ROHM BH2227FV_09

D/A Converter Series for Electronic Adjustments
Standard 8bit 4ch・6ch Type
D/A Converters
BH2227FV, BH2228FV
No.09052EAT04
●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
Power source voltage range
BH2227FV
BH2228FV
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
Data latch method
CMOS
CMOS
CSB method
CSB method
SSOP-B14
SSOP-B14
Package
●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
-
TSTG
-55 to 125
℃
-
PD
400*1
mW
-
Storage temperature range
Power dissipation
*1 Derated at 4.0mW/ ℃ at Ta>25℃
*2 This product is not robust against radiation.
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1/8
2009.06 - Rev.A
Technical Note
BH2227FV, BH2228FV
●Recommended Operating Conditions(Ta=25℃)
Parameter
Symbol
Limits
Min.
Typ.
Max.
Unit
Remarks
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
-
IO
-1.0
-
1.0
mA
-
Action temperature range
TOPR
-20
-
85
℃
-
Serial clock frequency
FCLK
-
1.0
10.0
MHz
-
CL
-
-
0.1
µF
-
Analog output current
Limit load capacity
●Electrical Characteristics(Unless otherwise specified, VDD=VFS=3.0V, RL=OPEN, CL=0pF, Ta=25℃)
Parameter
Symbol
Limits
Min.
Typ.
Max.
Unit
Conditions
<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
VSS
-
0.1
V
<Logic interface>
<Buffer amplifier>
Output zero scale voltage
ZS
FS1
Output full scale voltage
FS2
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
<D/A converter precision>
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
Power ON reset release voltage
VPOR
-
1.9
-
V
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2/8
VDD=0→2.7
2009.06 - Rev.A
Technical Note
BH2227FV, BH2228FV
●Timing Chart(Unless otherwise specified, VDD = VFS = 3.0V, RL = OPEN, CL = 0pF, Ta = 25℃)
Parameter
Symbol
Limits
MIN.
TYP.
MAX.
Unit
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
CSB setup time
tsCSB
50
-
-
ns
CSB hold time
thCSB
50
-
-
ns
CSB H level time
tCSBH
50
-
-
ns
tOUT
-
-
100
µs
D/A Output settling time
tCLKL
Conditions
CL=50pF,RL=10kΩ
tCLKH
2.4V
0.6V
CLK
tsDI
thDI
2.4V
0.6V
DI
tsCSB
tCSBH
thCSB
2.4V
0.6V
CSB
tOUT
90%
10%
Analog output
Fig.1
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3/8
2009.06 - Rev.A
Technical Note
BH2227FV, BH2228FV
●Terminal Description / Block Diagrams
(BH2227FV)
Terminal Terminal name
1
AO1
2
AO2
3
TESTMONI1
4
TESTMONI2
5
AO3
6
AO4
7
NC
8
NC
9
VDD
10
11
12
CSB
CLK
DI
13
VFS
14
VSS
Function
Analog output terminal
Test terminal
(OPEN at normal use)
AO1
1
VDD
R2R
Analog output terminal
AO2
2
VDD
R2R
Internally not connected yet
TEST
MONI1
3
Power source terminal
(AO3, 4 full scale voltage
use in common)
TEST
MONI2
4
AO3
5
VDD
AO4
6
VDD
NC
7
Chip select signal input terminal
Serial clock input terminal
Serial data input terminal
AO1,2 full scale
Voltage setting terminal
Ground terminal
VFS
14 VSS
REG
VFS
13 VFS
REG
12 DI
Serial
Interface
11 CLK
VDD
REG
R2R
VDD
REG
R2R
10 CSB
PowerOn
Reset
9 VDD
8 NC
Fig.2
(BH2228FV)
Terminal Terminal name
Function
1
AO1
2
AO2
3
AO3
Analog output terminal
4
AO4
5
AO5
6
AO6
7
NC
Internally not connected yet
8
NC
Power source terminal
(AO4~6 full scale voltage use
9
VDD
in common)
