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参数资料
| 型号： | EVAL-AD7322CBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/37页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7322 |
| 标准包装： | 1 |
| 系列： | iCMOS® |
| ADC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 1M |
| 数据接口： | 串行 |
| 输入范围： | ±10 V |
| 在以下条件下的电源（标准）： | 30mW @ 1MSPS |
| 工作温度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7322 |
| 已供物品： | 板，CD |
| 相关产品： | AD7322BRUZ-REEL-ND - IC ADC 12BIT+SAR 2CHAN 14-TSSOP AD7322BRUZ-REEL7-ND - IC ADC 12BIT+ SAR 2CHAN 14TSSOP AD7322BRUZ-ND - IC ADC 12BIT+ SAR 2CHAN 14TSSOP |
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AD7322
Data Sheet
Rev. B | Page 26 of 36
REFERENCE
The AD7322 can operate with either the internal 2.5 V on-chip
reference or an externally applied reference. The internal reference
is selected by setting the Ref bit in the control register to 1. On
power-up, the Ref bit is 0, resulting in the selection of the external
reference for the AD7322 conversion. Suitable reference sources
The internal reference circuitry consists of a 2.5 V band gap
reference and a reference buffer. When operating the AD7322 in
internal reference mode, the 2.5 V internal reference is available
at the REFIN/OUT pin, which should be decoupled to AGND
using a 680 nF capacitor. It is recommended that the internal
reference be buffered before applying it elsewhere in the system.
The internal reference is capable of sourcing up to 90 μA.
On power-up, if the internal reference operation is required for
the ADC conversion, a write to the control register is necessary
to set the Ref bit to 1. During the control register write, the
conversion result from the first initial conversion is invalid. The
reference buffer requires 500 s to power up and charge the 680 nF
decoupling capacitor during the power-up time.
The AD7322 is specified for a 2.5 V to 3 V reference range.
When a 3 V reference is selected, the ranges are ±12 V, ±6 V,
±3 V, and 0 V to +12 V. For these ranges, the VDD and VSS supply
must be equal to or greater than the maximum analog input
range selected (see Table 6).
VDRIVE
the serial interface operates. VDRIVE allows the ADC to easily
interface to both 3 V and 5 V processors. For example, if the
powered from a 3 V supply. This allows the AD7322 to accept
large bipolar input signals with low voltage digital processing.
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| EVAL-AD7323CB | 制造商:AD 制造商全称:Analog Devices 功能描述:500 kSPS, 4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC |
| EVAL-AD7323CBZ | 功能描述:BOARD EVALUATION FOR AD7323CBZ RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:iCMOS® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| EVAL-AD7324CB | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC |
| EVAL-AD7324CBZ | 功能描述:BOARD EVALUATION FOR AD7324CBZ RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:iCMOS® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| EVAL-AD7327CB | 制造商:AD 制造商全称:Analog Devices 功能描述:500 kSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC |
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