MB88346B-P Fujitsu Microelectronics, Inc., MB88346B-P Datasheet - Page 4

• Manufacturer Part Number: MB88346B-P
• Description: R-2r Type 8-bit D/A Converter With op Amp Output Buffers
• Manufacturer: Fujitsu Microelectronics, Inc.

4
MB88346B
PIN ASSIGNMENT and Tableshow the pin assignment and pin description of the MB88346B.
Power Supply
V
GND
V
V
Control Input
CLK
LD
Data Input/Output
D
D
DAC Output
AO1
AO2
AO3
AO4
AO5
AO6
AO7
AO8
AO9
AO10
AO11
AO12
Symbol
CC
DD
SS
I
O
PIN DESCRIPTION
Pin No.
11
20
10
16
15
17
14
18
19
12
13
1
2
3
4
5
6
7
8
9
Type
O
O
-
-
-
-
I
I
I
+5V DC power supply pin for the digital block (MCU interface) and operational
amplifier output buffers.
Ground pin for the digital block (MCU interface) and operational amplifier out-
put buffers.
DC power supply pin for the analog block (D/A converter) except operational
amplifier output buffers.
Ground pin for the analog block (D/A converter) except operational amplifier
output buffers.
Shift clock input to the internal 12-bit shift register: At the rising edge of CLK
data on the DI pin is shifted into the LSB of the shift register and contents of
the shift register are shifted right (to the MSB).
Load strobe input for a 12-bit address/data : A high level on the LD pin latches
a 4-bit address (upper 4 bits: D11 to D8) of the internal 12-bit shift register into
the internal address decoder, and writes 8-bit data (lower 8 bits: D7 to D0) of
the shift register into an internal data latch selected by the latched address.
Serial address/data input to the internal 12-bit shift register: The address/
data format is that upper 4 bits (D11 to D8) indicate an address and lower 8
bits (D7 to D0) indicate data. The D11 (MSB) is the first-in bit and D0 (LSB) is
the last-in bit.
Serial address/data output from the internal 12-bit shift register: This is an
output pin of the MSB bit data of the 12-bit shift register. This pin allows a
cascade connection of the device.
8-bit resolution D/A converter outputs : 12 channels of DAC outputs (AO1 to
AO12) are provided.
Each output channel has an operational amplifier output buffer for analog out-
put data.
Table 1 Pin Description
Name & Function