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AD8385ASVZ 数据表(PDF) 19 Page - Analog Devices

部件名 AD8385ASVZ
功能描述  10-Bit, 12-Channel Decimating LCD DECDRIVER with Level Shifters
PDF  24 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8385ASVZ 数据表(HTML) 19 Page - Analog Devices

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AD8385
Rev. 0 | Page 19 of 24
APPLICATIONS
IMAGE
PROCESSOR
1/3 AD8389
CLK
DXI, CLXI,
ENBX(1–4)I
DXxO, CLXxO,
ENBX(1–4)xO
MONITxI
µP
AD8385
VID(0:11)
DB(0:9)
STSQ, XFR,
CLK, R/L, INV
DIRX, DIRY,
DY, CLY,
CLYN, NRG
DIRXIN, DIRYIN,
DYIN, CLYIN,
NRGIN
MONITI
MONITO
DX,
CLX, CLXN,
ENBX (1–4)
DXIN,
CLXIN,
ENBXIN (1–4)
SDI
SCL
SEN
VAO1
VAO2
VRH, VRL,
V1, V2,
SVRH, SVRL
DC REFERENCE
VOLTAGES
MONITOR
VCOM
LCD TIMING
CONTROLS
LCD TIMING
CONTROLS
12-CHANNEL LCD
CHANNEL 0–5
Figure 16. Typical Applications Circuit
OPTIMIZED RELIABILITY WITH THE THERMAL SWITCH
While internal current limiters provide short-term protection
against temporary shorts at the outputs, the thermal switch
must be enabled to protect against persistent shorts lasting for
several seconds.
Initial Power-Up After Assembly or Repair Using a
Service Jumper
To optimize reliability with the use of the thermal switch, the
following sequence of operations is recommended:
1.
Ensure that the TSTM pin is high on initial power-up by
inserting a service jumper. See Figure 17.
2.
Execute the initial power-up.
3.
Identify any shorts at outputs.
4.
Power down, repair shorts, and repeat the initial power-up
sequence until proper system functionality is verified.
5.
Remove service jumper.
6.
Resume normal operation.
DVCC
DVCC
DGND
OPTION A
OPTION B
SERVICE
JUMPER
SERVICE
JUMPER
AD8385
TSTM PIN7
AD8385
TSTM PIN7
TO
µP
Figure 17. Service Jumper Location
Initial Power-Up after Assembly or Repair Using the
Serial Interface
1.
Immediately after power-up, send Code 011XXXXXXXXX
through the serial interface to enable the thermal switch
and disable the grounded output mode.
2.
Identify any shorts at the outputs.
3.
Power down, repair shorts, and repeat the initial power-up
sequence until proper system functionality is verified.
4.
Resume normal operation.



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