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參數(shù)資料
| 型號： | DRC-10520-294S |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 位置變換器 |
| 英文描述： | DIGITAL TO SYNCHRO OR RESOLVER, DMA32 |
| 封裝： | TRIPLE, DIP-32 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 167K |
| 代理商： | DRC-10520-294S |
3
Data Device Corporation
www.ddc-web.com
DRC-10520
N-05/05-0
TABLE 1. DRC-10520 SPECIFICATIONS
Apply over temperature range power supply ranges reference voltage
and frequency range and 10% harmonic distortion in the reference.
PARAMETER
VALUE
RESOLUTION
16 bits
ACCURACY AND
DYNAMICS
Output Accuracy
Without Scott-T
With Scott-T P/N29305
Differential Linearity
Output Settling Time
±1 or ±4 minutes
±10 minutes (1.5 VA min for CT load)
±16 minutes (2 VA min for CT load)
±1 LSB
Less than 40 sec for any digital input
step change
DIGITAL INPUT
Logic Type
Logic Voltage level
Load Current
Timing
Natural binary angle parallel positive logic
CMOS and TTL compatible.
Inputs are CMOS transient protected.
Logic 0 = 0 to +1.25 V
Logic 1 = 2 V to 5 V
20 A max to GND (bit 1-16)
20 A max to VL (LL LM LA)
See Timing Diagram (FIGURES 2A&2B ).
REFERENCE INPUT
Type
Voltage
Frequency
Input Impedance
Single Ended
Differential
Differential 3.4 V rms
Higher voltages are scaled by adding
series resistors
DC to 1 kHz
13 k
±0.5%
26 k
±0.5%
ANALOG OUTPUT
Type
Output Current
Max Output Voltage (tracks
reference input voltage)
Scale Factor Variation
DC Offset (each line to
ground)
Protection
Resolver
300 mA rms min (2 VA min)
(SEE NOTE 2)
6.8V rms max line-to-line ±1%
Simultaneous amplitude variation in all
output lines as function of digital angle is
±0.1% max.
±15 mV max varies with input angle.
Output is protected from overcurrent short
circuits and voltage feedback transients.
POWER SUPPLIES
Voltage
Voltage Limits
Max Voltage Without Damage
Current
Peak Current At Power Turn
On or Short Circuit (when
using Transformer)
+15V
-15V
+V
-V
+5%
20 V peak max
3 V above output
voltage min.
+18V
-18V
+25V
-25V
20 mA
20 mA load dependent
max
700 mA max (*See Note 1)
TEMPERATURE RANGES
Operating (-3xx)
(-1xx)
Storage
0°C to +70°C case
-55°C to +125°C case
-55°C to +135°C
PHYSICAL
CHARACTERISTICS
Package Type
Size
Weight
32 pin triple DIP
1.14 x 1.74 x 0.18 inch (29 x 44 x 4 mm)
1.15 oz (33 g)
NOTES for Table 1:
1) 700ma per P/S is in relationship to driving torque loads. Large step
torque loads can cause converter to pull max current. For these condi-
tions the converter seat sink protection is very important. A solution to
combat large step torque loads is to convert the large steps in position
change to occur over smaller steps which will decrease peak P/S cur-
rents.
2) Output voltage can be scaled by lowering reference voltage. Factory
set for fixed factor of 2. 3.4V Ref Input = 6.8V Output.
TECHNICAL INFORMATION INTRODUCTION
The DRC-10520 is a digital-to-resolver (D/R) converter which
has an inherently high accuracy and low scale factor variation.
The circuit is based on an algorithm whose theoretical math error
is only ±3.5 arc seconds and whose theoretical scale factor vari-
ation with angle is less than ±0.015%. Therefore accuracy and
scale factor are limited only by the physical components, not by
the algorithm.
The digital inputs are CMOS double buffered transparent latches
(FIGURE 1). Angular output is determined by adding bits in the
logic 1 state.
POWER SUPPLY CYCLING
Power supply cycling of the DDC converter should follow the
guidelines below to avoid any potential problems. Strictly main-
tain proper sequencing of supplies and signals per typical
CMOS circuit guidelines:
- Apply power supplies first (+15, -15V and ground).
- Apply digital control signals next.
- Apply analog signals last.
The reverse sequence should be followed during power down
of the circuit.
REFERENCE LEVEL ADJUSTMENT
The input is specified for operation at a reference level of 3.4V
rms; however, reference levels other than 3.4V rms may be
scaled by calculating the value of the scaling resistor with the fol-
lowing equation:
(V
REF - 3.4)
R
REF =
x 13k
3.4
(26 - 3.4)
eg., if V
REF = 26 V rms, then RREF =
x 13k
3.4
DRC-10520
REF
INPUT
R
REF
R
REF
R
H
R
L
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