參數(shù)資料
型號(hào)： DTL2A
廠商： CD TECHNOLOGIES INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, MDMA11
文件頁數(shù)： 3/5頁
文件大?。?/td> 400K
代理商： DTL2A
DTL2A Model
Digital Inputs/Outputs
Logic Compatibility (Pins 1, 4-7)
CMOS/TTL
Input Logic Levels:
Logic "1"
+2 Volts, minimum
Logic "0"
+0.8 Volts, maximum
Input Logic Loading:
Logic "1" (IIH @ VIH = 5 Volts)
20A, maximum
Logic "0" (IIL @ VIL = 0 Volts)
–0.6mA, maximum
Output Logic Levels:
Logic "1" (@ 150A)
+3.5 Volts, minimum
Logic "0" (@ 1.6mA)
+0.4 Volts, maximum
Timing
See Timing Diagram
Output
Current:
Range
0-20 Amps
Resolution
0.024%FS (4.88mA)
Accuracy
±1%, maximum
Voltage Range
2.5-50 Volts
Power Range
0-100 Watts
Impedance
10M
, minimum
Offset Error
±5mA, maximum
Gain Error
±0.1%, maximum
Isolation Voltage:
Digital Inputs/Output to ±Load
500Vdc, minimum
Any Pin to Case
500Vdc, minimum
Isolation Resistance
100M
, minimum
Dynamic Performance
Output Slew Rate
±10A/sec, minimum
Output Settling Time
100sec
Digital Input Update Rate
to 20kHz
Power Requirements
Power Supply Range (+VCC, Pin 3)
+4.75-5.25 Volts (+5V nominal)
Power Supply Current
110mA typ., 150mA max.
Environmental
Operating Temperature
–40 to +100°C (Case)
Storage Temperature
–40 to +125°C (Ambient)
Humidity (Non-condensing)
to 95%
Altitude Above Sea Level
10,000 feet
Physical
Dimensions
2" x 2" x 0.5" (51 x 51 x 12.7mm)
Shielding
6-sided (Connected to pin 2)
Case Material
Tin-plated steel shell with
aluminum baseplate
Pin Material
Brass, solder coated
Mounting Holes
Through-hole spacers, #4-40 clearance
Weight
1.9 ounces (54 grams)
The smallest increment/decrement in output current is dened by one LSB (least signicant
bit) of the 12-bit digital input word. One LSB is equal to full scale (FS) divided by 4096 which
corresponds to 0.0244% of 20A or 4.88mA.
For proper operation, the unit's output/load voltage must remain within this range. Voltages
greater than the listed maximum can damage the device. Voltages less than than the minimum
provide insufcient bias for the output stage and will result in unpredictable or no operation.
See Output Compliance Voltage and the Fault Line for details.
Offset error is dened as the current sunk/sourced by the DTL2A’s output, under any output
voltage conditions, when the digital input word is all "0's."
Full scale step (20 Amps) settling to within ±5mA of its nal value.
See Temperature Derating.
Applies over all specied ranges/combinations of load voltage/current, operating temperature,
and VCC.
Power Supply Voltage (+VCC, Pin 3)
–0.5 to +5.5 Volts
Digital Input Voltage (Pins 4-7)
–0.5 to +5.5 Volts
Output Reverse-Polarity Protection
No protection
Output Overvoltage Protection
No protection
Output Undervoltage Protection
Yes (See Fault Line)
Case Temperature
+105°C
Storage Temperature (Ambient)
–40 to +125°C
Lead Temperature (soldering, 10 sec.)
+300°C
Absolute Maximum Ratings
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specications Table is not implied.
Overview
The DTL2A is a digitally programmable, CMOS/TTL-compatible, serial-input
current sink. It’s output/load current range is 0 to 20 Amps (in 4.88mA
increments), over a compliance voltage range of 2.5 to 50 Volts and an output/
load power range of 0 to 100 Watts. The device’s digital I/O coding is straight
binary (see table below). A digital input of all "0’s" forces a load current of 0
Amps. A digital input of all "1’s" forces a load current of 19.995 Amps.
In a typical power-supply test or burn-in application, the output pins of the
device under test (DUT) are connected to the DTL2A’s +Load (pins 10 and 11)
and –Load (pins 8 and 9) outputs. The DTL2A’s operation is controlled by its
four digital input lines (Serial Data In, Clock, Latch Data and Control Strobe).
TECHNICAL NO TES
MSB
LSB
DTL2A
1111
19.995
1100
0000
15.000
1000
0000
10.000
0111
1111
9.995
0100
0000
5.000
0010
0000
2.500
0000
0001
0.005
0000
0.000
Serial Input Data Word
Load Current (Amps)
Mapping of the Serial-Input Data to Load Current
3
100 W A TT , SERIAL-INPUT ELECTR ONIC LO ADS
Performance/Functional Specications
Typical @ TA = +25°C with nominal +5V supply voltage, unless noted.
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