參數(shù)資料
型號(hào)： AD7991YRJZ-1RL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 10/28頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12BIT 4CH I2C SOT23-8
產(chǎn)品變化通告： AD7991,5,9 Offset Error Change 17/Sept/2010
設(shè)計(jì)資源： Using AD8599 as an Ultralow Distortion Driver for the AD7991 (CN0043)
標(biāo)準(zhǔn)包裝： 10,000
位數(shù)： 12
采樣率（每秒）： 1M
數(shù)據(jù)接口： I²C，串行
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 4.68mW
電壓電源： 單電源
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： SOT-23-8
供應(yīng)商設(shè)備封裝： SOT-23-8
包裝： 帶卷 (TR)
輸入數(shù)目和類(lèi)型： 4 個(gè)單端，單極
配用： EVAL-AD7991EBZ-ND - BOARD EVAL FOR AD7991
AD7991/AD7995/AD7999
Rev. B | Page 18 of 28
TYPICAL CONNECTION DIAGRAM
Figure 22 shows the typical connection diagram for the
AD7991/AD7995/AD7999.
The reference voltage can be taken from the supply voltage,
VDD. However, the AD7991/AD7995/AD7999 can be configured
to be a 3-channel device with the reference voltage applied to
the VIN3/VREF pin. In this case, a 1 μF decoupling capacitor on
the VIN3/VREF pin is recommended.
SDA and SCL form the 2-wire I2C compatible interface. External
pull-up resistors are required for both the SDA and SCL lines.
The AD7991-0/AD7995-0 and the AD7991-1/AD7995-1/
AD7999-1 support standard, fast, and high speed I2C interface
modes. Both the -0 and -1 devices have independent I2C addresses,
which allows the devices to connect to the same I2C bus without
contention issues.
The part requires approximately 0.6 μs to wake up from power-
down and to acquire the analog input. Once the acquisition
phase ends, the conversion phase starts and takes approximately
1 μs to complete. The AD7991/AD7995/AD7999 enters
shutdown mode after each conversion, which is useful in
applications where power consumption is a concern.
ANALOG INPUT
Figure 21 shows an equivalent circuit of the AD7991/AD7995/
AD7999 analog input structure. The two diodes, D1 and D2,
provide ESD protection for the analog inputs. Care must be taken
to ensure that the analog input signal does not exceed the supply
rails by more than 300 mV. If the signal does exceed this level,
the diodes become forward-biased and start conducting current
into the substrate. Each diode can conduct a maximum current
of 10 mA without causing irreversible damage to the part.
06
461
-02
3
VIN
D1
VDD
D2
R1
C2
30pF
C1
4pF
CONVERSION PHASE—SWITCH OPEN
TRACK PHASE—SWITCH CLOSED
Figure 21. Equivalent Analog Input Circuit
Capacitor C1 in Figure 21 is typically about 4 pF and can
primarily be attributed to pin capacitance. Resistor R1 is a
lumped component composed of the on resistance (RON) of
both a track-and-hold switch and the input multiplexer. The
total resistor is typically about 400 Ω. Capacitor C2, the ADC
sampling capacitor, has a typical capacitance of 30 pF.
VIN0
RP
VDD
5V SUPPLY
10F
0.1F
MICROCONTROLLER/
MICROPROCESSOR
2-WIRE SERIAL
INTERFACE
GND
AD7991/
AD7995/
AD7999
SDA
SCL
06
46
1-
02
4
VIN1
VIN2
VIN3/VREF
+
Figure 22. AD7991/AD7995/AD7999 Typical Connection Diagram
相關(guān)PDF資料
PDF描述
AD7992BRMZ-1REEL IC ADC 12BIT 2CHAN I2C 10MSOP
AD7994BRUZ-1 IC ADC 12BIT 4CHAN I2C 16TSSOP
AD800-52BR IC CLK\DATA RECOVERY PLL 20-SOIC
AD809BR-REEL7 IC SYNTH FREQ 155.52MHZ 16-SOIC
AD8300AR IC DAC 12BIT 3V SRL-IN 8-SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7992 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:2-Channel, 12-Bit ADC with I2C Compatible Interface in 10-Lead MSOP
AD7992_05 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:2-Channel, 12-Bit ADC with I2C-Compatible
AD7992BRM-0 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 10-Pin MSOP
AD7992BRM-0REEL 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 10-Pin MSOP T/R
AD7992BRM-1 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 10-Pin MSOP 制造商:Rochester Electronics LLC 功能描述:2-CHANNEL, 12-BIT ADC WITH 12C ITF I.C. - Bulk
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*