參數(shù)資料
型號： AD7994BRUZ-0
廠商： Analog Devices Inc
文件頁數(shù)： 1/32頁
文件大?。?/td> 0K
描述： IC ADC 12BIT 4CHAN I2C 16TSSOP
標(biāo)準(zhǔn)包裝： 96
位數(shù)： 12
采樣率（每秒）： 188k
數(shù)據(jù)接口： I²C，串行
轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝： 16-TSSOP
包裝： 管件
輸入數(shù)目和類型： 4 個單端，單極
產(chǎn)品目錄頁面： 780 (CN2011-ZH PDF)
4-Channel, 10- and 12-Bit ADCs with I2C-
Compatible Interface in 16-Lead TSSOP
AD7993/AD7994
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 that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
2004 Analog Devices, Inc. All rights reserved.
FEATURES
10- and 12-bit ADC with fast conversion time: 2 s typ
4 single-ended analog input channels
Specified for VDD of 2.7 V to 5.5 V
Low power consumption
Fast throughput rate: 188 kSPS
Temperature range:40°C to +125°C
Sequencer operation
Automatic cycle interval mode
I2C-compatible serial interface
I2C interface supports standard, fast, and high speed modes
Out-of-range indicator/alert function
Pin-selectable addressing via AS
Shutdown mode: 1 A max
16-lead TSSOP package
See AD7998 and AD7992 for 8-channel and 2-channel
equivalent devices, respectively.
GENERAL DESCRIPTION
The AD7993/AD7994 are 4-channel, 10- and 12-bit, low power,
successive approximation ADCs with an I2C-compatible inter-
face. The parts operate from a single 2.7 V to 5.5 V power
supply and feature a 2 s conversion time. The parts contain a
4-channel multiplexer and track-and-hold amplifier that can
handle input frequencies up to 11 MHz.
The AD7993/AD7994 provide a 2-wire serial interface that is
compatible with I2C interfaces. Each part comes in two versions,
AD7993-0/AD7994-0 and AD7993-1/AD7994-1, and each
version allows for at least two different I2C addresses. The I2C
interface on the AD7993-0/AD7994-0 supports standard and
fast I2C interface modes. The I2C interface on the AD7993-1/
AD7994-1 supports standard, fast, and high speed I2C interface
modes.
The AD7993/AD7994 normally remain in a shutdown state
while not converting, and power up only for conversions. The
conversion process can be controlled using the CONVST pin,
by a command mode where conversions occur across I2C write
operations, or an automatic conversion interval mode selected
through software control.
The AD7993/AD7994 require an external reference that should
be applied to the REFIN pin and can be in the range of 1.2 V to
VDD. This allows the widest dynamic input range to the ADC.
FUNCTIONAL BLOCK DIAGRAM
VIN1
10-/12-BIT
SUCCESSIVE
APPROXIMATION
ADC
CONTROL
LOGIC
I/P
MUX
AD7993/AD7994
VDD
SCL
I2C INTERFACE
CYCLE TIMER
REGISTER
ALERT STATUS
REGISTER
CONFIGURATION
REGISTER
CONVERSION
RESULT
REGISTER
SDA
AGND
CONVST
AGND
AS
OSCILLATOR
REFIN
VIN4
DATALOWLIMIT
REGISTER CH1–CH4
T/H
DATAHIGHLIMIT
REGISTER CH1–CH4
HYSTERESIS
REGISTER CH1–CH4
03472-0-001
VIN2
VIN3
ALERT/
BUSY
Figure 1.
On-chip limit registers can be programmed with high and low
limits for the conversion result, and an open-drain, out-of-
range indicator output (ALERT) becomes active when the
programmed high or low limits are violated by the conversion
result. This output can be used as an interrupt.
PRODUCT HIGHLIGHTS
1.
2 s conversion time with low power consumption.
2.
I2C-compatible serial interface with pin-selectable
addresses. Two AD7993/AD7994 versions allow five
AD7993/AD7994 devices to be connected to the same
serial bus.
3.
The parts feature automatic shutdown while not converting
to maximize power efficiency. Current consumption is
1 A max when in shutdown mode.
4.
Reference can be driven up to the power supply.
5.
Out-of-range indicator that can be software disabled or
enabled.
6.
One-shot and automatic conversion rates.
7.
Registers can store minimum and maximum conversion
results.
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參數(shù)描述
AD7994BRUZ-0REEL 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
AD7994BRUZ-1 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)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(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極
AD7994BRUZ-1REEL 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)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(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極
AD7994-X 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
AD7995 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 12-/10-/8-Bit ADC with I2C-Compatible Interface in 8-Lead SOT-23
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