BU9480F
BU9480F is 16-bit stereo D / A converter for audio applications manufactured by ROHM.
Features
- 1) 3.0 to 5.5V operating voltage. 2) Low current consumption because of the CMOS process. 3) Resistor strings method used.
4) 2-channel mon phase output. 5) Internal 2 × oversampling interpolator. 6) 8
- pin plastic package. 7) Supports 4fs. (200k Hz operation)
- Block diagram
LRCLK 5 BCLK 7 X2 OVER SAMPLING SDATA 6 DAC DAC SHIFT REGISTER / LATCH 8 X2 OVER SAMPLING V CC
3 GND 4 OUTL 2 REF 1 OUTR
- Pin descriptions
Pin No. 1 2 3 4 5 Pin name ROUT REF GND LOUT LRCK Function Right channel analog signal output Connects the DA ref. voltage pin and ground Ground Left channel analog signal output The signal that distinguishes between left and right channels for serial data (left channe = high level, right channel = low level). Serial data input Input with 2' pliment, MSB first. Serial data shift clock input Vcc I/O Low-impedance output High-impedance input
- Low-impedance output Logic input Voltage 1 / 2VCC 1 / 2VCC
- 1 / 2VCC
- 6 7 8
SDAT BCLK VCC
Logic input Logic input
- -
- -
Multimedia ICs
- Absolute maximum ratings (Ta = 25°C)
Parameter Applied voltage Power dissipation Operating temperature Storage temperature Input voltage Symbol VDDMax. Pd Topr Tstg Topt Limits 7.0 450∗
- 10 ~ + 70
- 55 ~ + 125
- 0.3 ~ VDD + 0.3 Unit V m W °C °C V
∗ When unmounted, reduced by 4.5m W for each increase in Ta of 1°C over 25°C.
- Remended operating conditions
Parameter Power supply voltage Input low level voltage Input high level voltage Symbol VDD VIL VIH Limits 3.0 ~ 5.5 0.0 ~ 0.2 × VDD 0.8 × VDD ~ VDD Unit V V V
Electrical characteristics (unless otherwise noted, Ta = 25°C, V
- Analog unit characteristics
Parameter Current dissipation Resolution Noise distortion 1 Noise distortion 2 Full-scale output voltage Crosstalk S / N ratio Output pin load resistance Symbol IDD RES THD1 THD2 VFS C.T S/N RL Min.
- -
- - 1.8
- 86 10 Typ. 3.6
- 0.05 0.07 2
- 92 93
- Max. 6 16 0.12 0.4 2.2
- 85
- - Unit m A BIT % % VP-P d B d B kΩ
= + 5.0V)
Conditions f = 1k Hz, 0d...