View BH2227FV_4559832.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

D/A Converter Series for Electronic Adjustments
Standard 8bit 4ch6ch 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 Number of channels Current consumption Differential non linearity error Integral non linearity error Output current performance Settling time Data transfer frequency Input method Data latch method Package Absolute Maximum Ratings(Ta=25) Parameter Power source voltage Terminal voltage Storage temperature range Power dissipation
*1 Derated at 4.0mW/ at Ta>25 *2 This product is not robust against radiation.
BH2227FV 2.7 to 5.5V 4ch 0.9mA 1.0LSB 1.5LSB 1.0mA 100s 10MHz CMOS CSB method SSOP-B14
BH2228FV 2.7 to 5.5V 6ch 0.9mA 1.0LSB 1.5LSB 1.0mA 100s 10MHz CMOS CSB method SSOP-B14
Symbol VCC VIN TSTG PD
Limits -0.3 to 7.0 -0.3 to VCC -55 to 125 400*1
Unit V V mW
Remarks -
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
1/8
2009.06 - Rev.A
BH2227FV, BH2228FV
Recommended Operating Conditions(Ta=25) Parameter VDD power source voltage VFS voltage to be impressed Terminal input voltage range Analog output current Action temperature range Serial clock frequency Limit load capacity Symbol VDD VFS VIN IO TOPR FCLK CL Limits Min. 2.7 2.7 0 -1.0 -20 Typ. 1.0 Max. 5.5 5.5 VDD 1.0 85 10.0 0.1 Unit V V V mA MHz F
Technical Note
Remarks -
Electrical Characteristics(Unless otherwise specified, VDD=VFS=3.0V, RL=OPEN, CL=0pF, Ta=25) Parameter VDD system VFS system L input voltage H input voltage Input current Output zero scale voltage ZS FS1 Output full scale voltage FS2 Differential non linearity error Integral non linearity error VDD power source voltage rise time Power ON reset release voltage DNL INL trVDD VPOR -1.0 -1.5 100 1.9 1.0 1.5 LSB LSB s V Input code 02H to FDH Input code 02H to FDH VDD=02.7 VSS VSS VDD-0.1 VDD-0.3 VFS-0.1 VFS-0.3 0.1 0.3 VDD VDD VFS VFS V V V V V V 00h setting, at no load 00h setting, IOL=1.0mA FFh setting, at no load FFh setting,IOH=1.0mA FFh setting, at no load FFh setting,IOH=1.0mA VIL VIH IIN VSS 2.4 -10 0.6 VDD 10 V V A VDD=5.0V VDD=5.0V IDD IFS 0.5 0.3 1.5 0.9 mA mA VDD=5VCLK=1MHz Symbol Limits Min. Typ. Max. Unit Conditions
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
2/8
2009.06 - Rev.A
BH2227FV, BH2228FV
Timing Chart(Unless otherwise specified, VDD = VFS = 3.0V, RL = OPEN, CL = 0pF, Ta = 25) Parameter 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 Symbol tCLKL tCLKH tsDI thDI tsCSB thCSB tCSBH tOUT Limits MIN. 50 50 20 40 50 50 50 TYP. MAX. 100 Unit ns ns ns ns ns ns ns s
Technical Note
Conditions
CL=50pF,RL=10k
tCLKL CLK tsDI DI tsCSB CSB
tCLKH 2.4V 0.6V thDI 2.4V 0.6V thCSB tCSBH 2.4V 0.6V tOUT 90% 10%
Analog output
Fig.1
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
3/8
2009.06 - Rev.A
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 10 11 12 13 14 VDD CSB CLK DI VFS VSS
Technical Note
Function Analog output terminal Test terminal (OPEN at normal use) Analog output terminal Internally not connected yet Power source terminal (AO3, 4 full scale voltage use in common)
Chip select signal input terminal
VDD VFS
AO1 AO2 TEST MONI1 TEST MONI2 AO3 AO4 NC
1 2 3 4 5 6 7
R2R R2R
REG REG Serial
Interface
14 VSS 13 VFS 12 DI 11 CLK 10 CSB 9 VDD 8 NC
VDD
VFS
VDD
VDD
R2R R2R
REG
PowerOn
Reset
Serial clock input terminal Serial data input terminal AO1,2 full scale Voltage setting terminal Ground terminal
VDD
VDD
REG
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 Equivalent Circuits Terminal
VDD
AO1 AO2 AO3 AO4 AO5 AO6 NC
1 2 3 4 5 6 7
VDD
VFS
R2R R2R R2R R2R R2R R2R
REG
VFS
VFS
14 VSS 13 VFS
VDD
REG
VFS
VDD
REG
VDD
VDD
VDD
REG REG
Serial Interface
VDD
12
DI
11 CLK 10 CSB 9 8 VDD NC
VDD
VDD
VDD
VDD
REG
PowerOn Reset
VDD
Fig.3
Equivalent circuit
VDD
Terminal
Equivalent circuit
VDD VDD
AO1 AO2 AO3 AO4 AO5 AO6
VSS
VSS
DI CLK CSB
VSS VSS
Fig.4 Equivalent circuit
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
4/8
