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參數(shù)資料
| 型號： | AD7851ARSZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 26/36頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT SRL 333KSPS 24SSOP |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 333k |
| 數(shù)據(jù)接口： | 8051，QSPI?，串行，SPI? µP |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 功率耗散（最大）： | 89.25mW |
| 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： | 24-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個(gè)偽差分，單極；1 個(gè)偽差分，雙極 |
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AD7851
–32–
REV. B
AD7851 to ADSP-21xx Interface
Figure 47 shows the AD7851 interface to the ADSP-21xx. The
ADSP-21xx is the slave and the AD7851 is the master. The
AD7851 is in Interface Mode 5. For the ADSP-21xx, the bits in
the serial port control register should be set up as TFSR = RFSR
= 1 (need a frame sync for every transfer), SLEN = 15 (16-bit
word length), TFSW = RFSW = 1 (alternate framing mode for
transmit and receive operations), INVRFS = INVTFS = 1 (active
low RFS and TFS), IRFS = ITFS = 0 (external RFS and TFS),
and ISCLK = 0 (external serial clock). The CLKIN and
CONVST signals could be supplied from the ADSP-21xx or
from an external source. The AD7851 supplies the SCLK and
the
SYNC signals to the ADSP-21xx and the reading and writing
takes place during conversion. The BUSY signal only indicates
when the conversion is finished and may not be required. The
data access and hold times of the ADSP-21xx and the AD7851
allow for a CLKIN of 7 MHz/6 MHz with a 5 V supply.
AD7851
CONVST
CLKIN
SCLK
DOUT
BUSY
SM1
SM2
POLARITY
OPTIONAL
7MHz/6MHz
SYNC
RFS
DIN AT DGND FOR
NO WRITING TO PART
SLAVE
MASTER
OPTIONAL
DIN
DVDD
OPTIONAL
IRQ
DT
TFS
ADSP-21xx
DR
SCK
Figure 47. ADSP-21xx Interface
AD7851 to DSP56000/1/2/L002 Interface
Figure 48 shows the AD7851 to DSP56000/1/2/L002 interface.
Here the DSP5600x is the master and the AD7851 is the slave.
The AD7851 is in Interface Mode 3. The setting of the bits in
the registers of the DSP5600x would be for synchronous opera-
tion (SYN = 1), internal frame sync (SCD2 = 1), internal clock
(SCKD = 1), 16-bit word length (WL1 = 1, WL0 = 0), frames
sync only active at beginning of the transfer (FSL1 = 0, FSL0 =
1). A gated clock can be used (GCK = 1) or if the SCLK is to
be tied to the CLKIN of the AD7851, then there must be a con-
tinuous clock (GCK = 0). Again the data access and hold times
of the DSP5600x and the AD7851 should allow for an SCLK of
7 MHz/6 MHz.
AD7851
CONVST
CLKIN
SCLK
DOUT
BUSY
SM1
SM2
POLARITY
OPTIONAL
7MHz/6MHz
SYNC
DIN AT DGND FOR
NO WRITING TO PART
SLAVE
OPTIONAL
DIN
DVDD
OPTIONAL
DSP
56000/1/2/L002
SRD
SCK
SC2
MASTER
STD
IRQ
Figure 48. DSP56000/1/2/L002 Interface
AD7851 to TMS320C20/25/5x/LC5x Interface
Figure 49 shows the AD7851 to the TMS320Cxx interface. The
AD7851 is the master and operates in Interface Mode 5. For the
TMS320Cxx, the CLKX, CLKR, FSX, and FSR pins should all
be configured as inputs. The CLKX and the CLKR should be
connected together as should the FSX and FSR. Because the
AD7851 is the master and the reading and writing occurs during
the conversion, the BUSY only indicates when the conversion is
finished and thus may not be required. Again the data access and
hold times of the TMS320Cxx and the AD7851 allow for a
CLKIN of 7 MHz/6 MHz.
AD7851
CONVST
CLKIN
SCLK
DOUT
BUSY
SM1
SM2
POLARITY
OPTIONAL
7MHz/6MHz
SYNC
DIN AT DGND FOR
NO WRITING TO PART
SLAVE
MASTER
OPTIONAL
DIN
DVDD
OPTIONAL
DT
FSX
INT0
TMS320C20/
25/5x/LC5x
DR
CLKR
FSR
CLKX
Figure 49. TMS320C20/25/5x Interface
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| AD7851ARZ | 功能描述:IC ADC 14BIT SRL 333KSPS 24-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 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(gè)單端，單極；1 個(gè)單端，雙極 |
| AD7851ARZ3 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit 333 kSPS Serial A/D Converter |
| AD7851ARZ-REEL | 功能描述:IC ADC 14BIT SRL 333KSPS 24-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 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(gè)單端，單極；1 個(gè)單端，雙極 |
| AD7851ARZ-REEL3 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit 333 kSPS Serial A/D Converter |
| AD7851KN | 功能描述:IC ADC 14BIT SRL 333KSPS 24-DIP 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(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 |
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