bh3866as ROHM Co. Ltd., bh3866as Datasheet
bh3866as
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bh3866as Summary of contents
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... Video ICs Dual-line serial control sound processor IC BH3866AS The BH3866AS is a signal processing IC developed for the control of volume and tone quality in TV equipment. 2 Since dual-line serial control (I C BUS) is used, the volume level and tone quality in TV equipment can be changed using signals such as those from a microcomputer or similar device. ...
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... Pin No. Pin name BH3866AS – 10k + – 10k 10k – BUS interface SCL SDA Function DAC Expansion DAC ( Vol Cch shock sound integration ...
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... GND V CC 200 — 430 2k GND BH3866AS Function Input pins Output pins. GND AGC 0dB adjustment pin. This pin is connected to the base of PNP. The current output from this pin (Typ.) Max. Time constant pin on the side that suppresses the AGC signal level ...
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... GND V CC 50k — 50k GND BH3866AS Function Time constant pin on the side that amplifies the AGC signal level. Serves as both the output pin for the surround and pseudo- stereo effects, and the LPF pin. For the phase-shifter filter for the surround and pseudo- stereo effects ...
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... CC GND V CC — 30k DAC GND BH3866AS Function Integration pins that prevent shock sound when switching the bass and treble levels. Treble filter pins for the left, right, and center channels. Bass filter pins for the left, right, and center channels. ...
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... O 100k 74.6k 25. — 50k GND BH3866AS Function SCL pin for the BUS. This is the clock pin. SDA pin for the BUS. The Acknowledge signal is output from this pin. This is the data pin and 5V output pin that ...
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... V CC GND O 10k 10k — — — — BH3866AS Function Surround input section for monaural signals in the surround section. BGAIN Bass signal input to the left and right channels 200 Incremented output from the left and right channels following AGC ...
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... — 100mVrms 100Hz — 100mVrms — 1Vrms — 1Vrms — 1Vrms BH3866AS Conditions 20log ( / 20log ( / 20log ( / 20log ( / ) R ...
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... V = 1mVrms IN 80 110 mVrms V = 50mVrms IN 80 110 mVrms V = 50mVrms IN 130 170 mVrms V = 110mVrms IN 130 170 mVrms V = 110mVrms IN 210 260 mVrms V = 1Vrms IN BH3866AS Conditions 20log MAXR 20log MAXL 20log MAXC 20log 20log 20log ...
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... BAONL V = 100mVrms, IN – 4 – 1 20log MONR V = 100mVrms, IN 1 20log MONL 4.7 5 5.3 V — — — mA 3.5 — — — 0.9 V BH3866AS Conditions 100mVrms 100mVrms ...
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... — — BH3866AS ...
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... — — BH3866AS Slave address LSB ...
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... IHI SCL and SDA pin input low level — ILO Slave address MSB NO. Selected address / data BH3866AS LSB BUS Measurement point ...
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... LOW HIG BUF = bus free time. t SU; DAT = data set-up time. t HD; DAT = data hold time. 2 Fig.2 Timing requirements for I C BUS BH3866AS Unit kHz HD BUF t HD; DA ...
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... MSB LSB Selected Address A Data 8bit 1bit 8bit Selected Address A Data MSB LSB MSB LSB Selected Address A Data 1, Data 2, ..., Data N MSB LSB MSB A Data A Selected Address 2 LSB MSB LSB MSB BH3866AS A P 1bit 1bit LSB A Data A P LSB MSB LSB 15 ...
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... Video ICs (4) BH3866AS slave address MSB The above slave address has been registered with Philips Corporation. (5) Selected addresses MSB Set item 0 Lch volume 1 Rch volume 2 Cch volume 3 Tone (bass) 4 Tone (treble) 5 Surround 6 AGC When sending continuous data, the auto increment function moves through the selected addresses in the following sequence ...
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... ON / OFF switch for ( signal (pseudo-stereo OFF switch for surround effect Muting switch AGC ON / OFF switch Low-pitch range mixing switch Selector switch for CIN input of COUT output signal Switch that selects whether or not COUT is output output switch BH3866AS LSB CON MUTE ...
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... BH3866AS ATT DATA (dB) (HEX) – – – – – – – – – – ...
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... BH3866AS C Bass Treble Gain Gain (dB) (dB) – 1.5 – 0.8 – 2.4 – 1.3 – 3.4 – 2.0 – 4.6 – 2.8 – 5.8 – 3.7 – 7.1 – 4.7 – 8.3 – 5.7 – 9.5 – 6.6 – 10.6 – 7.5 – 11.5 – ...
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... ICs. Note that Rohm has not fully investigated patent rights regarding this product. BH3866AS 0.033 10 10 4.7 21 ...
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... CC HPF configuration RT, LT, and CT pins + – R 30k Fig.5 600 500 400 300 200 100 0 2 AGCADJ VOLTAGE (V) Fig. 7 (Reference data) Relation BH3866AS 30k the LPF will be –3dB – LPF 30k ...
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... Gain (dB (9) External PS (pin 7) of the phase shifter causes the 1 The resistance in the IC is 18k (Typ.). -1 = –2tan ( BH3866AS S OUT 10k + 6 R – 1 0.0056 C 4. Fig. Frequency (Hz Fig.11 18k R 18k ...
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... ADD (pin 29) and inputting those signals to BIN (pin 28) enables configuration of a low-pitch amplifica- tion circuit. This switch serves as the I mand. The gain for the amplifier can be set through the external resistance, using BGAIN (pin 26 Gain = 20log BH3866AS + + – OUT + – ...
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... CB (pin 21) and CT (pin 30 22). This should be given adequate consideration in the fundamental design of the set, when the pattern is laid out. The following illustration shows an example of coun- termeasures. 10 Lch output BH3866AS 2 C BUS . If this capacitance is set REF LOUT CB CT ...
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... Video ICs (22) Relation with the BH3865S The BH3866AS and BH3865S are pin compatible, and share some of the same selected address and data 2 parameters for the I C BUS. Therefore, the same sub- strates and software can be shared at the product plan- ning stage. ...