BA7795LS Datasheet PDF - ROHM Semiconductor
| Part Number | BA7795LS | |
| Description | VCR standard audio signal processor | |
| Manufacturers | ROHM Semiconductor | |
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There is a preview and BA7795LS download ( pdf file ) link at the bottom of this page. Total 12 Pages | ||
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Video ICs
VCR standard audio signal processor
BA7795LS / BA7795FS
The BA7795LS and BA7795FS are standard audio signal processor ICs. They contain a playback preamplifier, line
amplifier, recoeding amplifier, ALC circuit, EQ switch circuit and high-voltage head switch, and provide all of the functions
required for normal-audio signal processing on a single IC with a minimum number of external components required.
•Applications
Video cassette recorders and tape decks
•Features
1) Available in compact SZIP and SSOP-A24-pin pack-
ages.
2) High-with standing-voltage head switch (AC with
standing voltage: Min. 80VP-P (f = 70kHz) ).
3) Simple, three-mode EQ switch built-in (BA7795LS).
4) Built-in LINE / TUNER selector switch.
5) High-performance low-noise playback amplifier.
Input conversion noise figure – 122dBV
(Typ. Rg = 680, DIN AUDIO).
6) ALC level can be varied.
7) ALC loop external mute eliminates audible noise at
power on, and ALC attack noise.
8) Signal processing circuit can be constructed with the
addition of just a few external components.
•Block diagram
HEAD EQ 1
REC HSW 3
RIPPLE FILTER 5
VCC 7
EQ CTRL 9
PB / TU / EE CTRL 11
ALC LEVEL 13
BIAS 15
MUTE CTRL 17
REC NFB 19
REC OUT 21
REC EQ 23
REC
ALC
+ 20dB
LINE
– 20dB
BA7795LS
2 PB IN
4 GND
6 PB NFB
8 PB EQ
10 PB OUT
12 PB LINE IN
14 ALC FILTER
16 LINE IN
18 TUNER IN
20 GND
22 LINE OUT
24 REC / EE CTRL
∗ The BA7795FS has a different pin
layout to the BA7795LS.
1
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Video ICs
•Measurement circuit
BA7795LS
1
AC BIAS IN
3
5
VCC
7
EQ CTRL
PB / TU / EE
CTRL
R2
9
11
13
15
MUTE CTRL
ON: GVEREC
17
19
REC OUT
4.7k
21 REC
23
ALC
+ 28dB
LINE
– 20dB
BA7795LS / BA7795FS
2 PB IN
ON: GVOPB
4
+
6
8
10
4.7k
4.7k
12
47µ
2.2M
14
ON: ALC OFF
16 LINE IN
4.7k
18 TUNER IN
4.7k
20
4.7k
RL
22 LINE OUT
24 REC / EE CTRL
Fig. 2
Units: R [Ω]
C [F]
∗ The BA7795FS has a different pin layout to the BA7795LS.
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BA7795LS electronic component. |
| Information | Total 12 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ BA7795LS.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| BA7795LS | The function is VCR standard audio signal processor. ROHM Semiconductor | |
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