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BD37068FV-M Datasheet(PDF) 1 Page - Rohm |
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BD37068FV-M Datasheet(HTML) 1 Page - Rohm |
1 / 39 page ○ Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays. 1/35 TSZ02201-0C2C0E100130-1-2 © 2014 ROHM Co., Ltd. All rights reserved. 14.NOV.2016 Rev.002 www.rohm.com TSZ22111・14・001 Analog Sound Processors series Sound Processor for car audio built-in High-Voltage function and 2nd order post filter BD37068FV-M General Description It is built-in input selector of 6 stereo source and output to ADC after adjusting signal level. And built-in 2 nd order post filter to reduce out of band noise and 6ch Volume circuit. It is possible to out until 5.2VRMS at maximum output. (High Voltage function) Moreover, it is simple to design set by built-in TDMA noise reduction systems. Features AEC-Q100 (Grade3) Qualified Built-in differential input selector that can select single-ended / differential input Reduce the pop noise when switching gain due to built-in advanced switch circuit Less out-of-band noise of DAC by built-in 2 nd order post filter. Built-in buffered ground isolation amplifier to realize high CMRR characteristics Built-in TDMA noise reduction circuit reduces the additional components for external filter. It is possible to output 5.2VRMS by High-Voltage function Package is SSOP-B40. Putting same direction input-terminals and output-terminals make PCB layout easier and PCB area smaller. Available to control by 3.3V/5V for I 2C-bus controller Applications It is the optimal for the car audio. Besides, it is possible to use for the audio equipment of mini Compo, micro Compo. Key Specifications (Note1) Total Harmonic Distortion: 0.003%(Typ) Maximum Input Voltage: 2.2VRMS(Typ) Common Mode Rejection Ratio: 55dB(Min) Maximum Output Voltage: 5.2VRMS(Typ) Output Noise Voltage: 23μVRMS(Typ) Residual Output Noise Voltage: 10.5μVRMS(Typ) Ripple Rejection: -70dB (Typ) Operating Temperature Range: -40˚C to +85˚C (Note1) These specifications are condition of High-Voltage ON. Package W(Typ) x D(Typ) x H(Max) SSOP-B40 13.60mm x 7.80mm x 2.00mm SSOP-B40 Typical Application Circuit Figure 1. Typical Application Circuit VCCL SCL SDA 10µF 10µF 2.2µF 10µF 10µF 10µF 10µF 10µF VREF 10µF GND MIN BN FP2 FN2 FN1 FP1 EP2 EN EP1 DP2 DN DP1 CP2 CN CP1 BP2 BP1 A2 A1 OUTC OUTS OUTR1 OUTR2 OUTF1 OUTF2 INF2 INF1 INR2 INR1 INS INC IG1 IG2 HIVOLB VCCH 10µF 10µF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 18 19 40 39 38 37 36 35 16 17 31 32 34 33 30 29 26 25 28 27 21 22 23 24 20 GND ISO amp GND ISO amp GND ISO amp GND ISO amp GND ISO amp GND ISO amp Input selector (1 single - end and 5 stereo ISO) Sub Selector Front Selector Rear Selector I 2C-bus LOGIC Main Gain adjust Sub Gain adjust 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ Differential amp 2nd order LPF Fader ATT★ Fader ATT★ Fader ATT★ Fader ATT★ Fader ATT★ Fader ATT★ Fader Boost★ Fader Boost★ Fader Boost★ Fader Boost★ Fader Boost★ Fader Boost★ ★ Input Gain VREF ■ Fader : +23dB to -79dB、-∞/1dBstep ■ Input Gain : +23dB to -15dB/1dBstep ■ Front Mixing : on/off ■ 2nd order LPF: fc=70kHz ■ Main/Sub Gain Adjust 0dB/6dB ■ Anti-TDMA noise circuit ■ High-Voltage Output ★ Advanced Switch ★ ★ Front mixing Level Shift Level Shift Level Shift Level Shift Level Shift Level Shift 100kΩ 100kΩ GND ISO amp 250kΩ 250kΩ GND ISO amp 10µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 10µF 2.2µF 2.2µF 10µF 2.2µF 2.2µF 10µF 2.2µF 2.2µF 10µF 10µF 2.2µF 2.2µF 10µF Differential amp Datasheet |
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