Chip select signal input terminal
10
CSB
Serial clock input terminal
11
CLK
Serial data input terminal
12
DI
AO1,2,3 full scale
13
VFS
Voltage setting terminal
Ground terminal
14
VSS
AO1
1
VDD
AO2
2
VDD
AO3
3
AO4
4
AO5
5
AO6
6
NC
7
VDD
VFS
R2R
REG
14 VSS
VFS
R2R
REG
13 VFS
VFS
R2R
REG
VDD
VDD
R2R
VDD
R2R
VDD
VFS
REG
VDD
VDD
REG
VDD
R2R
REG
12
Serial
Interface
11 CLK
VDD
PowerOn
Reset
DI
VDD
10 CSB
9
VDD
8
NC
Fig.3
●Equivalent Circuits
Terminal
Equivalent circuit
VDD
AO1
AO2
AO3
AO4
AO5
AO6
VSS
Terminal
VDD
Equivalent circuit
VDD
VDD
VSS
VSS
DI
CLK
CSB
VSS
Fig.4 Equivalent circuit
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4/8
2009.06 - Rev.A
Technical Note
BH2227FV, BH2228FV
●Operation Description
Command Transmission
The Control command consists of 3-lines of 12bit serial input data (MSB first).
Data is read at the rise edge of CLK, and data becomes valid in the CSB Low area (before the CSB rise for 12bit data).
CSB
12
11
10
9
8
7
6
5
4
3
2
1
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
CLK
X
DI
X
Fig.5
Data Settings
D0
D1
0
0
1
0
0
1
1
1
0
0
D2
0
0
0
0
1
D3
0
0
0
0
0
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
1
1
1
1
1
1
1
1
~
0
1
1
1
Setting
GND
(VDD or VFS-GND)/256x1
(VDD or VFS-GND)/256x2
(VDD or VFS-GND)/256x3
(VDD or VFS-GND)/256x4
~
(VDD or VFS-GND)/256x254
(VDD or VFS-GND)/256x255
Note: Initial status D[7:0]=00h
Channel Settings
D8
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D9
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
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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
5/8
BH2227FV
Inconsequential
AO1
AO2
Inconsequential
Inconsequential
AO3
AO4
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
BH2228FV
Inconsequential
AO1
AO2
AO3
AO4
AO5
AO6
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
Inconsequential
2009.06 - Rev.A
Technical Note
BH2227FV, BH2228FV
●Electrical Characteristics Curves
0.6
0.5
0.4
85℃
0.3
25℃
-20℃
0.2
0.1
3.0
0.5
0.4
85℃
0.3
25℃
-20℃
0.2
0.1
0.0
0.0
0.0
1.0
2.0
3.0
4.0
5.0
0.0
6.0
Fig.6 VDD current
consumption
3.0
4.0
5.0
2.0
1.5
1.0
0.5
0.0
6.0
0
64
192
256
Fig.8 Output voltage
characteristic
0.25
VDD=3.0V
0.8
0.20
0.6
0.2
128
INPUT CODE [dec]
1.0
VDD=3.0V
0.3
INL [LSB]
0.0
-0.1
DNL [LSB]
0.4
0.1
0.2
0.0
-0.2
0.15
0.10
-0.4
-0.2
0.05
-0.6
-0.3
-0.8
-0.4
0.00
-1.0
64
128
192
256
0
64
INPUT CODE [dec]
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
2.0
3.0
4.0
0.0
256
5.0
80.0
IL=1.0mA
70.0
60.0
50.0
85℃
40.0
25℃
30.0
-20℃
20.0
10.0
0.0
0.0
6.0
1.0
2.0
3.0
4.0
5.0
Fig.12 Power source voltage
to integral non linearity error
1.5
1.0
0.5
-50
-25
0
25
50
75
100
TEMPARATURE:Ta[℃]
Fig.15 Reset release voltage
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6.0
-40
-60
-80
-20℃
-100
25℃
-120
85℃
-140
1.0
2.0
3.0
4.0
5.0
6.0
SUPPLY VOLTAGE:VCC[V]
Fig.14 Output full scale
voltage
3.0
80
-20℃
60
25℃
85℃
40
20
2.5
2.0
1.5
VIH
1.0
VIL
0.5
0.0
0
0.0
5.0
IL=1.0mA
0.0
INPUT VOLTAGE:VIL,VIH[V]
SETTLING TIME:tOUT[µs]
2.0
4.0
0
-20
6.0
100
2.5
3.0
differential non linearity error
Fig.13 Output zero scale
voltage
