ROHM BH2227FV, BH2228FV Technical data

D/A Converter Series for Electronic Adjustments

Standard 8bit 4ch・6ch Type D/A Converters

BH2227FV, BH2228FV

●Description

The BH2227FV and BH2228FV ICs are 8bit R-2R-type D/A converters with 4 and 6 channels, respectively. Optimized circuitry allows two output voltages to be supplied (3V/5V). Furthermore, the built-in RESET function ensures that the output voltage at all channels is Low during power up. A broad power supply voltage range is available (2.7V-5.5V), providing design flexibility.

●Features

1) Suitable for 2 independent power sources (3V/5V)

2) Built-in RESET function

3) High speed output response characteristics

4) 3-line serial interface

5) Broad power supply voltage range: 2.7V-5.5V

●Applications

DVCs, DSCs, DVDs, CD-Rs, CD-RWs

●Lineup

Parameter BH2227FV BH2228FV

Power source voltage range 2.7 to 5.5V 2.7 to 5.5V

Number of channels 4ch 6ch

Current consumption 0.9mA 0.9mA

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 method CMOS CMOS

Data latch method CSB method CSB method

Package SSOP-B14 SSOP-B14

●Absolute Maximum Ratings(Ta=25℃)

Parameter Symbol Limits Unit Remarks

Power source voltage VCC -0.3 to 7.0 V -

Terminal voltage VIN -0.3 to VCC V Storage temperature range TSTG -55 to 125 ℃ -

Power dissipation PD 400*1 mW -

*1 Derated at 4.0mW/ ℃ at Ta>25℃ *2 This product is not robust against radiation.

No.11052EBT04

www.rohm.com

1/8

2011.08 - Rev.B

BH2227FV, BH2228FV

●Recommended Operating Conditions(Ta=25℃)

Parameter Symbol

VDD power source voltage VDD 2.7 - 5.5 V -

VFS voltage to be impressed VFS 2.7 - 5.5 V -

Terminal input voltage range VIN 0 - VDD V -

Analog output current IO -1.0 - 1.0 mA Action temperature range TOPR -20 - 85 ℃ -

Serial clock frequency FCLK - 1.0 10.0 MHz -

Limit load capacity CL - - 0.1 µF -

●Electrical Characteristics(Unless otherwise specified, VDD=VFS=3.0V, RL=OPEN, CL=0pF, Ta=25℃)

Parameter Symbol

<Current consumption> VDD system IDD - 0.5 1.5 mA VDD=5V，CLK=1MHz

VFS system IFS - 0.3 0.9 mA

L input voltage VIL VSS - 0.6 V VDD=5.0V

H input voltage VIH 2.4 - VDD V VDD=5.0V

Input current IIN -10 - 10 µA

Output zero scale voltage ZS

FS1

Output full scale voltage

FS2

Differential non linearity error DNL -1.0 - 1.0 LSB Input code 02H to FDH

Integral non linearity error INL -1.5 - 1.5 LSB Input code 02H to FDH VDD power source voltage rise time trVDD 100 - - µs VDD=0→2.7

Power ON reset release voltage VPOR - 1.9 - V

Min. Typ. Max.

VSS - 0.1 V 00h setting, at no load

VSS - 0.3 V 00h setting, IOL=1.0mA

VDD-0.1 - VDD V FFh setting, at no load

VDD-0.3 - VDD V FFh setting,IOH=1.0mA

VFS-0.1 - VFS V FFh setting, at no load

VFS-0.3 - VFS V FFh setting,IOH=1.0mA

Limits

Unit Remarks

Unit Conditions

Technical Note

www.rohm.com

2/8

2011.08 - Rev.B

BH2227FV, BH2228FV

A

●Timing Chart(Unless otherwise specified, VDD = VFS = 3.0V, RL = OPEN, CL = 0pF, Ta = 25℃)

Limits

Parameter Symbol

MIN. TYP. MAX.

CLK L level time

CLK H level time

DI setup time

DI hold time

CSB setup time

CSB hold time

CSB H level time

D/A Output settling time

tCLKL 50 - - ns

tCLKH 50 - - ns

tsDI 20 - - ns

thDI 40 - - ns

tsCSB 50 - - ns

thCSB 50 - - ns

tCSBH 50 - - ns

tOUT - - 100 µs CL=50pF,RL=10kΩ

tCLKL tCLKH

CLK

tsDI thDI

DI

tsCSB

thCSB

tCSBH

CSB

tOUT

nalog output

Fig.1

Technical Note

Unit Conditions

2.4V

0.6V

2.4V

0.6V

2.4V

0.6V

90% 10%

www.rohm.com

3/8

2011.08 - Rev.B