AD900 Analog Devices, Inc., AD900 Datasheet - Page 5

• Manufacturer Part Number: AD900
• Description: Highspeed 6-bit Aidconverter
• Manufacturer: Analog Devices, Inc.

ANALOG DEVICES fAX-ON-DEMAND HOTLINE
AD9006/AD9016 PIN DESCRIPTIONS
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ANALOG IN
ANALOG +Vs
GROUND
OVERFLOW
BIT INVERT
REV. A
+VREF
+VSENSE
OVERFLOWINHftIIT
BIT INVERTIMSB'
INHIBIT
(MSB)
0,-0.
DiGITAL -v.
DiGITAL -v,
O\l£RFLOW
GROUND
GROUND
D,IMSB'
INVERT
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AD9006 Pin Designations
nominally between -1. 0V and + 1.OV.
Not internally connected.
Analog input connection. Analog input is
Positive supply pins; nominally +5.0V.
The positive reference voltage applied to
the internal resisror ladder.
The sense line is intended for connection
current capability. It is intended to be
Analog and digital ground connections for
connected together and to a low impedance
overflow inhibit is connected to -5.2V or
allowed to float, OVERFLOW
Voltage sense line to the most positive
reference voltage of the resistor ladder.
to a high impedance node and has limited
used to null offset at the rop of the
reference ladder.
the AD9006/AD9016 units. For optimum
performance, all grounds should be
ground plane as close to the device as
possible. [NOTE: On both the AD9006
and the AD9016, Pins 8, 9, IS, 16, 35, 36,
56 and 57 are digital ground (DGND);
pins 67 and 68 are analog ground
(AGND).]
Overflow bit control pin. OVERFLOW
INHIBIT is connected to ground for
normal operation (no overflow bit,
nonretUrn-to- zero operation). When
and output bits = LOW when the analog
input voltage exceeds + VSENSE)'
Most significant bit (Dos) control pin. BIT
INVERT (MSB) is connected to ground
for normal operation. When connected to
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MIDSCALEv.,.,
HYSTERESIS
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GROUND
GROUND
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He
NC
NC
NC
NC
NC
NC
He
He
NC
NC
HIGH
-5-
Do-D4
OVERFLOW
OVERFLOW
DSA
D'A-D4A
DOA
DATA READYA
DIGITAL
ANALOG -Vs
D5B
OVERfLOW
BIT "'V~RT
INVERT
D..,<>,IN\IERT
DiGITAL -v.
OtGITAL -v.
OVERFLOW.
D~ IM58'
GROUND
GROUND
INHIBjT
IMSB'
Doo
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NC
NC
D,.
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-Vs
A
B
AD9016 Pin Designations
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inverted.
Bits Do-D4 control pin, connected to
ground for normal operation. When
connected to -5.2V or allowed to float,
Do-D4 data oUtputs are inverted.
AD9016 only. Overflow data output for
the analog input is greater than + VSENSE
when OVERFLOW INHIBIT pin is
AD9016 only. Most significant bit (MSB)
digital data oUtput of Data Bank "A."
AD9016 only. D'A through D4Adigital
data oUtputs from Data Bank "A."
AD9016 only. Least significant bit (LSB)
digital data outpUt of Data Bank "A."
AD9016 only. Output Data of Bank "An
are valid at the rising edge of the DATA
READY A pulse. Bank "An carries every
other sample of the ND conversion; Bank
"B" carries the remaining samples.
Negative digital supply pins, nominally
AD9016 only. Overflow data output for
analog inpUt is greater than + VSENSE
when OVERFLOW INHIBIT pin is
AD9016 only. Most significant bit (MSB)
Data Bank" A." Logic HIGH indicates
LOW (-5.2V).
Negative analog supply pins, nominally
Data Bank "R." Logic HIGH indicates
LOW (-5.2V).
digital data output of Data Bank "B."
-5.2V.
-5.2V or allowed to float, MSB outpUt is
-5.2V.
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MIDSCALE
HYSTERESIS
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GROUND
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D..
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D..
NC
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