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參數(shù)資料
| 型號： | SD-14597D3-852 |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 位置變換器 |
| 英文描述： | SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, DIP36 |
| 封裝： | DDIP-36 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大?。?/td> | 416K |
| 代理商： | SD-14597D3-852 |
INTERFACING - ANALOG OUTPUTS
The analog outputs are ac error (e), Analog Return (V), and
Velocity (VEL).
AC ERROR (e, PIN 12)
The ac error is proportional to the difference between the input
angle
θ and the digital input angle φ, (θ-φ), with a scaling of:
3.5 mV rms/LSB (14-bit mode)
1.75 mV rms/LSB (16-bit mode)
The e output can swing ±3 V min with respect to Analog Return (V).
ANALOG RETURN (V, PIN 11)
This internal voltage is not required externally for normal opera-
tion of the converter. It is used as the internal dc reference and
the return for the VEL and e outputs. It is nominally +4.3 V and is
proportional to the +5 V DC supply.
VELOCITY (VEL, PIN 10)
The velocity output (VEL, pin 10) is a dc voltage proportional to angu-
lar velocity d
θ/dt. The velocity is the input to the voltage controlled
oscillator (VCO), as shown in FIGURE 1. Its linearity and accuracy is
dependent solely on the linearity and accuracy of the VCO.
The VEL output can swing ±1.10 V with respect to Analog Return
(V). The analog output VEL characteristics are listed in TABLES
4 and 5.
The VEL output has dc tachometer quality specs such that it can
be used as the velocity feedback in servo applications.
8
TABLE 4. VELOCITY CHARACTERISTICS
PARAMETER
UNITS
TYP
MAX
Polarity
VEL is negative for positive angular rate.
Device Type
Output Voltage (see note)
V
400 Hz
60 Hz
1.1
400 Hz
60 Hz
1.1
Voltage Scaling
rps/1.1 V See Vel. Voltage Scaling TABLE 5.
Scale Factor Error
Reversal Error
Linearity Error
Zero Offset
Load
10
1
0.5
5
0.5
10
1
0.5
5
0.5
15
2
1
20
0.5
15
2
1
20
0.5
Note: With respect to Analog Return (V)
TABLE 5. VELOCITY VOLTAGE SCALING
(Values in V/rps)
14 BIT
DEVICE TYPE
16 BIT
0.11
0.56
400 Hz
60 Hz
0.44
2.23
Note: If the resolution is changed while the input is changing, then the
velocity output voltage and the digital output will have a transient until
it settles to the new velocity scaling at a speed determined by the
bandwidth.
16-BIT BUS
(MSB) BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12
BIT 13
BIT 14
BIT 15
(LSB) BIT 16
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
HBE
LBE
INH
SD-14595/96/97
INH
DATA 1-16
VALID
500 ns MIN
150 ns MIN
0 ns MIN
100 ns MAX
HBE, LBE
FIGURE 14. 16-BIT DATA TRANSFER TIMING
FIGURE 13. 16-BIT DATA TRANSFER
%
% output
mV
mA
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