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參數(shù)資料
| 型號： | AD7667ACPZRL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 19/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT UNIPOLAR 48LFCSP |
| 標準包裝： | 2,500 |
| 系列： | PulSAR® |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 1M |
| 數(shù)據(jù)接口： | 串行，并聯(lián) |
| 轉換器數(shù)目： | 1 |
| 功率耗散（最大）： | 145mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-VFQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 48-LFCSP-VQ（7x7） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 2 個偽差分，單極 |
| 配用： | EVAL-AD7667CBZ-ND - BOARD EVALUATION FOR AD7667 |
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AD7667
Rev. 0 | Page 26 of 28
MICROPROCESSOR INTERFACING
The AD7667 is ideally suited for traditional dc measurement
applications supporting a microprocessor, and for ac signal
processing applications interfacing to a digital signal processor.
The AD7667 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 AD7667 to prevent digital noise from coupling
into the ADC. The following section discusses the use of an
AD7667 with an ADSP-219x SPI equipped DSP.
SPI Interface (ADSP-219x)
Figure 44 shows an interface diagram between the AD7667 and
the SPI equipped ADSP-219x. To accommodate the slower
speed of the DSP, the AD7667 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—
(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 s. When a
higher sampling rate is desired, use of one of the parallel
interface modes is recommended.
AD7667*
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)
03035-0-037
Figure 44. Interfacing the AD7667 to an SPI Interface
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD7667AST | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 16-bit Parallel/Serial 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:1MSPS, 16-BIT ADC INT REF, 2.5LSB - Tape and Reel 制造商:Analog Devices 功能描述:16BIT ADC INT REF 7667 LQFP48 |
| AD7667ASTRL | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 16-bit Parallel/Serial 48-Pin LQFP T/R |
| AD7667ASTZ | 功能描述:IC ADC 16BIT UNIPOLAR 48-LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:PulSAR® 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 |
| AD7667ASTZ | 制造商:Analog Devices 功能描述:16BIT ADC INT REF 7667 LQFP48 |
| AD7667ASTZRL | 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)轉換器 系列:PulSAR® 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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