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ML2340 Folha de dados(PDF) 1 Page - Micro Linear Corporation

Nome de Peças ML2340
Descrição Electrónicos  Single Supply, Programmable 8-Bit D/A Converters
Download  12 Pages
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Fabricante Electrônico  MICRO-LINEAR [Micro Linear Corporation]
Página de início  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML2340 Folha de dados(HTML) 1 Page - Micro Linear Corporation

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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 (VZS) in the unipolar mode or around zero scale
(VZS) in the bipolar mode, both with programmable gain.
VZS can be set to any voltage from AGND to 2.25V below
VCC. 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 VCC 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
s
AGND to VCC output voltage swing
s
Bipolar or unipolar output voltage
s
4.5V to 13.2V single supply or ±2.25V to ±6.5V
dual-supply operation
s
Transparent latch allows microprocessor interface
with 30ns setup time
s
Data flow-through mode
s
Voltage reference output
ML2340 ........................................... 2.25V or 4.50V
ML2350 ........................................... 2.50V or 5.00V
s
Nonlinearity .................................... ±1/4 LSB or ±1/2 LSB
s
Output voltage settling time over temperature and
supply voltage tolerance
Within 1V of VCC and AGND ................... 2.5µs max
Within 100mV of VCC and AGND ............... 5µs max
s
TTL and CMOS compatible digital inputs
s
Low supply current (5V supply) ..................... 5mA max
s
18-pin DIP or surface mount SOlC
BLOCK DIAGRAM
OP
AMP
RESISTORS
SWITCHES
DECODERS
8-BIT D/A
DATA LATCH
VREF
VREFOUT
VREFIN
DGND
VZS
VCC
AGND
+
VOUT
DB0
(LSB)
DB7
(MSB)
XFER
GAIN 0
GAIN 1
* This Part Is Obsolete
** This Part Is End Of Life As Of August 1, 2000


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