D/A Converter Series for Electronic Adjustments
Standard 8bit
8ch Type D/A Converters
BH2226FV,BH2226F
No.09052EBT05
●Description
The BH2226FV,BH2226F is an 8bit R-2R-type D/A converter with 8 channels. The D/A converter output and
serial / parallel conversion function can be switched with one command, and a built-in RESET function
ensures that the output voltage at all channels is Low during power up. A broad power supply voltage
range (2.7V-5.5V) is available, providing design flexibility.
●Features
1) Integrated expansion port function
2) Built-in RESET function
3) High speed output response characteristics
4) 3-line-type serial interface
5) Broad power supply voltage range: 2.7V-5.5V
●Applications
DVCs, DSCs, DVDs, CD-Rs, CD-RWs
●Line
up matrix
Parameter
Power source voltage range
Number of channels
Current consumption
Differential non linearity error
Integral non linearity error
Output current performance
Settling time
Data transfer frequency
Input format
Data latch method
Package
BH2226FV
2.7~5.5V
8ch
1.3 mA
±1.0LSB
±1.5LSB
±1.0mA
100µs
10MHz
CMOS
CSB method
SSOP-B16
BH2226F
2.7~5.5V
8ch
1.3 mA
±1.0LSB
±1.5LSB
±1.0mA
100µs
10MHz
CMOS
CSB method
SOP16
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© 2009 ROHM Co., Ltd. All rights reserved.
1/9
2009.07 - Rev.B
BH2226FV,BH2226F
●Absolute
Maximum Ratings
Parameter
Power source voltage
Terminal voltage
Symbol
VCC
VIN
TSTG
PD
Limits
-0.3~7.0
-0.3~VCC
-55~125
450
*1
*2
Technical Note
Unit
V
V
℃
mW
mW
(Ta=25℃)
Remarks
-
-
-
BH2226FV
BH2226F
St
orage temperature range
Power dissipation
500
*1 Derated at 4.5mW/
℃
at Ta>25℃
*2 Derated at 5.0mW/
℃
at Ta>25℃
*3 Please note that this product is not robust against radiation.
●Recommended
Operating Conditions
(Ta=25℃)
Parameter
VCC power source voltage
Terminal input voltage range
Analog output current
Operating temperature range
Serial clock frequency
D/A output limit load capacity
Symbol
VCC
VIN
IO
TOPR
FCLK
CL
MIN.
2.7
0
-1.0
-20
-
-
Limits
TYP.
-
-
-
-
1.0
-
MAX.
5.5
VCC
1.0
85
10.0
0.1
Unit
V
V
mA
℃
MHz
µF
Remarks
-
-
-
-
-
-
●Electrical
Characteristics
(Unless otherwise specified, VCC=3.0V, RL=OPEN, CL=0pF, Ta=25℃)
Limits
Parameter
Symbol
MIN.
TYP.
<Current consumption>
ICC
-
1.1
VCC system
ICCPD
-
5
<Logic interface>
L input voltage
VIL
GND
-
H input voltage
VIH
2.4
-
Input current
IIN
-10
-
L output voltage
VOL
-
-
H output voltage
VOH
VCC-0.4
-
<Buffer amplifier>
ZS1
GND
-
Output zero scale voltage
ZS3
GND
-
FS1
VCC-0.1
-
Output full scale voltage
FS3
VCC-0.3
-
<D/A converter precision>
Differential non linearity error
DNL
-1.0
-
Integral non linearity error
INL
-1.5
-
VCC power source voltage rise
trVCC
100
-
time
Power on reset release voltage
VPOR
-
1.9
MAX.
2.5
20
0.6
VCC
10
0.4
-
0.1
0.3
VCC
VCC
1.0
1.5
-
-
Unit
Conditions
mA
µA
V
V
µA
V
V
V
V
V
V
LSB
LSB
µs
V
CLK=1MHz, 80H setting
At power down setting
VCC=5V
VCC=5V
IOH=2.5mA
IOL=0.4mA
00H setting, at no load
00H setting, IOH=1.0mA
FFH setting, at no load
FFH setting, IOL=1.0mA
Input code 02H~FDH
Input code 02H~FDH
VCC=0→2.7V
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© 2009 ROHM Co., Ltd. All rights reserved.
