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參數(shù)資料
| 型號： | AD7862AR-2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| 中文描述： | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 414K |
| 代理商： | AD7862AR-2 |
AD7862
–5–
REV. 0
PIN FUNCTION DESCRIPTION
Pin
Mnemonic
Description
1
2
NC
DB11
No Connect
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.
Data Bit 10 to Data Bit 7. Three-state TTL outputs.
Digital Ground. Ground reference for digital circuitry.
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.
Data Bit 6 to Data Bit 0. Three-state TTL outputs.
Analog Ground. Ground reference for mux, track/hold, reference and DAC circuitry.
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).
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).
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 2.5V,
and this appears at the pin.
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,
V
A1
,
V
A2
, and a subsequent read, when A0 goes high, reads the data from V
B1
,
V
B2
.
Chip Select Input. Active low logic input. The device is selected when this input is active.
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, V
A1
, V
A2
, and a subsequent read, when A0 goes high, reads the data from V
B1,
V
B2
.
Busy Output. The busy output is triggered high by the falling edge of
CONVST
and remains high
until conversion is completed.
Analog and Digital Positive Supply Voltage, +5.0 V
±
5%.
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).
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).
Analog Ground. Ground reference for mux, track/hold, reference and DAC circuitry.
No Connect
3–6
7
8
DB10–DB7
DGND
CONVST
9–15
16
17
DB6–DB0
AGND
V
B2
18
V
A2
19
VREF
20
A0
21
22
CS
RD
23
BUSY
24
25
VDD
V
A1
26
V
B1
27
28
AGND
NC
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
V
A1
V
B1
AGND
NC
DB11
DB10
DB9
RD
BUSY
V
DD
DB8
DB7
DGND
CONVST
DB6
DB5
V
REF
A0
CS
DB4
DB3
DB2
DB1
V
A2
DB0
AGND
V
B2
相關PDF資料 |
PDF描述 |
|---|---|
| AD7862SQ-10 | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| AD7862AR-3 | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| AD7862ARS-10 | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| AD7862ARS-2 | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| AD7862ARS-3 | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD7862AR-2REEL | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7862AR-3 | 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 制造商:Analog Devices 功能描述:IC DUAL 12-BIT ADC ((NS)) |
| AD7862AR-3REEL | 制造商:Analog Devices 功能描述:ADC Dual SAR 250ksps 12-bit Parallel 28-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:DUAL 12-BIT PARALLEL ADC I.C. - Tape and Reel |
| AD7862ARS-10 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD7862ARS-10REEL | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
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