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DAC0890CIJ bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện DAC0890CIJ
Giải thích chi tiết về linh kiện  Dual 8-bit mP-Compatible Digital-to-Analog Converter
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nhà sản xuất  NSC [National Semiconductor (TI)]
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Electrical Characteristics (Continued)
The following specifications apply for Va ea5V and Va ea15V and AGND e DGND e 0V unless otherwise specified
Boldface limits apply for TA e TJ e TMIN to TMAX all other limits TA e TJ e 25 C
Symbol
Parameter
Conditions
(Note 7)
Typical
Limit
Units
(Note 8)
VIHC
Control Logic High
22
V (min)
Threshold
Digital Input Current
(Note 17)
22
25
m
A (max)
tWR
Write Time
18
40
ns (min)
tDS
Data Setup Time
18
35
ns (min)
tDH
Data Hold Time
3
ns (max)
tCS
Control Setup Time
18
40
ns (min)
tCH
Control Hold Time
0
ns (max)
Note 1
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur DC and AC electrical specifications do not apply when operating
the device beyond its specified operating ratings Operating Ratings indicate conditions for which the device is functional but do not guarantee performance limits
For guaranteed specifications and test conditions see the Electrical Characteristics The guaranteed specifications apply only for the test conditions listed Some
performance characteristics may degrade when the device is not operated under the listed test conditions
Note 2
All voltages are measured with respect to AGND unless otherwise specified
Note 3
When the input voltage (VIN) at any pin exceeds the power supply rails (VIN k AGND or VIN l Va) the absolute value of current at that pin should be
limited to 5 mA or less
Note 4
The sum of the currents at all pins that are driven beyond the power supply voltages should not exceed 20 mA
Note 5
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX iJA and the ambient temperature TA The maximum
allowable power dissipation at any temperature is PD e (TJMAX -TA) iJA or the number given in the Absolute Maximum Ratings whichever is lower The
TJMAX( C) and iJA( CW) for the DAC0890CIJ are 125 C and 53 CW respectively
Part Number
TJMAX( C)
iJA( CW)
DAC0890CIJ
125
53
Note 6
Human body model 100 pF discharged through a 15 kX resistor
Note 7
Typicals are at 25 C unless otherwise specified and represent the most likely parametric norm
Note 8
Guaranteed to National’s AOQL (Average Outgoing Quality Level)
Note 9
Full Scale DAC-to-DAC Tracking is defined as the change in the voltage difference between the full scale output levels of DAC1 and DAC2 The result is
expressed in LSBs and it referred to the full-scale voltage difference at 25 C
Note 10
Analog Crosstalk is a measure of the change in one DAC’s full scale output voltage as the second DAC’s output voltage changes value It is measured as
the voltage change in one DAC’s full scale output voltage divided by the voltage range through which the second DAC’s output has changed (zero to full scale)
This ratio is then expressed in dB
Note 11
Glitch Energy is a worst case measurement over the entire input code range of transients that occur when changing code The positive and negative
areas of the transient waveforms are summed together to obtain the value listed
Note 12
Digital Feedthrough is measured with both DAC outputs latched at full scale and a 2 ns 5V step applied to all 8 data inputs This gives the worst case
digital feedthrough for the DAC0890
Note 13
Settling Time is specified for a positive full scale step to g
LSB Settling time for negative steps will be slower but may be improved with an external
pull-down resistor Negative settling time to g
LSB can be calculated for each range where tS e 623 (CLOAD)(RLOAD 10 kX) for the high range and tS e623
(CLOAD)(RLOAD 25 kX) for the low range
Note 14
Output Current Drive Capability is the minimum current that can be sourced by the output amplifiers with less than
LSB reduction in full scale Current
sinking capability is provided by a passive internal resistance of 10 kX in the high range and 25 kX in the low range
Note 15
Output Short Circuit Current is measured with the output at full-scale and shorted to AGND
Note 16
Power Supply Rejection Ratio is a measure of how much the output voltage changes (in parts-per-million) per change (in percent) in the power supply
voltage
Note 17
Digital Input Current is measured with 0V and Va input levels The limit specified is the higher of these two measurements
3


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