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參數資料
| 型號： | AD7994 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 4-Channel, 12-/10-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP |
| 中文描述： | 4通道，12-/10-Bit ADC的16 - I2C兼容接口的無鉛TSSOP封裝 |
| 文件頁數： | 8/27頁 |
| 文件大小： | 277K |
| 代理商： | AD7994 |
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AD7994/AD7993
–8–
REV. PrF
PRELIMINARY TECHNICAL DATA
PIN FUNCTION DESCRIPTION
Pin
Mnemonic
Function
AGND
Analog Ground. Ground reference point for all circuitry on the AD7994/AD7993. All analog
input signals should be referred to this GND voltage.
Power Supply Input. The V
DD
range for the AD7994/AD7993 is from +2.7V to +5.5V.
Voltage Reference Input. The External Reference for the AD7994/AD7993 should 0.1 μF
capacitor should be placed between the REF
IN
pin and AGND.
Analog Input 1. Single-ended analog input channel. The input range is 0V to REF
IN
.
Analog Input 3. Single-ended analog input channel. The input range is 0V to REF
IN
.
Analog Input 4. Single-ended analog input channel. The input range is 0V to REF
IN
.
Analog Input 2. Single-ended analog input channel. The input range is 0V to REF
IN
.
Logic Input. Address Select Input which selects one of three I
2
C addresses for the AD7994/
AD7993 as shown in Table I.
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
μ
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
μ
s must be allowed for the
CONVST
high pulse, otherwise the conver-
sion result will be invalid. (See Modes of Operation Section)
Digital Output, selectable as an ALERT or BUSY output function. When configured as an
ALERT output, this pin acts as an Out of Range Indicator, and if enabled becomes active
when the conversion result violates the DATA
HIGH
or DATA
LOW
values. See Limit Registers
section. When configured as a BUSY output, this pin becomes active when a conversion is in
progress.
Digital I/O. Serial Bus Bi-directional Data. Open-drain output. External pull-up resistor
required.
Digital Input. Serial Bus Clock. External pull-up resistor required.
V
DD
REF
IN
V
IN
1
V
IN
3
V
IN
4
V
IN
2
AS
CONVST
ALERT/BUSY
SDA
SCL
AD7994/AD7993 PIN CONFIGURATION TSSOP
AD7994
TOP VIEW
1
2
3
4
13
14
15
16
SDA
SCL
VDD
REFIN
VIN1
VIN3
AGND
VIN4
5
(Not to Scale)
ALERT
12
AGND
11
AS
10
9
AGND
6
7
8
AGND
AGND
VIN2
相關PDF資料 |
PDF描述 |
|---|---|
| AD7993BRU-1 | 4-Channel, 12-/10-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP |
| AD7997 | 8-Channel, 10- and 12-Bit ADCs with I2CCompatible |
| AD7997BRU-0 | 8-Channel, 10- and 12-Bit ADCs with I2CCompatible |
| AD7997BRU-0REEL | 8-Channel, 10- and 12-Bit ADCs with I2CCompatible |
| AD7997BRU-1 | 8-Channel, 10- and 12-Bit ADCs with I2CCompatible |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7994-0 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP |
| AD7994-1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP |
| AD7994BRU-0 | 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-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: |
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