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| 型號(hào)： | AD7948 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | +3.3 V/+5 V Multiplying 12-Bit DACs |
| 中文描述： | 3.3伏/ 5伏乘以12位DAC |
| 文件頁(yè)數(shù)： | 9/16頁(yè) |
| 文件大小： | 329K |
| 代理商： | AD7948 |
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AD7943/AD7945/AD7948
REV. B
–9–
AD7943 PIN FUNCTION DESCRIPTIONS
Pin Mnemonic
Description
I
OUT1
I
OUT2
AGND
DAC current output terminal 1.
DAC current output terminal 2. This should be connected to the AGND pin.
This pin connects to the back gates of the current steering switches. In normal operation, it should be connected
to the signal ground of the system. In biased single-supply operation it may be biased to some voltage between
0 V and the 1.23 V. See Figure 11 for more details.
This is the Strobe 1 input. Data is clocked into the input shift register on the rising edge of this signal.
STB3
must be high. STB2, STB4 must be low.
Active low inputs. When both of these are low, the DAC register is updated and the output will change to
reflect this.
Serial Data Input. Data on this line will be clocked into the input shift register on one of the Strobe inputs,
when they are enabled.
This is the Strobe 2 input. Data is clocked into the input shift register on the rising edge of this signal.
STB3
must be high. STB1, STB4 must be low.
This is the Strobe 3 input. Data is clocked into the input shift register on the falling edge of this signal. STB1,
STB2, STB4, must be low.
This is the Strobe 4 input. Data is clocked into the input shift register on the rising edge of this signal.
STB3
must be high. STB1, STB2 must be low.
Digital Ground.
Asynchronous CLR input. When this input is taken low, all 0s are loaded to the DAC latch.
Power supply input. This is nominally +5 V for Normal Mode Operation and +3.3 V to +5 V for Biased
Mode Operation.
DAC reference input.
DAC feedback resistor pin.
STB1
LD1
,
LD2
SRI
STB2
STB3
STB4
DGND
CLR
V
DD
V
REF
R
FB
AD7945 PIN FUNCTION DESCRIPTIONS
Pin Mnemonic
Description
I
OUT1
AGND
DAC current output terminal 1.
This pin connects to the back gates of the current steering switches. The DAC I
OUT2
terminal is also connected
internally to this point.
Digital Ground.
Digital Data Inputs.
Active Low, Chip Select Input.
Active Low, Write Input.
Power supply input. This is nominally +5 V for Normal Mode Operation and +3.3 V to +5 V for Biased Mode
Operation.
DAC reference input.
DAC feedback resistor pin.
DGND
DB11–DB0
CS
WR
V
DD
V
REF
R
FB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7948BN | +3.3 V/+5 V Multiplying 12-Bit DACs |
| AD7948BR | +3.3 V/+5 V Multiplying 12-Bit DACs |
| AD7948BRS | +3.3 V/+5 V Multiplying 12-Bit DACs |
| AD7943ARS-B | +3.3 V/+5 V Multiplying 12-Bit DACs |
| AD7945ARS-B | +3.3 V/+5 V Multiplying 12-Bit DACs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7948AN-B | 制造商:Rochester Electronics LLC 功能描述:BYTE 12-B IOUT DAC IC - Bulk 制造商:Analog Devices 功能描述: |
| AD7948ANZ-B | 功能描述:IC DAC 12BIT MULT PARALL 20DIP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,400 系列:- 設(shè)置時(shí)間:- 位數(shù):18 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:3 電壓電源:模擬和數(shù)字 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:36-TFBGA 供應(yīng)商設(shè)備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數(shù)目和類(lèi)型:* 采樣率（每秒）:* |
| AD7948ARS-B | 功能描述:IC DAC 12BIT MULT PARALL 20-SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,400 系列:- 設(shè)置時(shí)間:- 位數(shù):18 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:3 電壓電源:模擬和數(shù)字 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:36-TFBGA 供應(yīng)商設(shè)備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數(shù)目和類(lèi)型:* 采樣率（每秒）:* |
| AD7948ARS-BREEL | 功能描述:IC DAC 12BIT MULT PARALL 20-SSOP RoHS:否 類(lèi)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:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時(shí)間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類(lèi)型:8 電壓，單極 采樣率（每秒）:* |
| AD7948ARSZ-B | 功能描述:IC DAC 12BIT MULT PARALL 20SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)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(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類(lèi)型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱(chēng):MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
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