AD8511(1997) 데이터 시트보기 (PDF) - Analog Devices
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AD8511 Datasheet PDF : 4 Pages
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AD8509/AD8511
APPLICATIONS
The AD8509 and AD8511 are CMOS buffers with A/B inputs,
which are used to select between two different reference voltages
set up by an external resistor ladder. Input bias currents are or-
ders of magnitude less than competitive parts, allowing very
large resistor ladders to be used to save supply current. A guar-
anteed value of 50 nA is much higher than actual values and is
limited by leakage in the test system.
Buffer outputs are designed to drive resistive loads. They are
also stable with capacitive loads, so no resistors should be used
in series with these outputs to attain the best display perfor-
mance. Outputs have high slew rates and 6 µs settling times.
Each output is capable of delivering a minimum of 120 mA,
assuring fast response to varying loads.
The AD8509 is a 9-channel buffer and is similar to the LMC6009
in functionality. The AD8511 is an 11-channel buffer similar to the
CL-FP6131. However, the control to select either 9- or 11-channel
operation, the EN_11 pin of the CL-FP6131, is not available on
the AD8511. If 9-channel operation is desired, use the AD8509.
Power supply pins on the AD8509 and AD8511 have multiple
ground and VCC connections. Because of the high peak currents
that these buffers can deliver, it is strongly recommended that all
be connected, and that the VCC pins be suitably bypassed.
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
48-Lead TSSOP
(RU Suffix)
0.488 (12.4)
0.496 (12.6)
48
25
1
0.006 (0.15) PIN 1
0.002 (0.05)
SEATING
PLANE
0.0197 (0.5)
BSC
0.0116 (0.27)
0.0067 (0.17)
24
0.0433
(1.10)
MAX
8°
0°
0.0079 (0.20)
0.0035 (0.090)
0.028 (0.70)
0.020 (0.50)
–4–
REV. 0
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