have reversed characteristics at recording
and playback. In addition, the adjustment for carrrier
frequency and FM deviation / playback level are
common.
5) The built-in bandpass filter excels at attenuation of
other channels, and can be directly coupled to the
playback amplifier. The FM recording output block
has a high-performance low-pass filter to produce
sine wave output.
6) Slope-control-type FM-switching-noise compensa-
tion circuit.
7) Envelope detector circuit and noise-detector-type
automatic FM detector circuit.
8) VCO that uses the color signal sub-carrier frequency
fsc (NTSC: 3.579545MHz, PAL: 4.433619MHz) and
auto-adjusting BPF circuit ensure stable adjustment
with no fluctuation due to mounting stress or time.
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
VCC 18, 36pin······························ 6.0 V
Applied voltage
VEE 39pin································· – 6.0 V
VIN 5, 6, 32pin···························· 6.5 V
Power dissipation
VIN Pins other than the above···· 6.0 V
Pd
850∗
mW
Operating temperature
Topr
– 10 ~ + 70
°C
Storage temperature
Tstg
– 55 ~ + 125
°C
∗ Reduced by 8.5mW for each increase in Ta of 1°C over 25°C, when mounted on a 70mm × 70mm, t = 1.6mm glass epoxy board.
1
Video ICs
•Input / output circuits
TUNER L / R / M IN (2, 1, 3pin)
– 2.0V
1
(2, 3pin)
150k
3k
2.0V
LINE L / R OUT (30, 29pin)
50
VCC
VEE
GND
VCC
25k 330
11.56k
50
FM REC OUT (21pin)
200
30
(29pin)
VEE
GND
VCC
200
3p 8k
21
VEE
GND
4
BH7802K
LINE1, LINE2, BS L / R IN (34, 33, 41, 40, 44, 43pin)
– 2.0V
VCC
33
(34, 40, 41,
43, 44pin)
58k
2.0V
30k
MIX OUT (28pin)
200
28
200 5k
VEE
GND
VCC
47k
FM PB IN (13pin)
3.5V
50k 20p 2k
12.5k
PB
100k
VEE
GND
VCC
13
VEE
GND
4페이지 Video ICs
BH7802K
Parameter
Symbol Min. Typ. Max. Unit
Conditions
〈REGULATOR〉
Quiescent current (positive supply) EE IqPEE
Quiescent current (positive supply) PB
IqPPB
Quiescent current (negative supply) EE IqMEE
Quiescent current (negative supply) PB IqMPB
30.0 40.0 53.0
40.0 54.0 72.0
– 20.0 – 15.0 – 11.0
– 22.0 – 16.0 – 12.0
mA
EE MODE, after carrier frequency
adjustment with no input
mA
PB MODE, carrier frequency adjustment
FNORM, after BPF adjustment
mA
EE MODE, after carrier frequency
adjustment with no input
mA
PB MODE, carrier frequency adjustment
FNORM, after BPF adjustment
Regulator pin voltage (positive)
VCC 4.75 5.10 5.45 V
—
Regulator pin voltage (negative)
VEE – 5.35 – 5.00 – 4.65
V
—
〈EE THROUGH〉 (INPUT: TU IN L / R, LINE1 IN L / R, LINE2 IN L / R, BS IN L / R OUTPUT: LINE OUT L / R)
Line output level
VOEE
– 11.7 – 10.2 – 8.7
dBV INPUT condition 1
Channel balance (L / R)
Distortion
Maximum output level
CBEE
THDEE
VOMEE
– 0.8
—
8.3
0.0
0.017
10.7
0.8
0.10
—
dB INPUT condition 1
% INPUT condition 1, ∗1
dBV THD = 1%, ∗1
ALC level
ALC distortion
Output residual noise
VALC
THDALC
VONEE
+ 2.8
—
—
+ 4.8
+ 6.8
0.03
– 94.0
0.25
– 87.0
dBV INPUT condition 2
ALC ON
%
INPUT condition 2, ∗1
ALC ON
dBV Relevant input shorted to GND, ∗2
Crosstalk
CTEE
— – 88.0 – 70.0
dBV
Relevant input: shorted to GND
Non-relevant input: Input condition 2, ∗2
Muting level
MTEE
— – 103 – 90
dBV INPUT condition 2, ∗2
(INPUT: TU L / R, LINE1 L/R, LINE2 L / R, BS L / R, TU M IN OUTPUT: NORMAL OUT)
Normal out output level
VONORM – 21.5 – 20.0 – 18.5
dBV
INPUT condition 1
L&R input together, ∗1
〈BS / L2 THROUGH〉 (INPUT: BS / L2 IN L / R OUTPUT: LINE OUT L / R)
Output level
VOBS
VOL2
– 11.7 – 10.2 – 8.7
dBV VIN = – 10.2dBV
Distortion
THDBS
THDL2
—
0.005
0.09
% VIN = – 10.2dBV, ∗1
Output residual noise
VONBS
VONL2
— – 99.0 – 87.0
dBV BS IN pin shorted to GND, ∗2
〈LINE AMP〉 (INPUT: NORMAL IN OUTPUT: LINE OUT L / R)
Line amplifier gain1
VOLINE1
+ 8.8
+ 9.8 + 10.8
dB VIN = – 20dBV
〈MIX AMP〉 (INPUT: TU IN L / R, LINE1 IN L / R, LINE2 IN L / R, BS IN L / R OUTPUT: MIX OUT)
Output level
VOMIX
– 10.7 – 8.7
– 6.7
dBV
INPUT condition 1
L&R input together
Distortion
THDMIX
—
0.08
0.50
%
INPUT condition 1
L&R input together, ∗1
MIX ALC level
∗ ∗1: B.W. = 0.4 to 30kHz 2: DIN AUDIO
VALCMIX
– 4.2
– 2.2
– 0.2
dBV
INPUT condition 2
L&R input together
7
7페이지 | |||
구 성 | 총 14 페이지수 | ||
다운로드 | [ BH7802K.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
BH7802K | Single chip Hi-Fi audio signal processor | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |