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ML2350CIS/5 Single Supply, Programmable 8-Bit D/A Converters
型号:   ML2350CIS/5
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描述:   Single Supply, Programmable 8-Bit D/A Converters
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品牌   MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
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100%
May 1997
ML2340*, ML2350**
Single Supply, Programmable
8-Bit D/A Converters
GENERAL DESCRIPTION
The ML2340 and ML2350 are CMOS voltage output, 8-bit
D/A converters with an internal voltage reference and a µP
interface. These devices are designed to be powered by a
single supply, although they can be powered from dual
power supplies. The output voltage swings above zero
scale (V
ZS
) in the unipolar mode or around zero scale
(V
ZS
) in the bipolar mode, both with programmable gain.
V
ZS
can be set to any voltage from AGND to 2.25V below
V
CC
. The digital and analog grounds, DGND and AGND,
are totally independent of each other. DGND can be set to
any voltage from AGND to 4.5V below V
CC
for easy
interfacing to standard TTL and CMOS logic families.
The high level of integration and versatility of the ML2340
and ML2350 makes them ideal for a wide range of
applications in hard disk drives, automotive, telecom, and
a variety of general purpose industrial uses. One specific
intended application is controlling a hard disk voice coil.
The internal reference of the ML2340 provides a 2.25V or
4.50V output for use with A/D converters that use a single
5V ±10% power supply, while the ML2350 provide a
2.50V or 5.00V reference output.
FEATURES
s
Programmable output voltage gain settings of 2, 1,
1
/
2
,
1
/
4
provide 8-, 9-, 10-, or 11-bit effective resolution
around zero
AGND to V
CC
output voltage swing
Bipolar or unipolar output voltage
4.5V to 13.2V single supply or ±2.25V to ±6.5V
dual-supply operation
Transparent latch allows microprocessor interface
with 30ns setup time
Data flow-through mode
Voltage reference output
ML2340 ........................................... 2.25V or 4.50V
ML2350 ........................................... 2.50V or 5.00V
Nonlinearity .................................... ±
1
/
4
LSB or ±
1
/
2
LSB
Output voltage settling time over temperature and
supply voltage tolerance
Within 1V of V
CC
and AGND ................... 2.5µs max
Within 100mV of V
CC
and AGND ............... 5µs max
TTL and CMOS compatible digital inputs
Low supply current (5V supply) ..................... 5mA max
18-pin DIP or surface mount SOlC
s
s
s
s
s
s
s
s
s
s
s
BLOCK DIAGRAM
V
ZS
V
REFOUT
V
REF
V
CC
AGND
V
REFIN
8-BIT D/A
+
OP
AMP
V
OUT
DGND
RESISTORS
SWITCHES
DECODERS
DATA LATCH
XFER
DB0
(LSB)
DB7
(MSB)
GAIN 0
GAIN 1
* This Part Is Obsolete
** This Part Is End Of Life As Of August 1, 2000
1
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