product has no designed protection against radioactive rays.
1/18
TSZ02201-0RLR0GZ10140-1-2
11.Dec.2015 Rev.001
BU2505FV
BU2506FV
Pin Configurations
SSOP-B20
(TOP VIEW)
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
Pin Descriptions
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Terminal
Name
VSS
AO3
AO4
AO5
REVERSE
RESET
AO6
AO7
AO8
VDD
VCC
AO9(TEST1)
AO10(TEST2)
DO
LD
CLK
DI
AO1
AO2
GND
Analog /
Digital
Analog
Analog
Analog
Analog
Digital
Digital
Analog
Analog
Analog
Analog
-
Analog
Analog
Digital
Digital
Digital
Digital
Analog
Analog
-
I/O
-
O
O
O
I
I
O
O
O
-
-
O
O
O
I
I
I
O
O
-
Description
BU2505FV
BU2506FV
D/A converter lower reference voltage (V
refL
) input terminal
10bit D/A output(CH3)
10bit D/A output(CH4)
10bit D/A output(CH5)
Reverses the 10bit designated as data in the 14bit to select MSB
(Note 1)
first or LSB first.
Fixes the output voltage to the lower reference level for all
channels.
10bit D/A output(CH6)
10bit D/A output(CH7)
10bit D/A output(CH8)
D/A converter upper reference voltage (V
refH
) input terminal
Power supply
10bit D/A output(CH9)
10bit D/A output(CH10)
test terminal
test terminal
(Note 2)
(Note 2)
Equivalent
circuit No.
6
4
4
4
2
2
4
4
4
5
-
4
4
3
1
1
1
4
4
-
Outputs the LSB data of 14bit shift resister.
When the LD terminal is set to the high level voltage, 14bit data in
the shift register is loaded on to the address decoder and a
specified D/A output register.
Shift clock input terminal. At the rising edge of the CLK input, an
input value on the DI terminal is input to the 14bit shift register.
Serial data input terminal. Serial data length is 14bit (4bit address
and 10bit data).
10bit D/A output(CH1)
10bit D/A output(CH2)
GND terminal
(Note 1) It is selectable for the IC to receive 10bit data in LSB first order or MSB first order, depending on the condition of the REVERSE terminal. If the REVERSE
terminal is set to the GND voltage, it is MSB first
(Note 2) The TEST1 and TEST2 terminals of the BU2506FV should be left open. These terminals are used for testing.
(Note 3) Derate by 7.5mW/°C when operating above T
A
=25°C (when mounted on ROHM’s standard board).
Mounted on a FR4 glass epoxy PCB 70mm x 70mm x 1.6mm (copper foil area less than 3%).
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
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Analog electronics
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