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参数资料
| 型号： | AD7862ANZ-10 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT DUAL 250KSPS 28DIP |
| 标准包装： | 13 |
| 位数： | 12 |
| 采样率（每秒）： | 250k |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 75mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 28-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 28-PDIP |
| 包装： | 管件 |
| 输入数目和类型： | 4 个单端，双极 |
AD7862
–5–
REV. 0
PIN FUNCTION DESCRIPTION
Pin
Mnemonic
Description
1
NC
No Connect
2
DB11
Data Bit 11 (MSB). Three-state TTL output. Output coding is twos complement for the AD7862-
10 and AD7862-3. Output coding is straight (natural) binary for the AD7862-2.
3–6
DB10–DB7
Data Bit 10 to Data Bit 7. Three-state TTL outputs.
7
DGND
Digital Ground. Ground reference for digital circuitry.
8
CONVST
Convert Start Input. Logic Input. A high to low transition on this input puts both track/holds into
their hold mode and starts conversion on both channels.
9–15
DB6–DB0
Data Bit 6 to Data Bit 0. Three-state TTL outputs.
16
AGND
Analog Ground. Ground reference for mux, track/hold, reference and DAC circuitry.
17
VB2
Input Number 2 of Channel B. Analog Input voltage ranges of
±10 V (AD7862-10), ±2.5 V
(AD7862-3) and 0 V–2.5 V (AD7862-2).
18
VA2
Input Number 2 of Channel A. Analog Input voltage ranges of
±10 V (AD7862-10), ±2.5 V
(AD7862-3) and 0 V–2.5 V (AD7862-2).
19
VREF
Reference Input/Output. This pin is connected to the internal reference through a series resistor and is
the output reference source for the analog-to-digital converter. The nominal reference voltage is 2.5 V,
and this appears at the pin.
20
A0
Multiplexer Select. This input is used in conjunction with RD and CS low to enable the data outputs.
With A0 logic low, one read after a conversion will read the data from each of the ADCs in the sequence,
VA1, VA2, and a subsequent read, when A0 goes high, reads the data from VB1, VB2.
21
CS
Chip Select Input. Active low logic input. The device is selected when this input is active.
22
RD
Read Input. Active low logic input. This input is used in conjunction with A0 and CS low to enable
the data outputs. With A0 logic low, one read after a conversion will read the data from each of the
ADCs in the sequence, VA1, VA2, and a subsequent read, when A0 goes high, reads the data from VB1,
VB2.
23
BUSY
Busy Output. The busy output is triggered high by the falling edge of CONVST and remains high
until conversion is completed.
24
VDD
Analog and Digital Positive Supply Voltage, +5.0 V
± 5%.
25
VA1
Input Number 1 of Channel A. Analog Input voltage ranges of
±10 V (AD7862-10), ±2.5 V
(AD7862-3) and 0 V–2.5 V (AD7862-2).
26
VB1
Input Number 1 of Channel B. Analog Input voltage ranges of
±10 V (AD7862-10), ±2.5 V
(AD7862-3) and 0 V–2.5 V (AD7862-2).
27
AGND
Analog Ground. Ground reference for mux, track/hold, reference and DAC circuitry.
28
NC
No Connect
PIN CONFIGURATION
14
13
12
11
17
16
15
20
19
18
10
9
8
1
2
3
4
7
6
5
TOP VIEW
(Not to Scale)
28
27
26
25
24
23
22
21
AD7862
NC = NO CONNECT
NC
VA1
VB1
AGND
NC
DB11
DB10
DB9
RD
BUSY
VDD
DB8
DB7
DGND
CONVST
DB6
DB5
VREF
A0
CS
DB4
DB3
DB2
DB1
VA2
DB0
AGND
VB2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7862ANZ-3 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7862AR-10 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SOIC 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 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7862AR-10REEL | 制造商:Analog Devices 功能描述:ADC Dual SAR 250ksps 12-bit Parallel 28-Pin SOIC W T/R |
| AD7862AR-2 | 制造商:Analog Devices 功能描述:ADC Dual SAR 250ksps 12-bit Parallel 28-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:DUAL 12-BIT PARALLEL ADC I.C. - Bulk |
| AD7862AR-2REEL | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SOIC 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:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
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