2009.06 - Rev.A
BH2227FV, BH2228FV
Technical Note
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 CLK DI X D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X 11 10 9 8 7 6 5 4 3 2 1
Fig.5
Data Settings D0 D1 0 0 1 0 0 1 1 1 0 0 0 1 1 1
D2 0 0 0 0 1 1 1
D3 0 0 0 0 0 ~ 1 1
D4 0 0 0 0 0 1 1
D5 0 0 0 0 0 1 1
D6 0 0 0 0 0 1 1
D7 0 0 0 0 0 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
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
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
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
5/8
2009.06 - Rev.A
BH2227FV, BH2228FV
Electrical Characteristics Curves
0.6 0.6
3.0
Technical Note
CIRCUIT CURRENT:IDD[mA]
CIRCUIT CURRENT:IFS[mA]
0.5 0.4 0.3 0.2 0.1 0.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0
85 25 -20
0.5 0.4 0.3 0.2 0.1 0.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0
85 25 -20
OUTPUT VOLTAGE:Vo[V]
2.5 2.0 1.5 1.0 0.5 0.0 0
VDD=3.0V
64
128
192
256
SUPPLY VOLTAGE:VDD[V]
SUPPLY VOLTAGE:VFS[V]
INPUT CODE [dec]
Fig.6 VDD current consumption
Fig.7 VFS current consumption
Fig.8 Output voltage characteristic
0.4 0.3 0.2
VDD=3.0V
1.0 0.8 0.6 0.4
VDD=3.0V
0.25 0.20
DNL [LSB]
DNL [LSB]
INL [LSB]
0.1 0.0 -0.1 -0.2 -0.3 -0.4 0 64 128 192 256
0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 0 64 128 192 256
0.15 0.10
0.05 0.00 0.0 1.0 2.0 3.0 4.0 5.0 6.0
INPUT CODE [dec]
INPUT CODE [dec]
SUPPLY VOLTAGE:VCC[V]
Fig.9 Differential non linearity error
Fig.10 Integral non linearity error
Fig.11 Power source voltage to
differential non linearity error
ZERO SCALE VOLTAGE:ZS[mV]
0.40 0.35
70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 0.0
IL=1.0mA
FULL SCALE VOLTAGE:FS[mV]
0.45
80.0
0 -20 -40 -60 -80 -100 -120 -140 0.0 1.0 2.0 3.0 4.0 5.0 6.0
-20 25 85 IL=1.0mA
INL [LSB]
0.30 0.25 0.20 0.15 0.10 0.05 0.00 0.0 1.0 2.0 3.0 4.0 5.0 6.0
85 25 -20
1.0
2.0
3.0
4.0
5.0
6.0
SUPPLY VOLTAGE:VCC[V]
SUPPLY VOLTAGE:VCC[V]
SUPPLY VOLTAGE:VCC[V]
Fig.12 Power source voltage to integral non linearity error
Fig.13 Output zero scale voltage
Fig.14 Output full scale voltage
3.0
100
3.0
RESET VOLTAGE:VPOR[V]
INPUT VOLTAGE:VIL,VIH[V]
SETTLING TIME:tOUT[s]
2.5 2.0 1.5 1.0 0.5 0.0 -50 -25 0 25 50 75 100
80 60 40
-20 25 85
2.5 2.0 1.5
VIH
1.0 0.5 0.0
VIL
20 0 0.0 1.0 2.0 3.0 4.0 5.0 6.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
TEMPARATURE:Ta[]
SUPPLY VOLTAGE:VCC[V]
SUPPLY VOLTAGE:VCC[V]
Fig.15 Reset release voltage
Fig.16 Settling time
Fig.17 Input voltage
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
6/8
2009.06 - Rev.A
BH2227FV, BH2228FV
Technical Note
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
500 400 PD [mW] 300 200 100 0 0 25 50 Ta [] Board size : 70 x 70 x 1.6mm Material : FR4 glass epoxy board (copper foil area less than 3%) 75 100 125
Fig.18
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
7/8
2009.06 - Rev.A
BH2227FV, BH2228FV
Ordering part number
Technical Note
B
H
2
Part No.
2
2
7
F
V
-
E
2
Part No.
Package FV: SSOP-B14
Packaging and forming specification E2: Embossed tape and reel
SSOP-B14
5.0 0.2
14 8

Tape Quantity
0.3Min.
Embossed carrier tape 2500pcs E2
The direction is the 1pin of product is at the upper left when you hold
6.4 0.3
4.4 0.2
Direction of feed
( reel on the left hand and you pull out the tape on the right hand
)
1
7
0.15 0.1
1.15 0.1
0.10
0.65
0.1
0.22 0.1
1pin
(Unit : mm)
Direction of feed
Reel
Order quantity needs to be multiple of the minimum quantity.
www.rohm.com (c) 2009 RzOHM Co., Ltd. All rights reserved.
8/8
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 be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to 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.
ROHM Customer Support System
http://www.rohm.com/contact/
www.rohm.com (c) 2009 ROHM Co., Ltd. All rights reserved.
R0039A

▲Up To Search▲

Price & Availability of BH2227FV

	To Download BH2227FV Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .