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參數(shù)資料
| 型號(hào)： | MAX9949DCCB+TD |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/23頁 |
| 文件大小： | 0K |
| 描述： | IC PMU DUAL 64TQFP |
| 標(biāo)準(zhǔn)包裝： | 750 |
| 系列： | * |
MAX9949/MAX9950
Dual Per-Pin Parametric Measurement Units
20
______________________________________________________________________________________
Short-Circuit Protection
The FORCE_ output and SENSE_ input can withstand a
short to any voltage between the supply rails.
Mode and Range Change Transients
The MAX9949/MAX9950 feature make-before-break
switching to minimize glitches. The integrated voltage
clamps also reduce glitching on the output.
DUT Voltage Swing vs. DUT Current and
Power-Supply Voltages
Several factors limit the actual DUT voltage that the
PMU delivers:
1) The overhead required by the amplifiers and other
integrated circuitry—this is typically 3.5V from each
rail for no load current and 5V under full load
2) The voltage drop across the current-range select
resistor and internal circuitry in series with the sense
resistor—at full current, the combined voltage drop is
typically 2.75V
3) Variations in the power supplies—system implemen-
tation determines the variance
4) Variation of DUT ground vs. PMU ground—system
implementation determines the variance
Neglecting the effects of the third and fourth items,
Figure 8 demonstrates the force output capabilities
of the PMU.
Figure 8 indicates that, for zero DUT current, the
DUT voltage swings from (VEE + 3.5V) to (VCC -
3.5V). For larger positive DUT currents, the positive
swing drops off linearly until it reaches (VCC - 5V) at
full current. Similarly, for larger negative DUT cur-
rents, the negative voltage swing drops off linearly
until it reaches (VEE + 5V) at full current.
Settling Times and Compensation
Capacitors
The data in the
Electrical Characteristics table reflects
the circuit shown in the block diagram that includes a
single compensation capacitor (Cx) effectively across all
the sense resistors. Placing individual capacitors, CRA,
CRB, CRC, CRD, and CRE directly across the sense
resistors, R_A, R_B, R_C, R_D, and R_E, independently
optimizes each range.
The combination of the capacitance across the sense
resistors (Cx or CRA, CRB, CRC, CRD, and CRE) and the
main amplifier compensation comparator, CCM, ensures
stability into the maximum expected load capacitance
while optimizing settling time.
Digital Inputs (SCLK, DIN,
CS, LOAD)
The digital inputs incorporate hysteresis to mitigate
issues with noise, as well as provide for compatibility
with opto-isolators that can have slow edges.
Chip Information
PROCESS: BiCMOS
IDUT
VDUT
IMIN
VEE + 5V
VEE + 3.5V
VEE - 5V
VEE - 3.5V
Figure 8. PMU Force Output Capability
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9949FCCB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9949FCCB+ | 制造商:Maxim Integrated Products 功能描述:DUAL PER PIN PARAMETRIC MEASUREMENT UNIT 64TQFP - Rail/Tube |
| MAX9949FCCB+D | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MAX9949FCCB+T | 制造商:Maxim Integrated Products 功能描述:PARAMETRIC MEASUREMENT UNIT 64TQFP - Tape and Reel |
| MAX9949FCCB+TD | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
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