FUJITSU MICROELECTRONICS
DATA SHEET
DS04-13513-1Ea
Linear IC Converter
CMOS
D/A Converter for Digital Tuning
(12-channel, 8-bit, on-chip OP amp., low-voltage)
MB88146A
■ DESCRIPTION
The MB88146A is an 8-bit D/A converter with twelve built-in channels. The 12 analog outputs each have a builtin OP amplifier with large current drive-capability.
The data input/output format is CS (chip select) with serial bus connection available.
A built-in 12-bit I/O expander enables serial ↔ parallel conversion (8 of the 12 bits can also be used for analog
output).
This product can be used for microcontroller port expansion, electronic level adjustment, replacement of semifixed resistance for tuning, etc.
■ FEATURES
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Ultra low power consumption (1.2 mW/chl: typical)
Ultra compact package
Built-in 12-channel R-2R type 8-bit D/A converter
Built-in 12-bit I/O expander (8 bits also function as analog output)
Built-in analog output amplifier (sink current 1.0 mA maximum, source current 1.0 mA maximum)
Built-in power-on detection circuit (initialized at detection of VccD power-on)
MCU interface compatible with 3 V to 5 V systems
Power divided into MCU interface power supply (VccD) and OP amplifier power supply (VccA), D/A converter
power supply (VccD)
Analog output capability from 0 V to VccA
Serial data I/O operates to maximum of 2.5 MHz (in cascade connection, up to 2.5 MHz when VccD = 5 V, up
to 1.5 MHz when VccD = 3 V)
CMOS process
Choice of two packages: SDIP-24 pin and SSOP-24 pin.
Copyright©1998-2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved
1998.11
