参数资料
| 型号： | MAX9979EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 46/60页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT MAX9979 |
| 标准包装： | 1 |
| 系列： | * |
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Dual 1.1Gbps Pin Electronics with Integrated
PMU and Level-Setting DACs
PMU Voltage/Current-Limit Flags
The PMU features two comparators, arranged as a win-
dow comparator, to flag current or voltage levels, allow-
Table 15. Measure Output High-Impedance
Control Logic
ing fast go/no-go testing. The comparators monitor the
load current or voltage, and compare it to level-setting
DACs IVMAX and IVMIN. The MMODE_ bit selects
whether the window comparator monitors MEASV_ or
MEASI_ (Figure 6). If MMODE_ selects MEASV_ then
the PMUSENSE_ bit selects either the SENSE_ input or
DUT_ (Figure 6).
HIZMEASS_
BIT
1
1
0
0
HIZMEASP_
INPUT
1
0
1
0
MEAS_ STATE
Measure output enabled
High impedance
High impedance
High impedance
Independent Control of PMU Feedback Switch
and Measure Switch
Two single-pole/double-throw (SPDT) switches deter-
mine the mode of operation of the PMU. One switch
determines whether the sensed DUT_ current or DUT_
voltage is fed back to the input, and thus determines
which of these parameters is forced. The other switch
determines whether the sensed DUT_ current or DUT_
voltage is presented at MEAS_. Independent control of
these switches and the force high-impedance state
allow for flexible modes of operation beyond the tradi-
tional force-voltage/measure-current (FVMI) and force-
current/measure-voltage (FIMV) modes. The modes
supported are:
? FVMI: Force-voltage/measure-current mode
? FIMV: Force-current/measure-voltage mode
? FVMV: Force-voltage/measure-voltage mode
? FIMI: Force-current/measure-current mode
? FNMV: Force-nothing/measure-voltage mode
? FNMN: Force-nothing/measure-nothing mode
PMU Measure Output High-Impedance Control
The MEAS_ output features a low-leakage, high-imped-
ance state. To activate this state, either place the
HIZMEASS_ bit low or force the HIZMEASP_ logic input
low. The two controls are logically ANDed together
(Figure 6). The HIZMEASP_ input allows multiplexing
between PMU measure outputs without the use of the ser-
ial interface. At power-up, HIZMEASS_ defaults low, plac-
ing MEAS_ in a high-impedance state. Table 15 presents
the high-impedance control logic for the MEAS_ output.
PMU Low-Leakage Mode
The PMU output features a low-leakage, high-imped-
ance state. To activate this state, either place the
HIZFORCE_ bit low or force the LLEAKP_ logic input
low. The two controls are logically ANDed together
(Figure 6). At power-up, HIZFORCE_ defaults low, placing
the PMU in a low-leakage state. Table 1 presents the
low-leakage logic for the PMU output.
PMU DUT Ground Sense (DGS)
All the DAC and MEAS_ outputs track with respect to
the DUT ground sense input (DGS). Connect DGS to
the ground of the device under test.
PMU DUT_ Node Force and Sense Switches
The MAX9979 features additional PMU force (PMU-F)
and PMU sense (PMU-S) connections, through serial-
controlled switches, that are shared between channels
(Figure 6) and can be used to connect an external
PMU. The force switch is maximum 100 Ω , and the
sense switch is maximum 2.5k Ω .
PMU DUT_ Voltage Swing vs. DUT_ Current
and Power-Supply Voltages
Two issues limit the DUT_ voltage that the PMU delivers.
The first issue is the headroom required by the ampli-
fiers and other on-chip circuitry at zero output current.
The second issue is the headroom required with sense
resistor and additional circuit voltage drops at full-scale
current. When the PMU is sourcing or sinking DUT_ cur-
rent, the voltage range is reduced linearly. This compli-
ance curve applies to both FV and FI modes and is
independent of V DGS . Because the forced DUT_ voltage
in FV mode is = DGS + V IN , V DUT_ is further limited by
the V DGS and the -2.5V to +7.5V V IN range. Force out-
put capabilities of the PMU are presented in Figure 7.
These limitations are based on the guaranteed perfor-
mance of the MAX9979. Operating the DUT node outside
these limits will not harm the MAX9979, as long as the
absolute maximum rating limits are observed. With the
above considerations, it is possible to extend the range of
the DUT swing beyond the limits of Figure 7. However,
some specifications, such as linearity, will begin to
degrade. Performance while operating outside the limits
shown in Figure 7 is not guaranteed.
46
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9979EVKIT+ | 功能描述:其他开发工具 MAX9979 Eval Kit RoHS:否 制造商:Parallax 产品:ELEV-8 Hex Upgrade Kits 类型:Robotics 工具用于评估:ELEV-8 Quadcopter 工作电源电压: |
| MAX9979KCTK+D | 制造商:Maxim Integrated Products 功能描述:DUAL 1.1GBPS PIN ELECTRONICS WITH INTEGRATED PMU AND LEVEL - Bulk 制造商:Maxim Integrated Products 功能描述:DUAL INTEGRATED PIN IC |
| MAX9979KCTK+TD | 制造商:Maxim Integrated Products 功能描述:DUAL 1.1GBPS PIN ELECTRONICS WITH INTEGRATED PMU AND LEVEL-S - Tape and Reel |
| MAX997ESA | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX997ESA+ | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
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