- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9502 > AD974BRSZ (Analog Devices Inc)IC DAS 16BIT 4CH 200KSPS 28-SSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD974BRSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 18/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAS 16BIT 4CH 200KSPS 28-SSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS） |
| 分辨率（位）： | 16 b |
| 采樣率（每秒）： | 200k |
| 數(shù)據(jù)接口： | 串行 |
| 電壓電源： | 模擬和數(shù)字 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 776 (CN2011-ZH PDF) |
| 配用： | EVAL-AD974CB-ND - BOARD EVAL FOR AD974 |
REV. A
AD974
–7–
CONVERSION CONTROL
The AD974 is controlled by two signals: R/
C and CS. When
R/
C is brought low, with CS low, for a minimum of 50 ns, the
input signal will be held on the internal capacitor array and a
conversion “n” will begin. Once the conversion process does
begin, the
BUSY signal will go low until the conversion is com-
plete. Internally, the signals R/
C and CS are ORed together and
there is no requirement on which signal is taken low first when
initiating a conversion. The only requirement is that there be at
least 10 ns of delay between the two signals being taken low.
After the conversion is complete, the
BUSY signal will return
high and the AD974 will again resume tracking the input signal.
Under certain conditions the
CS pin can be tied Low and R/C
will be used to determine whether you are initiating a conver-
sion or reading data. On the first conversion, after the AD974 is
powered up, the DATA output will be indeterminate.
Conversion results can be clocked serially, using either an
internal clock generated by the AD974 or an external clock.
The AD974 is configured for the internal data clock mode by
pulling the EXT/
INT pin low. It is configured for the external
clock mode by pulling the EXT/
INT pin high.
INTERNAL DATA CLOCK MODE
The AD974 is configured to generate and provide the data clock
when the EXT/
INT pin is held low. Typically CS will be tied
low and R/
C will be used to initiate a conversion “n.” During
the conversion the AD974 will output 16 bits of data, MSB first,
from conversion “n-1” on the DATA pin. This data will be
synchronized with 16 clock pulses provided on the DATACLK
pin. The output data will be valid on both the rising and falling
edge of the data clock as shown in Figure 3. After the LSB has
been presented, the DATACLK pin will stay low until another
conversion is initiated.
In this mode, the digital input/output pins’ transitions are suit-
ably positioned to minimize degradation on the conversion
result, mainly during the second half of the conversion process.
EXTERNAL DATA CLOCK MODE
The AD974 is configured to accept an externally supplied data
clock when the EXT/
INT pin is held high. This mode of opera-
tion provides several methods by which conversion results can
be read. The output data from conversion “n-1” can be read
during conversion “n,” or the output data from conversion “n”
CS, R/C
BUSY
MODE
ACQUIRE
CONVERT
t1
CONVERT
ACQUIRE
t3
t2
t5
t6
t4
t7
t23
t25
t24
A0, A1
WR1, WR2
Figure 2. Basic Conversion Timing
R/
C
DATACLK
DATA
BUSY
1
MSB
VALID
BIT 14
VALID
t8
t1
t9
2
3
15
16
t10
t11
BIT 13
VALID
BIT 1
VALID
LSB
VALID
t2
t6
Figure 3. Serial Data Timing for Reading Previous Conversion Results with Internal Clock
(
CS and EXT/ INT Set to Logic Low)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| V110A24M300BF2 | CONVERTER MOD DC/DC 24V 300W |
| AD974ANZ | IC DAS 16BIT 4CH 200KSPS 28DIP |
| VI-B4R-MY-S | CONVERTER MOD DC/DC 7.5V 50W |
| VE-B31-IU | CONVERTER MOD DC/DC 12V 200W |
| VI-B3X-IU | CONVERTER MOD DC/DC 5.2V 200W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD974BRZ | 功能描述:IC DAS 16BIT 4CH 200KSPS 28SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Basics 標(biāo)準(zhǔn)包裝:1 系列:- 類型:電機(jī)控制 分辨率（位）:12 b 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，并聯(lián) 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應(yīng)商設(shè)備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
| AD9750 | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 125 MSPS High Performance TxDAC D/A Converter |
| AD9750AR | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W 制造商:Analog Devices 功能描述:DAC SGL 10-BIT 28SOIC - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:10 BIT 12500 MSPS+ TXDAC D/A CONVERTER - Bulk 制造商:Analog Devices 功能描述:0BIT DAC POLY FUSE 9750 SOIC28 |
| AD9750ARRL | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:10 BIT 125 MSPS+ TXDAC D/A CONVERTER - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。