BH7801AK, BH7801AK-E2, BH7801BK Selling Leads, Datasheet
MFG:ROHM Package Cooled:QFP D/C:97
BH7801AK, BH7801AK-E2, BH7801BK Datasheet download
Part Number: BH7801AK
MFG: ROHM
Package Cooled: QFP
D/C: 97
BH7801AK, BH7801AK-E2, BH7801BK
- Table of contents:
Info of BH7801AK
Info of BH7801AK-E2
Info of BH7801BK
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About BH7236
PDF/DataSheet Download
Datasheet: BH7236
File Size: 73695 KB
Manufacturer: ROHM [Rohm]
Download : Click here to Download
About BH7236
PDF/DataSheet Download
Datasheet: BH7236
File Size: 73695 KB
Manufacturer: ROHM [Rohm]
Download : Click here to Download
About BH7801BK
PDF/DataSheet Download
Datasheet: BH7801BK
File Size: 188391 KB
Manufacturer: ROHM [Rohm]
Download : Click here to Download
BH7801BK General Description
The BH7801BK 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.
BH7801BK 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 construct a power supply system.
2) A two-line I2C BUS control decoder circuit is provided, 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 STREO, LEFT, and RIGHT, and Hi-Fi, MIX, and NORMAL, and a BS MONITOR function is also provided.
4) The PNR processor and FM modulator / demodulator circuit have reversed characteristics at recording and playback. In addition, the adjustment for carrier 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 compensation 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.
2) A two-line I2C BUS control decoder circuit is provided, 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 STREO, LEFT, and RIGHT, and Hi-Fi, MIX, and NORMAL, and a BS MONITOR function is also provided.
4) The PNR processor and FM modulator / demodulator circuit have reversed characteristics at recording and playback. In addition, the adjustment for carrier 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 compensation 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.
BH7801BK Typical Application
VCRs
BH7801BK Connection Diagram
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