參數(shù)資料
型號(hào)： AD7623
廠商： Analog Devices, Inc.
英文描述： 16-Bit, 750 kSPS, Unipolar/Bipolar Programmable Input PulSAR ADC
中文描述： 16位，750 kSPS的，單極/雙極可編程輸入PulSAR系列ADC的
文件頁數(shù)： 30/32頁
文件大?。?/td> 587K
代理商： AD7623
AD7612
Rev. 0 | Page 30 of 32
SCIN
SCCLK
WARP
START
TEN
1
2
3
6
7
BUSY
HW/SW = 0
INVSCLK = 0
PD = 0
CNVST
SCCS
t
8
t
36
t
35
t
37
4
PD
5
BIPOLAR
IMPULSE
OB/2C
X
8
9
SER/PAR = 1
BIP = 0 OR 1
TEN = 0 OR 1
IMPULSE = 0 OR 1
WARP = 0 OR 1
t
33
t
34
t
31
X
t
31
0
Figure 45. Serial Configuration Port Timing
MICROPROCESSOR INTERFACING
The AD7612 is ideally suited for traditional dc measurement
applications supporting a microprocessor, and ac signal processing
applications interfacing to a digital signal processor. The AD7612
is designed to interface 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 AD7612 to prevent digital noise from coupling into the ADC.
SPI Interface
The AD7612 is compatible with SPI and QSPI digital hosts and
DSPs such as Blackfin ADSP-BF53x and ADSP-218x/ADSP-219x.
Figure 46 shows an interface diagram between the AD7612 and
the SPI-equipped ADSP-219x. To accommodate the slower speed
of the DSP, the AD7612 acts as a slave device, and data must be
read after conversion. This mode also allows the daisy-chain
feature. The convert command could 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 peripheral interface (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) = 0 by writing to the SPI control register (SPICLTx).
It should be noted that to meet all timing requirements, the SPI
clock should be limited to 17 Mbps allowing it to read an ADC
result in less than 1 μs. When a higher sampling rate is desired,
use one of the parallel interface modes.
BUSY
CS
SDOUT
SCLK
CNVST
AD7612
1
PFx
SPIxSEL (PFx)
MISOx
SCKx
PFx OR TFSx
ADSP-219x
1
1
ADDITIONAL PINS OMITTED FOR CLARITY.
DVDD
SER/PAR
EXT/INT
RD
INVSCLK
0
Figure 46. Interfacing the AD7612 to SPI Interface
相關(guān)PDF資料
PDF描述
AD7643 16-Bit, 750 kSPS, Unipolar/Bipolar Programmable Input PulSAR ADC
AD7656 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7656BSTZ 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7656BSTZ-REEL 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7657 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7623ACP 制造商:Analog Devices 功能描述:ADC Single SAR 1.33Msps 16-bit Parallel/Serial 48-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:16-BIT, 2LSB, 1.33MSPS ADC - Bulk
AD7623ACPRL 制造商:Analog Devices 功能描述:ADC Single SAR 1.33Msps 16-bit Parallel/Serial 48-Pin LFCSP EP T/R
AD7623ACPZ 功能描述:IC ADC 16BIT 1.33MSPS 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 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(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極
AD7623ACPZRL 功能描述:IC ADC 16BIT 1.33MSPS 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 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(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極
AD7623AST 制造商:Analog Devices 功能描述:ADC Single SAR 1.33Msps 16-bit Parallel/Serial 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:16-BIT, 2LSB, 1.33MSPS ADC - Bulk
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