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PDF MAX5480 Data sheet ( Hoja de datos )
| Número de pieza | MAX5480 | |
| Descripción | 8-Bit Parallel DAC in QSOP-16 Package | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX5480 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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19-1300; Rev 0; 10/97
8-Bit Parallel DAC in
QSOP-16 Package
_______________General Description
The MAX5480 is a CMOS, 8-bit digital-to-analog con-
verter (DAC) that interfaces directly with most micro-
processors. On-chip input latches make the DAC load
cycle interface similar to a RAM write cycle, where CS
and WR are the only control inputs required.
Linearity of ±1/2LSB is guaranteed, and power con-
sumption is less than 500µW. Monotonicity is guaran-
teed over the full operating temperature range.
The MAX5480 can be operated in either voltage-output
or current-output mode. It is available in a small 16-pin
QSOP package.
________________________Applications
Digitally Adjusted Power Supplies
Programmable Gain
Automatic Test Equipment
Portable, Battery-Powered Instruments
VCO Frequency Control
RF Transmit Control in Portable Radios
____________________________Features
o QSOP-16 Package (same footprint as SO-8)
o Single +5V Supply Operation
o VOUT or IOUT Operation
o 8-Bit Parallel Interface
o Guaranteed Monotonic Over Temperature
o Low Power Consumption—100µA max
o ±1/2LSB Linearity Over Temperature
______________Ordering Information
PART
MAX5480ACEE
MAX5480BCEE
MAX5480AEEE
MAX5480BEEE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
16 QSOP
16 QSOP
16 QSOP
16 QSOP
ERROR
(LSB)
±1/2
±1/2
±1/2
±1/2
__________Typical Operating Circuit __________________Pin Configuration
VREF VDD
R1
2k
15
REF
DATA
INPUTS 4–11 D7–D0
14
16
VDD RFB
R2
1k
10pF
1
OUT1
12 CS MAX5480
13 WR
GND
3
OUT2
2
MAX4330
VOUT
R1 AND R2 USED ONLY IF GAIN
ADJUSTMENT IS REQUIRED.
TOP VIEW
OUT1 1
OUT2 2
GND 3
D7 (MSB) 4
D6 5
D5 6
D4 7
D3 8
MAX5480
QSOP
16 RFB
15 REF
14 VDD
13 WR
12 CS
11 D0 (LSB)
10 D1
9 D2
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
1 page  
Table 2. Unipolar Binary Code Table
DIGITAL INPUT
MSB
LSB
11111111
ANALOG OUTPUT
-VREF
255
256
10000001
-VREF
129
256
10000000
-VREF
128
256
=
− VREF
2
01111111
-VREF
127
256
00000001
-VREF
1
256
00000000
-VREF
0
256
=
0
( ) ( )NOTE : 1 LSB
=
2
−8
VREF
=
1
256
VREF
8-Bit Parallel DAC in
QSOP-16 Package
Table 3. Bipolar (Offset Binary) Code Table
DIGITAL INPUT
MSB
LSB
11111111
10000001
ANALOG OUTPUT
+VREF
127
128
+VREF
1
128
10000000
0
01111111
-VREF
1
128
00000001
-VREF
127
128
00000000
-VREF
128
128
( ) ( )NOTE : 1 LSB
=
2
−7
VREF
=
1
128
VREF
10kΩ
10kΩ
REF
10kΩ
20kΩ
S8
20kΩ
S7
20kΩ
S6
20kΩ
S1
20kΩ
CS
WR
D7 (MSB)
INTERFACE LOGIC
D6 D5
OUT2
OUT1
RFB
10kΩ
D0 (LSB)
Figure 3. MAX5480 Functional Diagram
tCS tCH VDD
CS
WR
DATA IN
(D7–D0)
tWR
tDS
tDH
VIH DATA IN
STABLE
VIL
0
VDD
0
VDD
0
NOTES:
1. FOR THE MAX5480, ALL INPUT SIGNAL RISE AND FALL TIMES ARE MEASURED
FROM 10% TO 90% OF VDD. VDD = +5V, tr = tf = 20ns.
2. TIMING MEASUREMENT REFERENCE LEVEL IS (VIH + VIL) / 2.
Figure 4. Write-Cycle Timing Diagram
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MAX5480.PDF ] | |
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