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參數(shù)資料
| 型號(hào)： | EVAL-AD7938CBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 2/36頁 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR AD7938 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 1.5M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 輸入范圍： | ±VREF |
| 在以下條件下的電源（標(biāo)準(zhǔn)）： | 13.5mW @ 5V |
| 工作溫度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7938 |
| 已供物品： | 板，CD |
| 相關(guān)產(chǎn)品： | AD7938BSUZ-6REEL7DKR-ND - IC ADC 12BIT 8CHAN 32TQFP AD7938BSUZ-6REEL7CT-ND - IC ADC 12BIT 8CHAN 32TQFP AD7938BCPZ-6-ND - IC ADC 12BIT 8CH 625KSPS 32LFCSP AD7938BSUZ-ND - IC ADC 12BIT 8CHAN 32TQFP AD7938BSUZ-6-ND - IC ADC 12BIT 8CHAN 32TQFP AD7938BCPZ-ND - IC ADC 12BIT 8CH 1.5MSPS 32LFCSP AD7938BCPZ-REEL7-ND - IC ADC 12BIT 8CH 1.5MSPS 32LFCSP AD7938BCPZ-6REEL7-ND - IC ADC 12BIT 8CH 625KSPS 32LFCSP AD7938BSUZ-6REEL7TR-ND - IC ADC 12BIT 8CHAN 32TQFP AD7938BSUZ-REEL7-ND - IC ADC 12BIT 8CHAN 32TQFP |
| 其它名稱： | Q3627458 |
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AD7938/AD7939
Data Sheet
Rev. C | Page 10 of 36
Pin No.
Mnemonic
Description
21
AGND
Analog Ground. This is the ground reference point for all analog circuitry on the AD7938/AD7939. All analog input
signals and any external reference signal should be referred to this AGND voltage. The AGND and DGND voltages
should ideally be at the same potential and must not be more than 0.3 V apart, even on a transient basis.
22
VREFIN/VREFOUT
Reference Input/Output. This pin is connected to the internal reference and is the reference source for the ADC.
The nominal internal reference voltage is 2.5 V, which appears at this pin. It is recommended that this pin is
decoupled to AGND with a 470 nF capacitor. This pin can be overdriven by an external reference. The input voltage
range for the external reference is 0.1 V to VDD; however, care must be taken to ensure that the analog input range
23 to
30
VIN0 to VIN7
Analog Input 0 to Analog Input 7. Eight analog input channels that are multiplexed into the on-chip track-and-
hold. The analog inputs can be programmed to be eight single-ended inputs, four fully differential pairs, four
pseudo differential pairs, or seven pseudo differential inputs by setting the MODE bits in the control register
appropriately (see Table 10). The analog input channel to be converted can either be selected by writing to the
address bits (ADD2 to ADD0) in the control register prior to the conversion or the on-chip sequencer can be used.
The SEQ and SHDW bits in conjunction with the address bits in the control register allow the shadow register to be
programmed. The input range for all input channels can either be 0 V to VREF or 0 V to 2 × VREF, and the coding can
be binary or twos complement, depending on the states of the RANGE and CODING bits in the control register.
Any unused input channels should be connected to AGND to avoid noise pickup.
31
VDD
Power Supply Input. The VDD range for the AD7938/AD7939 is 2.7 V to 5.25 V. The supply should be decoupled to
AGND with a 0.1 F capacitor and a 10 F tantalum capacitor.
32
W/B
Word/Byte Input. When this input is logic high, data is transferred to and from the AD7938/AD7939 in 12-bit/10-bit
words on the DB0/DB2 to DB11 pins. When this pin is logic low, byte transfer mode is enabled. Data and the
channel ID are transferred on Pin DB0 to Pin DB7, and Pin DB8/HBEN assumes its HBEN functionality. Unused data
lines when operating in byte transfer mode should be tied off to DGND.
EPAD
Exposed Pad. The exposed pad is located on the underside of the package. Connect the EPAD to the ground plane
of the PCB using multiple vias.
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| EVAL-AD7939CB | 制造商:Analog Devices 功能描述:EVALUATION CONTROL BOARD I.C. - Bulk |
| EVAL-AD7939CBZ | 功能描述:BOARD EVALUATION FOR AD7939CBZ RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| EVAL-AD7940CB | 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 |
| EVAL-AD7940CBZ | 功能描述:BOARD EVALUATION AD7940 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| EVAL-AD7942CB | 功能描述:BOARD EVALUATION FOR AD7942 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:PulSAR® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
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