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DAC0890 の電気的特性と機能

DAC0890のメーカーはNational Semiconductorです、この部品の機能は「Dual 8-bit mP-Compatible Digital-to-Analog Converter」です。


製品の詳細 ( Datasheet PDF )

部品番号 DAC0890
部品説明 Dual 8-bit mP-Compatible Digital-to-Analog Converter
メーカ National Semiconductor
ロゴ National Semiconductor ロゴ 




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DAC0890 Datasheet, DAC0890 PDF,ピン配置, 機能
May 1995
DAC0890
Dual 8-bit mP-Compatible Digital-to-Analog Converter
General Description
The DAC0890 is a complete dual 8-bit voltage output digital-
to-analog converter that can operate on a single 5V supply
It includes on-chip output amplifiers precision bandgap volt-
age reference and full microprocessor interface
Each DAC0890 output amplifier has two externally select-
able output ranges 0V to 2 55V and 0V to 10 2V The ampli-
fiers are internally trimmed for offset and full-scale accuracy
and therefore require no external user trims
The DAC0890 is supplied in 20-pin ceramic DIP package
Features
Y Two 8-bit voltage output DACs
Y 4 75V to 16 5V single operation
Y Guaranteed monotonic over temperature
Y Internal precision bandgap reference
Y Two calibrated output ranges 2 55V and 10 2V
Y 2 ms settling time for full-scale output change
Y No external trims
Y Microprocessor interface
Applications
Y Industrial processing controls
Y Automotive controls
Y Disk drive motor controls
Y Automatic test equipment
Block Diagram
Ordering Information
Industrial (b40 C s TA s a85 C)
DAC0890CIJ
Package
J20A Cerdip
Connection Diagram
Dual-In-Line Package
TL H 10592 – 1
C1995 National Semiconductor Corporation TL H 10592
Top View
TL H 10592 – 2
RRD-B30M115 Printed in U S A

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DAC0890 pdf, ピン配列
Electrical Characteristics (Continued)
The following specifications apply for Va e a5V and Va e a15V 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
Typical
(Note 7)
Limit
(Note 8)
Units
VIHC
Control Logic High
Threshold
2 2 V (min)
Digital Input Current
(Note 17)
22
25 mA (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( C W) for the DAC0890CIJ are 125 C and 53 C W respectively
Part Number
DAC0890CIJ
TJMAX( C)
125
iJA( C W)
53
Note 6 Human body model 100 pF discharged through a 1 5 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 6 23 (CLOAD) (RLOAD 10 kX) for the high range and tS e6 23
(CLOAD) (RLOAD 2 5 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 2 5 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


3Pages


DAC0890 電子部品, 半導体
Timing Waveforms
TL H 10592 – 5
6

6 Page



ページ 合計 : 12 ページ
 
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共有リンク

Link :


部品番号部品説明メーカ
DAC0890

Dual 8-bit mP-Compatible Digital-to-Analog Converter

National Semiconductor
National Semiconductor
DAC0890

DAC0890 Dual 8-bit MuP-Compatible Digital-to-Analog Converter (Rev. A)

Texas Instruments
Texas Instruments
DAC0890CIJ

Dual 8-bit mP-Compatible Digital-to-Analog Converter

National Semiconductor
National Semiconductor


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