ROHM BH2226FV, BH2226F Technical data
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 BH2226FV BH2226F
Power source voltage range 2.7~5.5V 2.7~5.5V
Number of channels 8ch 8ch
Current consumption 1.3 mA 1.3 mA
Differential non linearity error ±1.0LSB ±1.0LSB
Integral non linearity error ±1.5LSB ±1.5LSB
Output current performance ±1.0mA ±1.0mA
Settling time 100µs 100µs
Data transfer frequency 10MHz 10MHz
Input format CMOS CMOS
Data latch method CSB method CSB method
Package SSOP-B16 SOP16
www.rohm.com
1/9
© 2009 ROHM Co., Ltd. All rights reserved.
2009.07 - Rev.B
BH2226FV,BH2226F
Technical Note
●Absolute Maximum Ratings
(Ta=25℃)
Parameter Symbol Limits Unit Remarks
Power source voltage VCC -0.3~7.0 V Terminal voltage VIN -0.3~VCC V -
Storage temperature ran ge
Power dissipation PD
TSTG -55~125 ℃ -
*1
mW BH2226FV
450
500*2 mW BH2226F
*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 Symbol
MIN. TYP. MAX.
Limits
Unit Remarks
VCC power source voltage VCC 2.7 - 5.5 V Terminal input voltage range VIN 0 - VCC V Analog output current IO -1.0 - 1.0 mA Operating temperature range TOPR -20 - 85 ℃ Serial clock frequency FCLK - 1.0 10.0 MHz D/A output limit load capacity CL - - 0.1 µF -
●Electrical Characteristics
(Unless otherwise specified, VCC=3.0V, RL=OPEN, CL=0pF, Ta=25℃)
Parameter Symbol
MIN. TYP. MAX.
Limits
Unit Conditions
<Current consumption>
VCC system
ICC - 1.1 2.5 mA CLK=1MHz, 80H setting
ICCPD - 5 20 µA At power down setting
<Logic interface>
L input voltage VIL GND - 0.6 V VCC=5V
H input voltage VIH 2.4 - VCC V VCC=5V
Input current IIN -10 - 10 µA
L output voltage VOL - - 0.4 V IOH=2.5mA
H output voltage VOH VCC-0.4 - - V IOL=0.4mA
<Buffer amplifier>
Output zero scale voltage
Output full scale voltage
ZS1 GND - 0.1 V 00H setting, at no load
ZS3 GND - 0.3 V 00H setting, IOH=1.0mA
FS1 VCC-0.1 - VCC V FFH setting, at no load
FS3 VCC-0.3 - VCC V FFH setting, IOL=1.0mA
<D/A converter precision>
Differential non linearity error DNL -1.0 - 1.0 LSB Input code 02H~FDH
Integral non linearity error INL -1.5 - 1.5 LSB Input code 02H~FDH
VCC power source voltage rise
time
trVCC 100 - - µs VCC=0→2.7V
Power on reset release voltage VPOR - 1.9 - V
www.rohm.com
2/9
© 2009 ROHM Co., Ltd. All rights reserved.
2009.07 - Rev.B
BH2226FV,BH2226F
●Timing Chart
（Unless otherwise specified, VCC=3.0V, RL=OPEN, CL=0pF, Ta=25℃）
Parameter Symbol
CLK L level time tCLKL 50 - - ns
CLK H level time tCLKH 50 - - ns
DI setup time tsDI 20 - - ns
DI hold time thDI 40 - - ns
Parallel input setup time tsPI 20 - - ns
Parallel input hold time thPI 40 - - ns
CSB setup time tsCSB 50 - - ns
CSB hold time thCSB 50 - - ns
CSB H level time tCSBH 50 - - ns
D/A output settling time tOUT - - 100 µs CL=50pF,RL=10kΩ
Parallel output delay time tpOUT - - 600 ns CL=50pF,RL=10kΩ
Serial output delay time tsOUT - - 350 ns CL=50pF,RL=10kΩ
MIN. TYP. MAX.
Limits
Fig.1
Unit Conditions
Technical Note
www.rohm.com
3/9
© 2009 ROHM Co., Ltd. All rights reserved.
2009.07 - Rev.B
Loading...