参数资料
型号: AD7993BRU-0
厂商: Analog Devices Inc
文件页数: 8/32页
文件大小: 0K
描述: IC ADC 10BIT 4CH W/I2C 16-TSSOP
标准包装: 96
位数: 10
采样率(每秒): 188k
数据接口: I²C,串行
转换器数目: 1
功率耗散(最大): 2.2mW
电压电源: 单电源
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 管件
输入数目和类型: 4 个单端,单极
AD7993/AD7994
Rev. 0 | Page 16 of 32
TYPICAL CONNECTION DIAGRAM
Figure 22 shows the typical connection diagram for the AD7993/
AD7994. In Figure 22 the address select pin (AS) is tied to VDD;
however, AS can also be tied to AGND or left floating, allowing
the user to select up to five AD7993/AD7994 devices on the
same serial bus. An external reference must be applied to the
AD7993/AD7994. This reference can be in the range of 1.2 V to
VDD. A precision reference like the REF 19x family, AD780,
ADR03, or ADR381 can be used to supply the reference voltage
to the ADC.
SDA and SCL form the 2-wire I2C/SMBus-compatible inter-
face. External pull-up resisters are required for both SDA and
SCL lines.
The AD7993-0/AD7994-0 support standard and fast I2C
interface modes. The AD7993-1/AD7994-1 support standard,
fast, and high speed I2C interface modes. Therefore, if operating
the AD7993/AD7994 in either standard or fast mode, up to five
AD7993/AD7994 devices can be connected to the bus as noted:
3 × AD7993-0/AD7994-0 and 2 × AD7993-1/ AD7994-1
or
3 × AD7993-1/AD7994-1 and 2 × AD7994-0/AD7993-0
In high speed mode, up to three AD7993-1/AD7994-1 devices
can be connected to the bus.
Wake-up from shutdown prior to a conversion is approximately
1 s, and conversion time is approximately 2 s. The AD7993/
AD7994 enter shutdown mode again after each conversion,
which is useful in applications where power consumption is
a concern.
ANALOG INPUT
Figure 21 shows an equivalent circuit of the AD7993/AD7994’s
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. This causes these diodes to become
forward biased and start conducting current into the substrate.
These diodes can conduct a maximum current of 10 mA
without causing irreversible damage to the part.
VIN
D1
VDD
D2
R1
C2
30pF
C1
4pF
CONVERSION PHASE—SWITCH OPEN
TRACK PHASE—SWITCH CLOSED
03472-0-022
Figure 21. Equivalent Analog Input Circuit
Capacitor C1 in Figure 21 is typically about 4 pF and primarily
can be attributed to pin capacitance. Resistor R1 is a lumped
component made up of the on resistance (RON) of a switch
(track-and-hold switch), and also includes the RON of the input
multiplexer. The total resistor is typically about 400 . C2, the
ADC sampling capacitor, has a typical capacitance of 30 pF.
VDD
VIN1
GND
5V SUPPLY
REF 19x
0.1
F
0.1
F
10
F
AD7993/
AD7994
0V to REFIN
INPUT
SDA
C/P
SCL
2-WIRE SERIAL
INTERFACE
CONVST
ALERT
REFIN
RP
VDD
AS
VIN4
03472-0-021
1
F
Figure 22. AD7993/AD7994 Typical Connection Diagram
相关PDF资料
PDF描述
MS27473E8B6SA CONN PLUG 6POS STRAIGHT W/SCKT
LTC1863LCGN#TRPBF IC ADC 12BIT 8CH 175KSPS 16SSOP
LTC2309CF#PBF IC ADC 12BIT SAR 20-TSSOP
MS3106R22-23S CONN PLUG 8POS STRAIGHT W/SCKT
CS5521-ASZR IC ADC 16BIT 2CH 20-SSOP
相关代理商/技术参数
参数描述
AD7993BRU-0REEL 功能描述:IC ADC 10BIT 4CHAN I2C 16TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
AD7993BRU-1 功能描述:IC ADC 10BIT 4CHAN I2C 16TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC(0.295",7.50mm 宽) 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端,单极
AD7993BRU-1REEL 功能描述:IC ADC 10BIT 4CHAN I2C 16TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
AD7993BRUZ-0 功能描述:IC ADC 10BIT 4CH W/I2C 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率(每秒):1M 数据接口:串行,SPI? 转换器数目:1 功率耗散(最大):- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘(4x4) 包装:Digi-Reel® 输入数目和类型:8 个单端,单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6
AD7993BRUZ-0REEL 功能描述:IC ADC 10BIT 4CHAN I2C 16TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494