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參數(shù)資料
| 型號： | AD7651ACP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 16-Bit 100 kSPS PulSAR Unipolar ADC with Reference |
| 中文描述： | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, QCC48 |
| 封裝： | MO-220-VKKD-2, LFCSP-48 |
| 文件頁數(shù)： | 24/28頁 |
| 文件大小： | 709K |
| 代理商： | AD7651ACP |
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AD7651
MICROPROCESSOR INTERFACING
The AD7651 is ideally suited for traditional dc measurement
applications supporting a microprocessor, and for ac signal
processing applications interfacing to a digital signal processor.
The AD7651 is designed to interface either with a parallel 8-bit
or 16-bit wide interface, or with a general-purpose serial port or
I/O ports on a microcontroller. A variety of external buffers can
be used with the AD7651 to prevent digital noise from coupling
into the ADC. The following section discusses the use of an
AD7651 with an ADSP-219x SPI equipped DSP.
SPI Interface (ADSP-219x)
Figure 37
shows an interface diagram between the AD7651 and
the SPI equipped ADSP-219x. To accommodate the slower
speed of the DSP, the AD7651 acts as a slave device and data
must be read after conversion. This mode also allows the daisy-
chain feature. The convert command can be initiated in
response to an internal timer interrupt. The reading process can
be initiated in response to the end-of-conversion signal (BUSY
going LOW) using an interrupt line of the DSP. The serial inter-
face (SPI) on the ADSP-219x is configured for master mode—
Figure 37. Interfacing the AD7651 to an SPI Interfac
(MSTR) = 1, Clock Polarity bit (CPOL) = 0, Clock Phase bit
(CPHA) = 1, and SPI Interrupt Enable (TIMOD) = 00—by
writing to the SPI control register (SPICLTx). To meet all timing
requirements, the SPI clock should be limited to 17 Mbps, which
allows it to read an ADC result in less than 1 μs. When a higher
sampling rate is desired, use of one of the parallel interface
modes is recommended.
AD7651*
ADSP-219x*
SER/PAR
PFx
MISOx
SCKx
PFx or TFSx
BUSY
SDOUT
SCLK
CNVST
EXT/INT
CS
RD
INVSCLK
DVDD
*ADDITIONAL PINS OMITTED FOR CLARITY
SPIxSEL (PFx)
02964-0-021
Rev. 0 | Page 24 of 28
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7651AST | 16-Bit 100 kSPS PulSAR Unipolar ADC with Reference |
| AD7651ASTRL | 16-Bit 100 kSPS PulSAR Unipolar ADC with Reference |
| AD7654 | Dual 2-Channel Simultaneous Sampling SAR 500 kSPS 16-Bit ADC |
| AD7654ACP | Dual 2-Channel Simultaneous Sampling SAR 500 kSPS 16-Bit ADC |
| AD7654ACPRL | Dual 2-Channel Simultaneous Sampling SAR 500 kSPS 16-Bit ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7651ACPRL | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 16-bit Parallel/Serial 48-Pin LFCSP EP T/R |
| AD7651ACPZ | 功能描述:IC ADC 16BIT UNIPOLAR 48LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)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(yīng)商設(shè)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 |
| AD7651ACPZRL | 功能描述:IC ADC 16BIT UNIPOLAR 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)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(yīng)商設(shè)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 |
| AD7651AST | 制造商:Rochester Electronics LLC 功能描述:16-BIT 100KSPS SAR UNIPOLAR ADC W/REEL - Tape and Reel 制造商:Analog Devices 功能描述: 制造商:Analog Devices 功能描述:16BIT SAR ADC REF 7651 LQFP48 |
| AD7651ASTRL | 制造商:Analog Devices 功能描述: |
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