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參數(shù)資料
| 型號： | ADD8502 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:128; Series:LJT00R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:25-35 |
| 中文描述： | 整合式LCD灰度發(fā)生器 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大小： | 1436K |
| 代理商： | ADD8502 |
REV. 0
ADD8502
–13–
The ADD8502 will have a quiescent current less than 1
μ
A when
it is fully shut down and all output buffers are switched to a high
impedance state. The only active circuitries are the digital logics
and the latches for the serial control. When the device is brought
back from Sleep Mode to normal operation, it will use the last
serial word to update the DACs or a new control code or data if
any was loaded when the part was in Sleep Mode; i.e., the contents
of the input register, DAC register, and power-down status shown
in Table II is retained as long as V
DD
and V
L
are on.
The second power save mode (mid 3 buffers are shut down) is
using GS1 and GS2. In a condition where both GS1 and GS2
logics are HIGH, the output buffers (V1, V2, and V3) are shut
down and switched into a high impedance state.
Table III. Shutdown Control Function
Serial
Control
Operation
Mode
PSK
GS1
GS2
H
Wake
L
L
Normal Operation
H
Wake
L
H
Normal Operation
H
Wake
H
L
Normal Operation
H
Wake
H
H
Mid 3 Buffers are Shutdown
H
Sleep
X
X
Full Shutdown
L
X
X
X
Full Shutdown
X = Don’t Care
V
COM
Logic
V
COM
operation is described in Table IV. The V
COM
logic is
always active and its logic inputs are CM, REV1, and CV4.
When CM is LOW, COM is connected to COM_M. When CM
is HIGH, COM is determined by the logic input of REV1. If
REV1 is HIGH, COM is connected to V
DD
. When REV1 is
LOW, COM is connected to GND.
CV4 controls the V4 output. If CV4 goes LOW, V4 is connected
to COM and A4 is shut down with its output in a Hi-Z state.
When CV4 is HIGH, the switch connecting V4 to COM is open
and A4 is in normal operation mode.
Table IV. V
COM
Logic Control
Inputs
Outputs
CM
REV1
CV4
V
COM
COM_M
V4
L
X
L
COM
L
X
H
COM_M
A4
H
L
L
GND
COM
H
H
L
V
DD
GND
COM
H
L
H
A4
H
H
H
V
DD
A4
X = Don’t Care
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