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PDF ML2350 Data sheet ( Hoja de datos )
| Número de pieza | ML2350 | |
| Descripción | Programmable 8-Bit D/A Converters | |
| Fabricantes | Micro Linear | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ML2350 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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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
VREFOUT
VZS
VREF
VCC
AGND
VREFIN
DGND
8-BIT D/A
DATA LATCH
DB0
XFER (LSB)
DB7
(MSB)
–
OP
AMP
+
VOUT
RESISTORS
SWITCHES
DECODERS
GAIN 0 GAIN 1
* This Part Is Obsolete
** This Part Is End Of Life As Of August 1, 2000
1 http://www.Datasheet4U.com/
1 page  
ML2340, ML2350
ELECTRICAL CHARACTERISTICS (Continued)
ML2340XCX, ML2350XCX
PARAMETER
NOTES
CONDITIONS
MIN
TYP MAX
Digital and DC
VIN(0) Logical “0”
Input Voltage
0.8
VIN(1) Logical “1”
Input Voltage
2.0
IIN(0) Logical “0”
Input Current
VIN = DGND
–1
IIN(1) Logical “1”
Input Current
VIN = VCC
1
Supply Current,
Bipolar Mode
ICC, VCC Current
IAGND,
Analog Ground Current
IVZS, VZS Current
ICC, VCC Current
IAGND,
Analog Ground Current
IVZS, VZS Current
Supply Current,
Unipolar Mode
ICC, VCC Current
IAGND,
Analog Ground Current
IVZS, VZS Current
ICC, VCC Current
IAGND,
Analog Ground Current
IVZS, VZS Current
AC Performance
VCC = 5V ± 10%
VCC = 12V ± 10%
3 VCC = 5V ± 10%
VCC = 12V ±10%
3
5.3
–5.0
–90 –300
9.3
–9.0
–90 –300
6.0
–4.3
–1.7
11.0
–7.3
–3.7
Settling Time
tS1
tS2
tS3
tS4, Gain Change
tXFER, XFER Pulse Width
tDBS, DB0–DB7
Setup Time
Figure 2,
Output Step of AGND + 1V
to VCC – 1V, RL = 1kW
Output Step of
AGND + 100mV to
VCC – 100mV, RL = 100kW
Output Step of ±1LSB
Change of Any Gain Setting
Figure 3
Figure 3
60
40
1.2 2.5
2.5 5
1
1.1 2.5
tDBH, DB0–DB7
Hold Time
Figure 3
0
tRESET, Power-On
Reset Time
16
ML2350XIX
MIN TYP MAX
UNITS
0.8 V
2.0 V
–1 µA
1 µA
5.3 mA
–5.0
–90 –300
mA
µA
9.3 mA
–9.0
–90 –300
mA
µA
6.0 mA
–4.3 mA
–1.7 mA
11.0 mA
–7.3 mA
–3.7 mA
1.2 3.0
2.5 6
µs
µs
1
1.1
60
45
0
16
µs
µs
ns
ns
ns
µs
Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
Note 2: Supply current and analog ground current are specified with the digital inputs stable and no load on VOUT.
Note 3: In unipolar operation with VZS and AGND tied together, digital codes that represent an analog value of less than 100mV from AGND should be avoided.
5 http://www.Datasheet4U.com/
5 Page 
PHYSICAL DIMENSIONS inches (millimeters)
ML2340, ML2350
0.045 MIN
(1.14 MIN)
(4 PLACES)
0.170 MAX
(4.32 MAX)
Package: P18
18-Pin PDIP
0.890 - 0.910
(22.60 - 23.12)
18
PIN 1 ID
0.240 - 0.260 0.295 - 0.325
(6.09 - 6.61) (7.49 - 8.26)
1
0.050 - 0.065
(1.27 - 1.65)
0.100 BSC
(2.54 BSC)
0.015 MIN
(0.38 MIN)
0.125 MIN
(3.18 MIN)
0.016 - 0.022
(0.40 - 0.56)
SEATING PLANE
0º - 15º
0.008 - 0.012
(0.20 - 0.31)
0.449 - 0.463
(11.40 - 11.76)
18
Package: S18
18-Pin SOIC
PIN 1 ID
0.291 - 0.301 0.398 - 0.412
(7.39 - 7.65) (10.11 - 10.47)
0.024 - 0.034
(0.61 - 0.86)
(4 PLACES)
1
0.090 - 0.094
(2.28 - 2.39)
0.050 BSC
(1.27 BSC)
0.095 - 0.107
(2.41 - 2.72)
0º - 8º
0.012 - 0.020
(0.30 - 0.51)
SEATING PLANE
0.005 - 0.013
(0.13 - 0.33)
0.022 - 0.042
(0.56 - 1.07)
0.009 - 0.013
(0.22 - 0.33)
11 http://www.Datasheet4U.com/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ML2350.PDF ] | |
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