参数资料
| 型号： | ADM1063ASUZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/32页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR/SEQUENCER 48-TQFP |
| 标准包装： | 1 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 10 |
| 输出： | 可编程 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TQFP |
| 供应商设备封装： | 48-TQFP（7x7） |
| 包装： | 托盘 |
| 配用： | EVAL-ADM1063TQEBZ-ND - BOARD EVALUATION FOR ADM1063TQ |
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ADM1063
VOLTAGE READBACK
The ADM1063 has an on-board, 12-bit, accurate ADC for
voltage readback over the SMBus. The ADC has a 13-channel
analog mux on the front end. The 13 channels consist of the
Table 9. ADC Input Voltage Ranges
SFD Input
Range (V) Attenuation Factor
ADC Input Voltage
Range (V)
10 SFD inputs (VH, VPx, and VXx), plus three channels for
0.573 to 1.375
1
0 to 2.048
The upper limit is the absolute maximum allowed voltage on the VPx and
section). Any or all of these inputs can be selected to be read,
in turn, by the ADC. The circuit controlling this operation is
called the round-robin circuit. This circuit can be selected to
run through its loop of conversions once or continuously.
Averaging is also provided for each channel. In this case, the
round-robin circuit runs through its loop of conversions 16 times
before returning a result for each channel. At the end of this
cycle, the results are written to the output registers.
The ADC samples single-sided inputs with respect to the AGND
pin. A 0 V input gives out Code 0, and an input equal to the
voltage on REFIN gives out full code (4095 decimal).
The inputs to the ADC come directly from the VXx pins and
from the back of the input attenuators on the VPx and VH pins,
1.25 to 3.00 2.181 0 to 4.46
2.5 to 6.0 4.363 0 to 6.0 1
6.0 to 14.4 10.472 0 to 14.4 1
1
VH pins.
The typical way to supply the reference to the ADC on the
REFIN pin is to connect the REFOUT pin to the REFIN pin.
REFOUT provides a 2.048 V reference. As such, the supervising
range covers less than half the normal ADC range. It is possible,
however, to provide the ADC with a more accurate external
reference for improved readback accuracy.
Supplies can also be connected to the input pins purely for ADC
readback, even though these pins may go above the expected
supervisory range limits (but not above the absolute maximum
ratings on these pins). For example, a 1.5 V supply connected to
VXx
NO ATTENUATION
12-BIT
ADC
DIGITIZED
VOLTAGE
READING
the VX1 pin can be correctly read out as an ADC code of approxi-
mately 3/4 full scale, but it always sits above any supervisory limits
that can be set on that pin. The maximum setting for the REFIN
pin is 2.048 V.
2.048V VREF
Figure 27. ADC Reading on VXx Pins
SUPPLY SUPERVISION WITH THE ADC
In addition to the readback capability, another level of supervi-
sion is provided by the on-chip, 12-bit ADC. The ADM1063 has
VPx/VH
ATTENUATION NETWORK
(DEPENDS ON RANGE SELECTED)
DIGITIZED
VOLTAGE
READING
limit registers with which the user can program a maximum or
minimum allowable threshold. Exceeding the threshold generates
a warning that can either be read back from the status registers
12-BIT
ADC
2.048V VREF
Figure 28. ADC Reading on VPx/VH Pins
The voltage at the input pin can be derived from the
following equation:
ADC Code
V = × Attenuation Factor × V REFIN
4095
where V REFIN = 2.048 V when the internal reference is used (that is,
the REFIN pin is connected to the REFOUT pin).
The ADC input voltage ranges for the SFD input ranges are listed
or input into the SE to determine what sequencing action the
ADM1063 should take. Only one register is provided for each input
channel. Therefore, either an undervoltage threshold or overvoltage
threshold (but not both) can be set for a given channel. The round-
robin circuit can be enabled via an SMBus write, or it can be
programmed to turn on in any state in the SE program. For
example, it can be set to start after a power-up sequence is
complete, and all supplies are known to be within expected
tolerance limits.
Note that a latency is built into this supervision, dictated by
the conversion time of the ADC. With all 12 channels selected,
the total time for the round-robin operation (averaging off) is
approximately 6 ms (500 μs per channel selected). Supervision
using the ADC, therefore, does not provide the same real-time
response as the SFDs.
Rev. C | Page 20 of 32
相关PDF资料 |
PDF描述 |
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| ADM1064ACPZ | IC SEQUENCER/SUPERVISOR 40-LFCSP |
| ADM1065ASUZ | IC SEQUENCER/MONITOR 48-TQFP |
| ADM1066ASUZ-REEL7 | IC SEQUENCER/SUPERVISOR 48TQFP |
| ADM1067ACPZ | IC SEQUENCER/SUPERVISOR 40-LFCSP |
| ADM1068ASTZ-REEL7 | IC SEQUENCER/SUPERVISOR 32LQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1063ASUZ-REEL7 | 功能描述:IC SEQUENCER/SUPERVISOR 48TQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM1064 | 制造商:AD 制造商全称:Analog Devices 功能描述:Super Sequencer with Voltage Readback ADC |
| ADM1064ACP | 制造商:Analog Devices 功能描述:Volt Supervisor Sequencer 2.7V to 5.4V 40-Pin LFCSP EP |
| ADM1064ACP-REEL | 制造商:Analog Devices 功能描述:Volt Supervisor Sequencer 2.7V to 5.4V 40-Pin LFCSP EP T/R |
| ADM1064ACP-REEL7 | 制造商:Analog Devices 功能描述:Volt Supervisor Sequencer 2.7V to 5.4V 40-Pin LFCSP EP T/R |
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