參數資料
| 型號： | AD7247ABN |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT W/AMP W/BUFF 24-DIP |
| 產品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 15 |
| 系列： | DACPORT® |
| 設置時間： | 10µs |
| 位數： | 12 |
| 數據接口： | 并聯 |
| 轉換器數目： | 2 |
| 電壓電源： | 雙 ± |
| 功率耗散（最大）： | 1W |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 24-DIP（0.300"，7.62mm） |
| 供應商設備封裝： | 24-PDIP |
| 包裝： | 管件 |
| 輸出數目和類型： | 2 電壓，單極；2 電壓，雙極 |
FUNCTIONAL BLOCK DIAGRAMS
REV. 0
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
LC2MOS
Dual 12-Bit DACPORTs
AD7237A/AD7247A
FEATURES
Complete Dual 12-Bit DAC Comprising
Two 12-Bit CMOS DACs
On-Chip Voltage Reference
Output Amplifiers
Reference Buffer Amplifiers
Improved AD7237/AD7247:
12 V to 15 V Operation
Faster Interface –30 ns typ Data Setup Time
Parallel Loading Structure: AD7247A
(8+4) Loading Structure: AD7237A
Single or Dual Supply Operation
Low Power—165 mW typ in Single Supply
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
PRODUCT HIGHLIGHTS
1. The AD7237A/AD7247A is a dual 12-bit DACPORT
on a
single chip. This single chip design and small package size
offer considerable space saving and increased reliability over
multichip designs.
2. The improved interface times of the parts allow easy, direct
interfacing to most modern microprocessors, whether they
have 8-bit or 16-bit data bus structures.
3. The AD7237A/AD7247A features a wide power supply
range allowing operation from 12 V supplies.
DACPORT is a registered trademark of Analog Devices, Inc.
GENERAL DESCRIPTION
The AD7237A/AD7247A is an enhanced version of the industry
standard AD7237/AD7247. Improvements include operation
from 12 V to 15 V supplies, faster interface times and better
reference variations with VDD. Additional features include faster
settling times.
The AD7237A/AD7247A is a complete, dual, 12-bit, voltage
output digital-to-analog converter with output amplifiers and
Zener voltage reference on a monolithic CMOS chip. No exter-
nal user trims are required to achieve full specified performance.
Both parts are microprocessor compatible, with high speed data
latches and interface logic. The AD7247A accepts 12-bit paral-
lel data which is loaded into the respective DAC latch using the
WR
input and a separate Chip Select input for each DAC. The
AD7237A has a double buffered interface structure and an 8-bit
wide data bus with data loaded to the respective input latch in
two write operations. An asynchronous LDAC signal on the
AD7237A updates the DAC latches and analog outputs.
A REF OUT/REF IN function is provided which allows either
the on-chip 5 V reference or an external reference to be used as
a reference voltage for the part. For single supply operation, two
output ranges of 0 V to +5 V and 0 V to +10 V are available,
while these two ranges plus an additional
±5 V range are avail-
able with dual supplies. The output amplifiers are capable of de-
veloping +10 V across a 2 k
load to GND.
The AD7237A/AD7247A is fabricated in Linear Compatible
CMOS (LC
2MOS), an advanced, mixed technology process
that combines precision bipolar circuits with low power CMOS
logic. Both parts are available in a 24-pin, 0.3" wide plastic and
hermetic dual-in-line package (DIP) and are also packaged in a
24-lead small outline (SOIC) package.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7247ABNZ | 功能描述:IC DAC 12BIT W/AMP W/BUFF 24-DIP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:DACPORT® 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 |
| AD7247ABR | 功能描述:IC DAC 12BIT LC2MOS DUAL 24SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:DACPORT® 產品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設置時間:7µs 位數:16 數據接口:并聯 轉換器數目: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） 供應商設備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD7247ABR-REEL | 功能描述:IC DAC 12BIT W/AMP W/BUFF 24SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:DACPORT® 產品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設置時間:7µs 位數:16 數據接口:并聯 轉換器數目: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） 供應商設備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD7247ABRZ | 功能描述:IC DAC 12BIT LC2MOS DUAL 24SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:DACPORT® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數:12 數據接口:串行 轉換器數目: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） 供應商設備封裝:8-uMAX 包裝:管件 輸出數目和類型:2 電壓，單極 采樣率（每秒）:* 產品目錄頁面:1398 (CN2011-ZH PDF) |
| AD7247ABRZ-REEL | 功能描述:IC DAC 12BIT AMP/BUFF 24SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:DACPORT® 產品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設置時間:7µs 位數:16 數據接口:并聯 轉換器數目: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） 供應商設備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
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