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參數(shù)資料
| 型號： | AD7946BRMZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 14BIT 500KSPS SAR 10-MSOP |
| 標準包裝： | 50 |
| 系列： | PulSAR® |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 500k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉換器數(shù)目： | 1 |
| 功率耗散（最大）： | 19mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個偽差分，單極 |
| 產品目錄頁面： | 780 (CN2011-ZH PDF) |
| 配用： | EVAL-AD7946CBZ-ND - BOARD EVALUATION FOR AD7946 |
AD7946
Rev. A | Page 16 of 24
AD7946
REF
GND
VDD
IN–
IN+
VIO
SDI
SCK
SDO
CNV
100nF
10F
ADR364
33
2.7nF
0V TO 4.096V
ADA4841
100nF
>5.2V
100nF
04
65
6
-05
2
Figure 32. Example of a Single-Supply Application Circuit
DIGITAL INTERFACE
Although the AD7946 has a reduced number of pins, it offers
flexibility in its serial interface modes.
The AD7946, when in CS mode, is compatible with SPI, QSPI,
digital hosts, and DSPs, for example, Blackfin ADSP-BF53x or
ADSP-219x. This interface can use either 3-wire or 4-wire. A
3-wire interface using the CNV, SCK, and SDO signals mini-
mizes wiring connections useful, for instance, in isolated
applications. A 4-wire interface using the SDI, CNV, SCK, and
SDO signals allows CNV, which initiates the conversions, to be
independent of the readback timing (SDI). This is useful in low
jitter sampling or simultaneous sampling applications.
The AD7946, when in chain mode, provides a daisy chain
feature using the SDI input for cascading multiple ADCs on a
single data line similar to a shift register.
The operating mode depends on the SDI level when the CNV
rising edge occurs. CS mode is selected if SDI is high, and chain
mode is selected if SDI is low. The SDI hold time is such that
when SDI and CNV are connected, the chain mode is always
selected.
In either mode, the AD7946 offers the flexibility to optionally
force a start bit in front of the data bits. This start bit can be
used as a BUSY signal indicator to interrupt the digital host and
trigger the data reading. Otherwise, without a BUSY indicator,
the user must time out the maximum conversion time prior to
readback.
BUSY indicator feature is enabled
In CS mode, if CNV or SDI is low when the ADC
In chain mode, if SCK is high during the CNV rising edge
(see Figure 44).
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| AD7946BRMZRL7 | 功能描述:IC ADC 14BIT 500KSPS 10-MSOP 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 |
| AD7947 | 制造商:AD 制造商全稱:Analog Devices 功能描述:3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23 |
| AD7947BCP | 制造商:Analog Devices 功能描述:ADC SGL SAR 500KSPS 14BIT SERL 10LFCSP - Bulk |
| AD7948 | 制造商:AD 制造商全稱:Analog Devices 功能描述:+3.3 V/+5 V Multiplying 12-Bit DACs |
| AD7948AN-B | 制造商:Rochester Electronics LLC 功能描述:BYTE 12-B IOUT DAC IC - Bulk 制造商:Analog Devices 功能描述: |
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