■ DESCRIPTION
The MB40D001 is an 8-bit D/A converter with 12 built-in channels. The 12 sets of analog outputs have built-in OP amps to enable use with large current drive applications.
CS (chip select) data input/output format is used to enable connection to a serial bus. A built-in 12-bit I/O expander provides serial <=> parallel conversion (8 of the 12 bits are also used with analog output).
The MB40D001 can be adapted for microcontroller port expansion, or replacement of electronic volume control or semi-fixed calibration resistance.
Also, the MB40D001 is function- and pin-compatible with the MB88146A, for easy replacement when reducing sysytem operating voltage.

■ FEATURES
• Supply voltage 2.7 V to 3.6 V (Power consumption 0.7 mW/ch typ.)
• Compact package: SSOP-24
• R-2R type 8-bit D/A converter with 12 built-in channels
• Built-in 12-bit I/O expander (8 of 12 bits also used with analog output)
• Built-in analog amplifier (sink current max. 0.4 mA, source current max. 1.0 mA)
• Built-in power-on detector circuit (detects VccD power-on, and performs initialization)
• Separate MCU interface power supply (VccD), OP amp supply (VccA), D/A converter supply VDD
• Analog output range 0 V to VccA.
• Serial data input/output operation to maximum of 2.5 MHz (1.5 MHz in cascade operation)
• CMOS process