参数资料
| 型号： | AD7725BSZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT PROG 44MQFP |
| 产品变化通告： | AD7725BSZ Discontinuation 16/Mar/2012 |
| 标准包装： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 900k |
| 数据接口： | 串行，并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 30mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-QFP |
| 供应商设备封装： | 44-MQFP（10x10） |
| 包装： | 托盘 |
| 输入数目和类型： | 2 个单端，单极；2 个单端，双极；1 个差分，双极 |
| 配用： | EVAL-AD7725CBZ-ND - BOARD EVALUATION FOR AD7725 |
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REV. A
–12–
AD7725
Pin No.
Mnemonic S/P
Description
38
SDO/DB8
Serial Mode. SDO–Serial Data Output. The serial data is shifted out of the AD7725 MSB
first, in twos complement format, synchronous with SCO.
Parallel Mode. DB8–Data Input/Output Bit.
39
DV
DD
Digital Power Supply Voltage.
40
SCO/DB7
Serial Mode. SCO–Serial Clock Output. The frequency of SCO is a function of the CLKIN
frequency and is set by the SCR pin. When configuration data is being loaded into the
AD7725, SCO = f
CLKIN/16.
Parallel Mode. DB7–Data Input/Output Bit.
41
FSI/DB6
Serial Mode. FSI–Frame Synchronization Input. FSI indicates the beginning of a word
transmission on the SDI pin.
Parallel Mode. DB6–Data Input/Output Bit.
42
INIT/DB5
Serial Mode. INIT–Logic Input. When the device is correctly configured, a logic low on this
pin will prevent the device from converting. When this pin is taken high, the device will start
converting. When daisy-chaining multiple devices, this pin ensures that all devices sample their
analog inputs simultaneously without needing to activate the SYNC pin.
Parallel Mode. DB5–Data Input/Output Bit.
43
RESETCFG/DB4
Serial Mode.
RESETCFG–Logic Input. RESETCFG is used to reset the part when a
configuration error occurs. A low pulse on this pin will reset the part, and the configuration
file will be downloaded again. The
SOE pin will go high following a pulse on the RESETCFG
pin and then again following a successful configuration.
Parallel Mode. DB4–Data Input/Output Bit.
44
DGND/DB3
Serial Mode. DGND–Digital Ground.
Parallel Mode. DB3–Data Input/Output Bit.
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