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參數資料
| 型號： | AD7994BRU-0 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 2/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT 4CHAN I2C 16TSSOP |
| 標準包裝： | 96 |
| 位數： | 12 |
| 采樣率（每秒）： | 188k |
| 數據接口： | I²C，串行 |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 2.2mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 16-TSSOP |
| 包裝： | 管件 |
| 輸入數目和類型： | 4 個單端，單極 |
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AD7993/AD7994
Rev. 0 | Page 10 of 32
PIN CONFIGURATION AND PIN FUNCTION DESCRIPTIONS
AD7993/
AD7994
TOP VIEW
1
2
3
4
13
14
15
16
SDA
SCL
VDD
AGND
VIN4
10
9
VIN2
5
(Not to Scale)
ALERT/BUSY
12
11
AS
AGND
REFIN
6
VIN1
7
VIN3
8
AGND
03472-0-003
CONVST
AGND
Figure 3. 16-Lead TSSOP Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Function
1, 2, 3, 4, 16
AGND
Analog Ground. Ground reference point for all circuitry on the AD7993/AD7994. All analog input signals
should be referred to this AGND voltage.
5
VDD
Power Supply Input. The VDD range for the AD7993/AD7994 is from 2.7 V to 5.5 V.
6
REFIN
Voltage Reference Input. The external reference for the AD7993/AD7994 should be applied to this input pin.
The voltage range for the external reference is 1.2 V to VDD. A 0.1 F and 1 F capacitor should be placed
7
VIN1
Analog Input 1. Single-ended analog input channel. The input range is 0 V to REFIN.
8
VIN3
Analog Input 3. Single-ended analog input channel. The input range is 0 V to REFIN.
9
VIN4
Analog Input 4. Single-ended analog input channel. The input range is 0 V to REFIN.
10
VIN2
Analog Input 2. Single-ended analog input channel. The input range is 0 V to REFIN.
11
AS
Logic Input. Address select input that selects one of three I2C addresses for the AD7993/AD7994, as shown in
Table 6. The device address depends on the voltage applied to this pin.
12
CONVST
Logic Input Signal/Convert Start Signal. This is an edge-triggered logic input. The rising edge of this signal
powers up the part. The power-up time for the part is 1 s. The falling edge of CONVST places the track/hold
into hold mode and initiates a conversion. A power-up time of at least 1 s must be allowed for the CONVST
high pulse; otherwise, the conversion result is invalid (see the Modes of Operation section).
13
ALERT/BUSY
Digital Output, Selectable as an ALERT or BUSY Output Function. When configured as an ALERT, this pin acts
as an out-of-range indicator and, if enabled, becomes active when the conversion result violates the DATAHIGH
or DATALOW register values. See the Limit Registers section. When configured as a BUSY output, this pin
becomes active when a conversion is in progress. Open-drain output.
14
SDA
Digital I/O. Serial bus bidirectional data. Open-drain output. External pull-up resistor required.
15
SCL
Digital Input. Serial bus clock. External pull-up resistor required.
Table 6. I2C Address Selection
Part Number
AS Pin
I2C Address
AD7993-0
GND
010 0001
AD7993-0
VDD
010 0010
AD7993-1
GND
010 0011
AD7993-1
VDD
010 0100
AD7993-x1
Float
010 0000
AD7994-0
GND
010 0001
AD7994-0
VDD
010 0010
AD7994-1
GND
010 0011
AD7994-1
VDD
010 0100
AD7994-x
1
Float
010 0000
1 If the AS pin is left floating on any of the AD7993/AD7994 parts, the device address is 010 0000.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7994BRU-0REEL | 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7994BRU-1 | 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 16-Pin TSSOP 制造商:Rochester Electronics LLC 功能描述: |
| AD7994BRU-1REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 16-Pin TSSOP T/R |
| AD7994BRUZ0 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7994BRUZ-0 | 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
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