3.0
2.0
Fig.11 Power source voltage to
SUPPLY VOLTAGE:VCC[V]
SUPPLY VOLTAGE:VCC[V]
1.0
SUPPLY VOLTAGE:VCC[V]
Fig.10 Integral non linearity
error
ZERO SCALE VOLTAGE:ZS[mV]
0.45
1.0
192
INPUT CODE [dec]
Fig.9 Differential non linearity
error
0.0
128
FULL SCALE VOLTAGE:FS[mV]
0
INL [LSB]
2.0
Fig.7 VFS current
consumption
0.4
DNL [LSB]
1.0
VDD=3.0V
2.5
SUPPLY VOLTAGE:VFS[V]
SUPPLY VOLTAGE:VDD[V]
RESET VOLTAGE:VPOR[V]
OUTPUT VOLTAGE:Vo[V]
CIRCUIT CURRENT:IFS[mA]
CIRCUIT CURRENT:IDD[mA]
0.6
0.0
1.0
2.0
3.0
4.0
5.0
SUPPLY VOLTAGE:VCC[V]
Fig.16 Settling time
6/8
6.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
SUPPLY VOLTAGE:VCC[V]
Fig.17 Input voltage
2009.06 - Rev.A
Technical Note
BH2227FV, BH2228FV
●Operation Notes
(1) Absolute maximum ratings
Operating or testing the device over the maximum specifications may damage the part itself as well as peripheral
components. Therefore, please ensure that the specifications are not exceeded.
(2) GND potential
Ensure that the GND terminal is at the lowest potential under all operating conditions.
(3) Thermal design
Use a thermal design that allows for a sufficient margin regarding power dissipation (Pd) under actual operating
conditions.
(4) Terminal shorts and mis-mounting
Incorrect orientation or misalignment of the IC when mounting to the PCB may damage part. Short-circuits caused by The
introduction of foreign matter between the output terminals or across the output and power supply or GND may also
result in destruction.
(5) Operation in a strong magnetic field
Operation in a strong electromagnetic field may cause malfunction.
(6) Set the power source voltage so that VDD ≧ VFS.
(7) Reset function
The power on reset circuit, which initializes internal settings, may malfunction during abrupt power ons.
Therefore, set the time constant so as to satisfy the power source rise time.
●Thermal Derating Curve
・SSOP-B14
500
PD [mW]
400
300
200
100
0
0
25
50
75
100
125
Ta [℃]
Board size : 70 x 70 x 1.6mm
Material : FR4 glass epoxy board (copper foil area less than 3%)
Fig.18
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7/8
2009.06 - Rev.A
Technical Note
BH2227FV, BH2228FV
●Ordering part number
B
H
2
Part No.
2
2
7
F
Part No.
V
-
E
Package
FV: SSOP-B14
2
Packaging and forming specification
E2: Embossed tape and reel
SSOP-B14
<Tape and Reel information>
5.0 ± 0.2
8
0.3Min.
4.4 ± 0.2
6.4 ± 0.3
14
1
Tape
Embossed carrier tape
Quantity
2500pcs
Direction
of feed
E2
The direction is the 1pin of product is at the upper left when you hold
( reel on the left hand and you pull out the tape on the right hand
)
7
0.10
1.15 ± 0.1
0.15 ± 0.1
0.65
0.1
0.22 ± 0.1
1pin
Reel
(Unit : mm)
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Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2009.06 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,
fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of
any of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
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obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
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