參數資料
| 型號： | AD8803ARZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/16頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT OCTAL W/SD 16SOIC |
| 產品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 2,500 |
| 系列： | TrimDAC® |
| 設置時間： | 600ns |
| 位數： | 8 |
| 數據接口： | 串行 |
| 轉換器數目： | 8 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 27.5mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SOIC |
| 包裝： | 帶卷 (TR) |
| 輸出數目和類型： | 8 電壓，單極 |
| 采樣率（每秒）： | 1.7M |
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
Octal 8-Bit TrimDAC
with Power Shutdown
AD8801/AD8803
Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FEATURES
Low Cost
Replaces Eight Potentiometers
Eight Individually Programmable Outputs
Three-Wire Serial Input
Power Shutdown
≤ 25 W Including I
DD and IREF
Midscale Preset, AD8801
Separate VREFL Range Setting, AD8803
+3 V to +5 V Single Supply Operation
APPLICATIONS
Automatic Adjustment
Trimmer Potentiometer Replacement
Video and Audio Equipment Gain and Offset Adjustment
Portable and Battery Operated Equipment
GENERAL DESCRIPTION
The AD8801/AD8803 provides eight digitally controlled dc
voltage outputs. This potentiometer divider TrimDAC
allows
replacement of the mechanical trimmer function in new designs.
The AD8801/AD8803 is ideal for dc voltage adjustment
applications.
Easily programmed by serial interfaced microcontroller ports,
the AD8801 with its midscale preset is ideal for potentiometer
replacement where adjustments start at a nominal value. Appli-
cations such as gain control of video amplifiers, voltage con-
trolled frequencies and bandwidths in video equipment,
geometric correction and automatic adjustment in CRT com-
puter graphic displays are a few of the many applications ideally
suited for these parts. The AD8803 provides independent con-
trol of both the top and bottom end of the potentiometer divider
allowing a separate zero-scale voltage setting determined by the
VREFL pin. This is helpful for maximizing the resolution of de-
vices with a limited allowable voltage control range.
FUNCTIONAL BLOCK DIAGRAM
(DACs 2–7 Omitted for Clarity)
Internally the AD8801/AD8803 contain eight voltage output
digital-to-analog converters, sharing a common reference volt-
age input.
Each DAC has its own DAC register that holds its output state.
These DAC registers are updated from an internal serial-to-par-
allel shift register that is loaded from a standard three-wire serial
input digital interface. Eleven data bits make up the data word
clocked into the serial input register. This data word is decoded
where the first 3 bits determine the address of the DAC register
to be loaded with the last 8 bits of data. The AD8801/AD8803
consumes only 5
A from 5 V power supplies. In addition, in
shutdown mode reference input current consumption is also re-
duced to 5
A while saving the DAC latch settings for use after
return to normal operation.
The AD8801/AD8803 is available in 16-pin plastic DIP and the
1.5 mm height SO-16 surface mount packages.
TrimDAC is a registered trademark of Analog Devices, Inc.
DAC 8 VOUT
VREFH
VREFL
.
AD8801/AD8803
VREFL
VREFH
O1
O8
SHDN
RS
CS
CLK
SDI
GND
VDD
8
88
8
3
DAC
SELECT
11-BIT
SERIAL
LATCH
D
CK RS
1
8
ADDRESS
8-BIT
LATCH
CK
RS
8-BIT
LATCH
CK
RS
DAC 1 VOUT
VREFH
VREFL
See the AD8802/AD8804 for a twelve channel version of this product.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8804 | 制造商:AD 制造商全稱:Analog Devices 功能描述:12 Channel, 8-Bit TrimDACs with Power Shutdown |
| AD8804AN | 制造商:Analog Devices 功能描述:DAC 12-CH R-2R 8-bit 20-Pin PDIP N Tube 制造商:Rochester Electronics LLC 功能描述:12CH 8BIT TDAC W/VREFL SHDWN - Bulk |
| AD8804ANZ | 功能描述:IC DAC 8BIT 12CH W/SD 20DIP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:TrimDAC® 標準包裝:1 系列:- 設置時間:4.5µs 位數:12 數據接口:串行，SPI? 轉換器數目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD8804AR | 功能描述:IC DAC 8BIT 12CH W/SD 20-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:TrimDAC® 標準包裝:2,400 系列:- 設置時間:- 位數:18 數據接口:串行 轉換器數目:3 電壓電源:模擬和數字 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:36-TFBGA 供應商設備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數目和類型:* 采樣率（每秒）:* |
| AD8804AR-REEL | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
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