VREF+ V
參數資料
型號: AD7849CNZ
廠商: Analog Devices Inc
文件頁數: 18/20頁
文件大小: 0K
描述: IC DAC 16BIT SERIAL INP 20DIP
產品培訓模塊: Data Converter Fundamentals
DAC Architectures
標準包裝: 18
設置時間: 7µs
位數: 16
數據接口: 串行
轉換器數目: 1
電壓電源: 模擬和數字,雙 ±
功率耗散(最大): 100mW
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 20-DIP(0.300",7.62mm)
供應商設備封裝: 20-PDIP
包裝: 管件
輸出數目和類型: 1 電壓,單極;1 電壓,雙極
采樣率(每秒): 143k
AD7849
Rev. C | Page 7 of 20
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VREF+
VDD
NC
VOUT
ROFS
VREF–
VSS
SYNC
RSTIN
RSTOUT
AGND
SCLK
VCC
SDOUT
DCEN
BIN/COMP
DGND
LDAC
SDIN
CLR
1
2
3
4
20
19
18
17
5
16
6
15
7
14
8
13
9
12
10
11
NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
AD7849
TOP VIEW
(Not to Scale)
010
08-
003
Figure 2. Pin Configuration
Table 6. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
VREF+
VREF+ Input. The DAC is specified for VREF+ of 5 V. The DAC is fully multiplying so that the VREF+ range is +5 V to –5 V.
2
VREF
VREF Input. The DAC is specified for VREF of –5 V. The DAC is fully multiplying so that the VREF range is –5 V to +5 V.
3
VSS
Negative supply for the analog circuitry. This is nominally –15 V.
4
SYNC
Data Synchronization Logic Input. When it goes low, the internal logic is initialized in readiness for a new data-word.
5
SCLK
Serial Clock Logic Input. Data is clocked into the input register on each SCLK falling edge.
6
VCC
Positive supply for the digital circuitry. This is nominally 5 V.
7
SDOUT
Serial Data Output. With DCEN at Logic 1, this output is enabled, and the serial data in the input shift register is
clocked out on each rising edge of SCLK.
8
DCEN
Daisy-Chain Enable Logic Input. Connect this pin high if a daisy-chain interface is being used; otherwise, this
pin must be connected low.
9
BIN/COMP
Logic Input. This input selects the data format to be either binary or twos complement. In the unipolar output
range, natural binary format is selected by connecting the input to Logic 0. In the bipolar output range, offset
binary is selected by connecting this input to Logic 0, and twos complement is selected by connecting it to a
Logic 1.
10
DGND
Digital Ground. Ground reference point for the on-chip digital circuitry.
11
LDAC
Load DAC Logic Input. This input updates the DAC output. The DAC output is updated on the falling edge of
this signal, or alternatively, if this input is permanently low, an automatic update mode is selected where the
DAC is updated on the 16th falling SCLK edge.
12
SDIN
Serial Data Input. The 16-bit serial data-word is applied to this input.
13
CLR
Clear Logic Input. Taking this input low sets VOUT to 0 V in both the unipolar output range and the bipolar twos
complement output range. It sets VOUT to VREF– in the offset binary bipolar output range.
14
RSTIN
Reset Logic Input. This input allows external access to the internal reset logic. Applying Logic 0 to this input,
resets the DAC output to 0 V. In normal operation, it should be tied to Logic 1.
15
RSTOUT
Reset Logic Output. This is the output from the on-chip voltage monitor used in the reset circuit. It can be used
to control other system components, if desired.
16
AGND
This is the analog ground for the device. It is the point to which the output gets shorted in reset mode.
17
VDD
Positive Supply for the Analog Circuitry. This is 15 V nominal.
18
NC
No Connect. Leave unconnected.
19
VOUT
DAC Output Voltage Pin.
20
ROFS
Input to Summing Resistor of DAC Output Amplifier. This is used to select the output voltage ranges. Also, see
相關PDF資料
PDF描述
AD7538KR IC DAC 14BIT W/BUFF 24-SOIC
MAX9512ATE+T IC VIDEO FILTER AMP 16-TQFN
VI-23X-IV-F2 CONVERTER MOD DC/DC 5.2V 150W
VI-B5L-MU CONVERTER MOD DC/DC 28V 200W
VI-23V-IV-F2 CONVERTER MOD DC/DC 5.8V 150W
相關代理商/技術參數
參數描述
AD7849CR 功能描述:IC DAC 16BIT SRL INP 20-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 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
AD7849CR-REEL 功能描述:IC DAC 16BIT SRL INP 20-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 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
AD7849CRZ 功能描述:IC DAC 14/16BIT SRL-IN 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 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
AD7849CRZ-REEL 功能描述:IC DAC 14/16BIT SRL-IN 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 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
AD7849TQ 制造商:AD 制造商全稱:Analog Devices 功能描述:Serial Input, 14-Bit/16-Bit DAC