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參數(shù)資料
| 型號(hào)： | AD7809* |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | High Efficiency Step-Down and Inverting DC/DC Converter; Package: PDIP; No of Pins: 8; Temperature Range: 0°C to +70°C |
| 中文描述： | 3.3伏至5伏四/八通道10位DAC |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 300K |
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GENERAL DESCRIPTION
The AD7804/AD7808 are quad/octal 10-bit digital-to-analog
converters, with serial load capabilities, while the AD7805/AD7809
are quad/octal 10-bit digital-to-analog converters with parallel
load capabilities. These parts operate from a +3.3 V to +5 V
(
±
10%) power supply and incorporates an on-chip reference.
These DACs provide output signals in the form of V
BIAS
±
V
SWING
.
V
SWING
is derived internally from V
BIAS
. On-chip control registers
include a system control register and channel control registers.
The system control register has control over all DACs in the
package. The channel control registers allow individual control
of DACs. The complete transfer function of each individual
DAC can be shifted around the V
BIAS
point using an on-chip
Sub DAC. All DACs contain double buffered data inputs,
which allow all analog outputs to be simultaneously updated
using the asynchronous LDAC input.
Control Features
Hardware Clear
System Control
Power Down
System Standby
2
System Clear
Input Coding
Channel Control
Channel Standby
2
Channel Clear
V
BIAS
NOTES
1
Power-down function powers down all internal circuitry including the reference.
2
Standby functions power down all circuitry except for the reference.
Channels Controlled
All
Main DAC
Sub DAC
All
All
All
All
Selective
Selective
Selective
FUNCTIONAL BLOCK DIAGRAMS
V
OUT
D
V
OUT
C
V
OUT
B
V
OUT
A
CCHANNEL C
CCHANNEL B
CCHANNEL A
REDAC
DAC D
V
BIAS
RDATA
AV
DD
DIVIDER
CCHANNEL D
REFIN
REFOUT
LDAC
CLR
AV
DD
DV
DD
AGND DGND
CLKIN
SDIN
FSIN
AD7804/
AD7808
COMP
PRESET
REDAC
DAC C
V
BIAS
RDATA
REDAC
DAC B
V
BIAS
RDATA
MUX
REDAC
DAC A
V
BIAS
RDATA
COSYSTEM
CINPUT SHIFT
MUX
MUX
1.23V REF
MUX
V
OUT
G*
V
OUT
E*
V
OUT
H*
V
OUT
F*
PD
**
**
ONLY AD7804 SHOWN FOR CLARITY
*
*SHOWS ADDITIONAL CHANNELS ON THE AD7808
**PIN ON THE AD7808 ONLY
V
OUT
D
V
OUT
C
V
OUT
B
V
OUT
A
CCHANNEL C
CCHANNEL B
CCHANNEL A
REDAC
DAC D
V
BIAS
RDATA
AV
DD
DIVIDER
CCHANNEL D
REFIN
REFOUT
LDAC
CLR
AV
DD
DV
DD
AGND DGND
WR
CS
AD7805/
AD7809
COMP
PRESET
MUX
REDAC
DAC C
V
BIAS
RDATA
REDAC
DAC B
V
BIAS
RDATA
MUX
REDAC
DAC A
V
BIAS
RDATA
COSYSTEM
RINPUT
MUX
MUX
1.23V REF
CLOGIC
MODE A0
**
ONLY AD7805 SHOWN FOR CLARITY
*
*SHOWS ADDITIONAL CHANNELS ON THE AD7809
**PIN ON THE AD7809 ONLY
A1
DB9 DB2
DB1 DB0
V
OUT
G*
V
OUT
H*
PD
**
A2**
V
OUT
E*
V
OUT
F*
*
Patent pending.
Index on Page 26.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
+3.3 V to +5 V Quad/Octal 10-Bit DACs
AD7804/AD7805/AD7808/AD7809*
FEATURES
Four 10-Bit DACs in One Package
Serial and Parallel Loading Facilities Available
AD7804 Quad 10-Bit Serial Loading
AD7805 Quad 10-Bit Parallel Loading
AD7808 Octal 10-Bit Serial Loading
AD7809 Octal 10-Bit Parallel Loading
+3.3 V to +5 V Operation
Power-Down Mode
Power-On Reset
Standby Mode (All DACs/Individual DACs)
Low Power All CMOS Construction
10-Bit Resolution
Double Buffered DAC Registers
Dual External Reference Capability
APPLICATIONS
Optical Disk Drives
Instrumentation and Communication Systems
Process Control and Voltage Setpoint Control
Trim Potentiometer Replacement
Automatic Calibration
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7809BST | +3.3 V to +5 V Quad/Octal 10-Bit DACs |
| AD7810YRM | 2.7 V to 5.5 V, 2 us, 10-Bit ADC in 8-Lead microSOIC/DIP |
| AD7810 | 2.7 V to 5.5 V, 2 us, 10-Bit ADC in 8-Lead microSOIC/DIP |
| AD7810YN | 2.7 V to 5.5 V, 2 us, 10-Bit ADC in 8-Lead microSOIC/DIP |
| AD7810YR | ECONOLINE: REC2.2-S_DR/H1 - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- UL94V-0 Package Material- Continuous Short Circiut Protection- Internal SMD design- 100% Burned In- Efficiency to 75% |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7809BST | 制造商:Analog Devices 功能描述:DAC 8-CH 10-bit 44-Pin TQFP 制造商:Rochester Electronics LLC 功能描述:OCTAL 10-BIT PARALLEL DAC I.C. - Bulk 制造商:Analog Devices 功能描述:IC 10-BIT DAC |
| AD7809BST-REEL | 制造商:Analog Devices 功能描述:DAC 8-CH 10-bit 44-Pin TQFP T/R |
| AD7809BSTZ | 功能描述:IC DAC 10BIT OCTAL PARALL 44TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時(shí)間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
| AD7809BSTZ-REEL | 功能描述:IC DAC 10BIT OCTAL PARALL 44TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
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