- 您现在的位置：买卖IC网 > PDF目录16316 > ADM1069ASTZ (Analog Devices Inc)IC SUPERVISOR/SEQUENCER 32-LQFP PDF资料下载
参数资料
| 型号： | ADM1069ASTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/32页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR/SEQUENCER 32-LQFP |
| 标准包装： | 1 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 8 |
| 输出： | 可编程 |
| 电压 - 阀值： | 8 种可选阀值组合 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
| 产品目录页面： | 788 (CN2011-ZH PDF) |
| 配用： | EVAL-ADM1069LQEBZ-ND - BOARD EVALUATION FOR ADM1069LQ |
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页当前第20页第21页第22页第23页第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
ADM1069
VOLTAGE READBACK
The ADM1069 has an on-board, 12-bit, accurate ADC for voltage
readback over the SMBus. The ADC has an 8-channel analog
mux on the front end. The eight channels consist of the eight
Table 9. ADC Input Voltage Ranges
SFD Input Attenuation
Range (V) Factor
ADC Input Voltage
Range (V)
SFD inputs (VH, VPx, and VXx). 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 conti-
nuously. Averaging is also provided for each channel. In this case,
0.573 to 1.375
1.25 to 3.00
2.5 to 6.0
6.0 to 14.4
1
2.181
4.363
10.472
0 to 2.048
0 to 4.46
0 to 6.0 1
0 to 14.4 1
The upper limit is the absolute maximum allowed voltage on the VPx and
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
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
VXx
NO ATTENUATION
12-BIT
ADC
DIGITIZED
VOLTAGE
READING
supervisory range limits (but not above the absolute maximum
ratings on these pins). For example, a 1.5 V supply connected to
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
2.048V VREF
Figure 30. ADC Reading on VXx Pins
that can be set on that pin. The maximum setting for the REFIN
pin is 2.048 V.
SUPPLY SUPERVISION WITH THE ADC
VPx/VH
ATTENUATION NETWORK
(DEPENDS ON RANGE SELECTED)
12-BIT
ADC
DIGITIZED
VOLTAGE
READING
In addition to the readback capability, another level of supervision
is provided by the on-chip 12-bit ADC. The ADM1069 has limit
registers with which the user can program a maximum or mini-
mum allowable threshold. Exceeding the threshold generates a
warning that can either be read back from the status registers
2.048V VREF
Figure 31. ADC Reading on VPx/VH Pins
The voltage at the input pin can be derived from the following
equation:
or input into the SE to determine what sequencing action the
ADM1069 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
V =
ADC Code
4095
× Attenuation Factor × V REFIN
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
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
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 approx-
imately 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 |
|---|---|
| EET-UQ2C182CA | CAP ALUM 1800UF 160V 20% SNAP |
| 2-6278892-5 | CA,62.5,MTRJ-MTRJ |
| EET-ED2W121DA | CAP ALUM 120UF 450V 20% SNAP |
| LTC2928CUHF#PBF | IC PWR SUPPLY SEQUENCER 38-QFN |
| LTC691CSW#PBF | IC MPU SUPERVISRY CIRCUIT 16SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1069ASTZ-REEL | 功能描述:IC SEQUENCER/SUPERVISOR 32LQFP 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 |
| ADM1069ASTZ-REEL7 | 功能描述:IC SEQUENCER/SUPERVISOR 32LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 其它有关文件:STM6905 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:5 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 140 ms 电压 - 阀值:2.188V，2.955V，可调，可调，可调 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-TSSOP 包装:Digi-Reel® 产品目录页面:1197 (CN2011-ZH PDF) 其它名称:497-8728-6 |
| ADM1070 | 制造商:AD 制造商全称:Analog Devices 功能描述:-48 V Hot Swap Controller |
| ADM1070ART | 制造商:AD 制造商全称:Analog Devices 功能描述:-48 V Hot Swap Controller |
| ADM1070ART-REEL | 制造商:Analog Devices 功能描述:Hot Swap Controller 1-CH -80V 6-Pin SOT-23 T/R 制造商:Analog Devices 功能描述:6-PIN -48V HOT SWAP CONTROLLER I.C. - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:6-PIN -48V HOT SWAP CONTROLLER I.C. - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。