fabrication processing is used to take advantage of low-voltage
requirements, component matching, very low input-offset
errors, and small component geometries.
This device requires the presence of both south and north
polarity magnetic fields for operation. In the presence of a
south polarity field of sufficient strength, the device output
latches on, and only switches off when a north polarity field
of sufficient strength is present.
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Continued on the next page…
Not to scale
Functional Block Diagram
VCC
Regulator
To All Subcircuits
Sample and Hold
Dynamic Offset
Cancellation
Low-Pass
Filter
VOUT
Amp
Control
Current Limit
<1Ω
GND
A3282-DS, Rev. 3
A3282
Chopper-Stabilized Hall Effect Latch
LH is an SOT23-W, a miniature low-profile surface-mount package,
while package UA is a three-lead ultramini SIP for through-hole
mounting. Each package is available in a lead (Pb) free version,
with 100% matte tin plated leadframes.
Description (continued)
The A3282 is rated for operation between the ambient temperatures
–40°C and 85°C for the E temperature range, and –40°C to 150°C for
the L temperature range. The two package styles available provide
magnetically optimized solutions for most applications. Package
Selection Guide
Part Number
A3282ELHLT-T
A3282EUA-T
A3282LLHLT-T
A3282LUA-T
1
Pb-based
Pb-free
1
Yes
Yes
Yes
Yes
Packing
2
7-in. reel, 3000 pieces/reel
Bulk, 500 pieces/bag
7-in. reel, 3000 pieces/reel
Bulk, 500 pieces/bag
Mounting
3-pin SOT23W surface mount
3-pin SIP through hole
3-pin SOT23W surface mount
3-pin SIP through hole
Ambient, T
A
(°C)
–40 to 85
B
RP(MIN)
(G)
–150
B
OP(MAX)
(G)
150
–40 to 150
variants are being phased out of the product line.
a. Certain variants cited in this footnote are in production but have been determined to be LAST TIME BUY. This classification indicates that sale of this
device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in
the near future is probable. Samples are no longer available. Status change: October 31, 2006. Deadline for receipt of LAST TIME BUY ORDERS: April 27,
2007. These variants include: A3282ELHLT, A3282EUA, A3282LLHLT.
b. Certain variants cited in this footnote are in production but have been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of
this device is currently restricted to existing customer applications. The variants should not be purchased for new design applications because obsolescence
in the near future is probable. Samples are no longer available. Status change: May 1, 2006. These variants include: A3282LUA.
用的是DSP2833x_usDelay.asm里面这个延时函数，声明在DSP2833x_Examples.h里，
根据里面的注释，
;// 1 - update the CPU clock speed in the DSP2833x_Examples.h
;// file. For exampl ......
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