- 您现在的位置：买卖IC网 > PDF目录16860 > EVAL-AD7280AEDZ (Analog Devices Inc)BOARD EVAL FOR AD7280 PDF资料下载
参数资料
| 型号： | EVAL-AD7280AEDZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 24/48页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD7280 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电池监控器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | * |
| 主要属性： | * |
| 次要属性： | SPI 接口 |
| 已供物品： | 板 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页当前第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页
AD7280A
POWER-DOWN
V DD
The AD7280A provides two power-down options.
0.1μF
10μF
10k ?
?
?
Full power-down (hardware)
Software power-down
V DD MASTER
V REG
1μF
Full Power-Down (Hardware)
The AD7280A can be placed into full power-down mode, which
requires only 5 μA maximum current, by taking the PD pin low.
The falling edge of the PD pin powers down all analog and
digital circuitry.
The AD7280A includes a digital delay filter on the PD pin,
MUST GO TO 0V
IN HARDWARE
POWER-DOWN
DV CC
AV CC
V DRIVE
AD7280A
V REF
C REF
0.1μF
0.1μF
1μF
0.1μF
which protects against a power-down being initiated by noise
or glitches on the hardware PD pin. A hardware power-down
is not initiated until the PD pin is held low for approximately
130 μs. Similarly, the AD7280A is not taken out of power-down
mode until the PD pin is held high for approximately 130 μs.
The digital delay filter does not apply on initial power-up. The
AUX TERM
AUX6
AUX5
AUX4
AUX3
AUX2
AUX1
V SS
ALERT
SDO
SDI
SCLK
CS
PD
CNVST
DSP/MICRO-
PROCESSOR
power-on request is accepted by the AD7280A approximately
5 μs after the rising edge of PD.
When placing the AD7280A into full power-down mode, AV CC
and DV CC must fall to 0 V and must not be held high by any
external means. AV CC and DV CC can be held high unintention-
V DD
MUST GO TO 0V IN
HARDWARE POWER-DOWN
Figure 37. V DRIVE Powered from V REG
ally if the auxiliary ADC inputs are greater than the forward
0.1μF
10μF
10k ?
bias on the internal ESD protection diodes. For this reason, it
is recommended that the auxiliary ADC inputs return to 0 V
when the part is placed in full power-down mode.
In addition, all digital inputs on the AD7280A master device
must return to 0 V when the part is placed in full power-down
mode (see Figure 37). However, if an external V DRIVE supply is
used—that is, V DRIVE is not connected to V REG —then only the
V DD MASTER V REG
DV CC
AV CC
AD7280A
V DRIVE
1μF
0.1μF
0.1μF
2.7V TO 5.5V SUPPLY
0.1μF 10μF
CNVST line must return low (see Figure 38 ).
When the AD7280A is placed into full power-down mode, the
device must be left in full power-down for a minimum of 2 ms
when the V REG and V REF pins are decoupled with 1 μF capacitors.
This ensures that the charge on the V REG and V REF decoupling
capacitors dissipates sufficiently to allow the internal power-on
reset circuit to activate when powering the AD7280A back up.
This time is measured from the falling edge of the PD pin.
as the AD7280A is powering down with 1 μF decoupling
MUST GO TO 0V
IN HARDWARE
POWER-DOWN
AUX TERM
AUX6
AUX5
AUX4
AUX3
AUX2
AUX1
V SS
V REF
C REF
ALERT
SDO
SDI
SCLK
CS
PD
CNVST
1μF
0.1μF
DSP/MICRO-
PROCESSOR
MUST GO TO 0V IN
HARDWARE POWER-DOWN
capacitors on the pins. Figure 20 shows a similar plot but with
10 μF decoupling capacitors on the V REG and V REF pins.
Rev. 0 | Page 24 of 48
Figure 38. V DRIVE Powered from DSP/Microprocessor
相关PDF资料 |
PDF描述 |
|---|---|
| V110C24C100B3 | CONVERTER MOD DC/DC 24V 100W |
| MLG0603S2N0S | INDUCTOR MULTILAYER 2.0NH 0201 |
| V110C24C100B2 | CONVERTER MOD DC/DC 24V 100W |
| EVAL-ADM1087EB | BOARD EVAL FOR ADM1087 |
| V110B28E150BG2 | CONVERTER MOD DC/DC 28V 150W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-AD7291SDZ | 功能描述:BOARD EVAL FOR AD7291 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 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-AD7292SDZ | 功能描述:数据转换 IC 开发工具 EVALUATION BOARD RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| EVAL-AD7294EBZ | 功能描述:BOARD EVALUATION FOR AD7294 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 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-AD7298SDZ | 功能描述:BOARD EVAL FOR AD7298 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 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-AD7298SDZ | 制造商:Analog Devices 功能描述:EVAL BOARD, AD7192 12BIT ADC |
发布紧急采购，3分钟左右您将得到回复。