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参数资料
| 型号： | DS-11802D4-464Y |
| 厂商： | DATA DEVICE CORP |
| 元件分类： | 位置变换器 |
| 英文描述： | DIGITAL TO SYNCHRO OR RESOLVER, CDIP28 |
| 封装： | CERAMIC, DDIP-28 |
| 文件页数： | 3/8页 |
| 文件大小： | 341K |
| 代理商： | DS-11802D4-464Y |
DATA TRANSFER FROM AN 8-BIT DATA BUS
Applications with a 8-bit data bus require two-byte loading of the
digital input (see FIGURE 4).
FIGURE 5 shows the timing for two-byte data transfers.
DIGITAL INTERFACE
The DS-11802 has double-buffered input registers which allow
easy implementation of an interface with 8-bit or 16-bit data
buses. The DS-11802 can also be set up for asynchronous data
inputs. If the LBE, HBE and LDC input pins are left open, the
internal pull-up circuitry will set these pins to a high state and the
information at the data inputs (B1-B16) is continuously convert-
ed to sin
θ and cosθ at the analog outputs. For applications
requiring less than 16-bit resolution, the unused data bit pins can
be left open. The data bits (B1-B16) are internally pulled-down to
apply a logic “0” to unconnected data inputs.
3
90
180
270
360
θ (DEGREES)
In Phase with V
in
0
SIN
θ
COS
θ
- V
MAX
+ V
MAX
SIN OUTPUT = K Vin
(1+n) SIN
θ
COS OUTPUT = K Vin
(1+n) COS
θ
WHERE:
K IS THE GAIN OF THE CONVERTER.
n IS THE SCALE FACTOR VARIATION AS A
FUNCTION OF DIGITAL ANGLE(±
0.2%)
FIGURE 3. OUTPUT PHASING
1
12
4
3
2
5
6
7
8
11
13
14
15
16
17
18
LBE
HBE
LDC
LOAD
CONVERTER
LOAD MSBs
LOAD LSBs
DS-11802
(MSB)
(LSB)
D7
D1
D2
D3
D4
D5
D6
D0
HBE
LBE
DATA BUS
19
9
10
24
22
20
23
21K
2.33K
2.92K
8.75K
INTERNAL
REFERENCE
GC2
GC1
VIN
TP1
FIGURE 2. REFERENCE CONDITIONER
FIGURE 4. DATA TRANSFER FROM 8-BIT BUS
PULSE
WIDTH
800 ns
MIN
PULSE
WIDTH
600ns
MIN
DATA TRANSFERRED TO
HOLDING REGISTERS
8 MSBs TRANSFERRED
TO INPUT REGISTERS
DATA
CHANGING
DATA
STEADY
(LSBs)
DATA SET UP
DATA HOLD
200ns
MIN
(MSBs)
8 LSBs TRANSFERRED
TO INPUT REGISTERS
DATA
LBE
LDC
HBE
Data Hold
200 ns
MIN
PULSE
WIDTH
800 ns
MIN
FIGURE 5. TIMING FOR 8-BIT BUS TRANSFER
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS-11802D4-464Z | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Converter |
| DS-11802D4-465 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Converter |
| DS-11802D4-465K | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Converter |
| DS-11802D4-465L | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Converter |
| DS-11802D4-465Q | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Converter |
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