參數(shù)資料
型號： AD9233-125EBZ
廠商： Analog Devices Inc
文件頁數(shù)： 14/44頁
文件大?。?/td> 0K
描述： BOARD EVALUATION FOR AD9233
標準包裝： 1
ADC 的數(shù)量： 1
位數(shù)： 12
采樣率（每秒）： 125M
數(shù)據(jù)接口： 串行
輸入范圍： 1 ~ 2 Vpp
在以下條件下的電源（標準）： 455mW @125MSPS
工作溫度： -40°C ~ 85°C
已用 IC / 零件： AD9233
已供物品： 板，電源
相關產(chǎn)品： AD9233BCPZRL7-125-ND - IC ADC 12BIT 125MSPS 48-LFCSP
AD9233BCPZRL7-105-ND - IC ADC 12BIT 105MSPS 48-LFCSP
AD9233BCPZ-105-ND - IC ADC 12BIT 105MSPS 48-LFCSP
AD9233BCPZ-125-ND - IC ADC 12BIT 80/105/125 48-LFCSP
AD9233BCPZ-80-ND - IC ADC 12BIT 80MSPS 48-LFCSP
AD9233
Rev. A | Page 21 of 44
Power-Down Mode
By asserting the PDWN pin high, the AD9233 is placed in
power-down mode. In this state, the ADC typically dissipates
1.8 mW. During power-down, the output drivers are placed in a
high impedance state. Reasserting the PDWN pin low returns
the AD9233 to its normal operational mode. This pin is both
1.8 V and 3.3 V tolerant.
Low power dissipation in power-down mode is achieved by
shutting down the reference, reference buffer, biasing networks,
and clock. The decoupling capacitors on REFT and REFB are
discharged when entering power-down mode and then must be
recharged when returning to normal operation. As a result, the
wake-up time is related to the time spent in power-down mode;
shorter power-down cycles result in proportionally shorter
wake-up times. With the recommended 0.1 μF decoupling
capacitor on REFT and REFB, it takes approximately 0.25 ms
to fully discharge the reference buffer decoupling capacitor and
0.35 ms to restore full operation.
Standby Mode
When using the SPI port interface, the user can place the ADC
in power-down or standby modes. Standby mode allows the
user to keep the internal reference circuitry powered when
faster wake-up times are required. See the Memory Map
section for more details.
DIGITAL OUTPUTS
The AD9233 output drivers can be configured to interface with
1.8 V to 3.3 V logic families by matching DRVDD to the digital
supply of the interfaced logic. The output drivers are sized to
provide sufficient output current to drive a wide variety of logic
families. However, large drive currents tend to cause current
glitches on the supplies that can affect converter performance.
Applications requiring the ADC to drive large capacitive loads
or large fanouts can require external buffers or latches.
The output data format can be selected for either offset binary
or twos complement by setting the SCLK/DFS pin when
operating in the external pin mode (see Table 10). As detailed in
data format can be selected for either offset binary, twos
complement, or Gray code when using the SPI control.
Out-of-Range (OR) Condition
An out-of-range condition exists when the analog input voltage
is beyond the input range of the ADC. OR is a digital output
that is updated along with the data output corresponding to the
particular sampled input voltage. Thus, OR has the same pipeline
latency as the digital data.
05
49
2-
0
41
1
0
1
OR DATA OUTPUTS
OR
+FS – 1 LSB
+FS – 1/2 LSB
+FS
–FS
–FS + 1/2 LSB
–FS – 1/2 LSB
1111
1110
0000
0001
0000
Figure 55. OR Relation to Input Voltage and Output Data
OR is low when the analog input voltage is within the analog
input range and high when the analog input voltage exceeds the
input range, as shown in Figure 55. OR remains high until the
analog input returns to within the input range and another
conversion is completed. By logically AND’ing the OR bit with
the MSB and its complement, overrange high or underrange
low conditions can be detected. Table 11 is a truth table for the
overrange/underrange circuit in Figure 56, which uses NAND
gates.
MSB
OR
MSB
OVER = 1
UNDER = 1
05
49
2-
0
4
5
Figure 56. Overrange/Underrange Logic
Table 11. Overrange/Underrange Truth Table
OR
MSB
Analog Input Is:
0
Within Range
0
1
Within Range
1
0
Underrange
1
Overrange
Digital Output Enable Function (OEB)
The AD9233 has three-state ability. If the OEB pin is low, the
output data drivers are enabled. If the OEB pin is high, the output
data drivers are placed in a high impedance state. This is not
intended for rapid access to the data bus. Note that OEB is
referenced to the digital supplies (DRVDD) and should not
exceed that supply voltage.
Table 12. Output Data Format
Condition (V)
Binary Output Mode
Twos Complement Mode
Gray Code Mode (SPI Accessible)
OR
VIN+ VIN < –VREF – 0.5 LSB
0000 0000 0000
1000 0000 0000
1100 0000 0000
1
VIN+ VIN = –VREF
0000 0000 0000
1000 0000 0000
1100 0000 0000
0
VIN+ VIN = 0
1000 0000 0000
0000 0000 0000
0
VIN+ VIN = +VREF – 1.0 LSB
1111 1111 1111
0111 1111 1111
1000 0000 0000
0
VIN+ VIN > +VREF – 0.5 LSB
1111 1111 1111
0111 1111 1111
1000 0000 0000
1
相關PDF資料
PDF描述
LGU2D681MELB CAP ALUM 680UF 200V 20% SNAP
GCM22DRUN CONN EDGECARD 44POS DIP .156 SLD
AD9204-20EBZ BOARD EVALUATION 20MSPS AD9204
GCM22DRUH CONN EDGECARD 44POS DIP .156 SLD
AD9204-40EBZ BOARD EVALUATION 40MSPS AD9204
相關代理商/技術參數(shù)
參數(shù)描述
AD9233-80EB 制造商:Analog Devices 功能描述:
AD9233-80EBZ 功能描述:BOARD EVAL FOR AD9233 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉換器 (ADC) 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
AD9233BCPZ-105 功能描述:IC ADC 12BIT 105MSPS 48-LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:2 功率耗散（最大）:155mW 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-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD9233BCPZ-125 功能描述:IC ADC 12BIT 80/105/125 48-LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
AD9233BCPZ-80 功能描述:IC ADC 12BIT 80MSPS 48-LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:2 功率耗散（最大）:155mW 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-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*