Datasheet D/A Converter Series for Electronic Adjustment 10bit 4ch/6ch D/A Converters BU2507FV BU2508FV General Description Key Specifications The BU2507FV and BU2508FV ICs are 10bit R-2R type Operating Supply Voltage Range 4.5V to 5.5V D/A converters with 6ch and 4ch outputs, respectively. Number of Channels Each channel incorporates a full swing output-type buffer BU2507FV 6ch amplifier with high speed output response characteristics, BU2508FV 4ch resulting in a greatly shortened D/A output settling time. Differential Non Linearity Error 1.0LSB(Max) The ICs also have digital input pins compatible with TTL Integral Non Linearity Error 3.5LSB(Max) levels, and the maximum value of the data transfer Data Transfer Frequency 10MHz(Max) frequency is 10MHz. With the variable output range function, the upper and lower limits of the output voltage can be set separately from the power supply voltage. Packages W(Typ) x D(Typ) x H(Max) SSOP-B14 5.00mm x 6.40mm x 1.35mm Features Built-in Multi-channel R-2R Type 10bit D/A Converter (BU2508FV: 4 Channels, BU2507FV: 6 Channels) Built-in Full Swing Output Buffer Amplifier for All Channels RESET Terminal to fix the Output Voltage to the Lower Reference Level for All Channels Digital Inputs Compatible with TTL Levels 3-wire Serial Interface and RESET Signal to send a 14bit Format Word (4bit Address and 10bit Data) Applications SSOP-B14 Control of the Various Types of Consumer and Industrial Equipment Typical Application Circuit VCC VCC VDD VrefH AOAO11 CH1CH1 (VrefH) AO2 CH2 VSS AO2 CH2 VrefL (VrefL) AO3 CH3 AO3 CH3 RESET Reset LDLD AO6 CH6 CoConntrotrolllleerr CH6 AO6 CLKCLK DI DI GND GND Product structure Silicon monolithic integrated circuit This product has no designed protection against radioactive rays. www.rohm.com TSZ02201-0RLR0GZ10150-1-2 2015 ROHM Co., Ltd. All rights reserved. p 1/17 TSZ2211114001 06.Nov.2020 Rev.002 BU2507FV BU2508FV Pin Configurations SSOP-B14 (TOP VIEW) 14 13 12 11 10 9 8 1 2 3 4 5 6 7 Pin Descriptions Terminal Analog / Description of terminal Equivalent No. I/O name Digital BU2507FV BU2508FV circuit No. 1 VSS Analog - D/A converter lower side reference voltage (V ) input terminal 5 refL 2 AO2 Analog O 10bit D/A output (CH2) 3 (Note 1) 3 AO3(TEST1) Analog O 10bit D/A output (CH3) test terminal 3 Fixes the output voltage to the lower reference level for all 4 RESET Digital I 2 channels. (Note 1) 5 AO4(TEST2) Digital I 10bit D/A output (CH4) test terminal 3 6 AO5 (AO3) Analog O 10bit D/A output (CH5) 10bit D/A output (CH3) 3 7 VDD Analog - D/A converter upper reference voltage (V ) input terminal 4 refH 8 VCC - - Power supply - 9 AO6 (AO4) Analog O 10bit D/A output (CH6) 10bit D/A output (CH4) 3 When the LD terminal is set to the high level voltage, 14bit data 10 LD Digital I in the shift register is loaded on to the address decoder and a 1 specified D/A output register. Shift clock input terminal. At the rising edge of the CLK input, an 11 CLK Digital I 1 input value on the DI terminal is input to the 14bit shift register. Serial data input terminal. Serial data length is 14bit (4bit address 12 DI Digital I 1 and 10bit data). 13 AO1 Analog O 10bit D/A output (CH1) 3 14 GND - - GND terminal - (Note 1) The TEST1 and TEST2 terminals of the BU2508FV should be left open. These terminals are used for testing. www.rohm.com TSZ02201-0RLR0GZ10150-1-2 2015 ROHM Co., Ltd. All rights reserved. 2/17 TSZ2211115001 06.Nov.2020 Rev.002