2/9
2009.07 - Rev.B
BH2226FV,BH2226F
●Timing
Chart
（Unless
otherwise specified, VCC=3.0V, RL=OPEN, CL=0pF, Ta=25℃）
Limits
Parameter
Symbol
MIN.
TYP.
MAX.
CLK L level time
tCLKL
50
-
-
CLK H level time
tCLKH
50
-
-
DI setup time
tsDI
20
-
-
DI hold time
thDI
40
-
-
Parallel input setup time
tsPI
20
-
-
Parallel input hold time
thPI
40
-
-
CSB setup time
tsCSB
50
-
-
CSB hold time
thCSB
50
-
-
CSB H level time
tCSBH
50
-
-
D/A output settling time
tOUT
-
-
100
Parallel output delay time
tpOUT
-
-
600
Serial output delay time
tsOUT
-
-
350
Technical Note
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
Conditions
CL=50pF,RL=10kΩ
CL=50pF,RL=10kΩ
CL=50pF,RL=10kΩ
Fig.1
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© 2009 ROHM Co., Ltd. All rights reserved.
3/9
2009.07 - Rev.B
BH2226FV,BH2226F
●Terminal
Description / Block Diagrams
(BH2226FV,BH2226F)
Terminal
No.
Function
name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
VCC
RESETB
TEST
CSB
CLK
DI
SO
GND
Technical Note
1
2
Serial
3
Interface
4
5
16
15
14
13
12
11
10
9
Analog output terminal /
I/O input output terminal
Power source terminal
Reset terminal
Test terminal (normal connected to GND)
Chip select signal input terminal
Serial clock input terminal
Serial data input terminal
Serial data output terminal
Ground terminal
6
7
8
PowerOn
Reset
Fig.2
●Input-Output
equivalence circuits
Terminal
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
Equivalence Circuit
Terminal
DI
CLK
CSB
TEST
RESETB
Equivalence Circuit
SO
Fig.3 Input-Output equivalence circuits
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© 2009 ROHM Co., Ltd. All rights reserved.
4/9
2009.07 - Rev.B
BH2226FV,BH2226F
Technical Note
●Operation
Description
・Command
Transmission
The Control command consists of 3 lines of 12bit serial input data (MSB first).
DI data is read at the rising edge of the CLK, and becomes valid in the CSB Low area (before the CSB rise for 12bit data).
CSB
12
CLK
11
10
9
8
7
6
5
4
3
2
1
DI
X
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
Fig.4
Data Settings
D0
0
1
0
1
0
0
1
(Note)
D1
0
0
1
1
0
1
1
D2
0
0
0
0
1
1
1
D3
0
0
0
0
0
~
1
1
1
1
1
1
1
1
1
1
D4
0
0
0
0
0
D5
0
0
0
0
0
D6
0
0
0
0
0
D7
0
0
0
0
0
Setting
At D/A setting：GND
At D/A setting：(VCC-GND)/256x1
At D/A setting：(VCC-GND)/256 x 2
At D/A setting：(VCC-GND)/256 x 3
At D/A setting：(VCC-GND)/256 x 4
~
At D/A setting：(VCC-GND)/256 x 254
At D/A setting：(VCC-GND)/256 x 255
Default D[7:0]=00h
Channel Settings
D8
D9
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
D10
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D11
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Setting
Power down setting (default)
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
Power down release
Inconsequential
Inconsequential
I/O D/A select
I/O serial⇒Parallel
I/O parallel⇒Serial
I/O status setting
Input / Output D/A Selection settings
：Each
channel can be set for either I/O port or D/A converter output.
0: I/O mode (When I/O mode is selected, set the status as well.)
1: D/A mode (Set the I/O status to output mode.)
D0
D1
D2
D3
D4
D5
D6
D7
Description
Corresponding terminals for I/O or
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
D/A selection
I/O Status Setting : Set the status of the I/O input output terminal by D0 ~ D7.
0: input mode (High-Z status)
1: output mode
D0
D1
D2
D3
D4
D5
D6
D7
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
Description
Corresponding terminals for status
setting
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© 2009 ROHM Co., Ltd. All rights reserved.
5/9
2009.07 - Rev.B
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