Rainbow Electronics MAX5480 User Manual
_______________General Description
The MAX5480 is a CMOS, 8-bit digital-to-analog converter (DAC) that interfaces directly with most microprocessors. 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 consumption is less than 500µW. Monotonicity is guaranteed 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
♦ QSOP-16 Package (same footprint as SO-8)
♦ Single +5V Supply Operation
♦ V
OUT
or I
OUT
Operation
♦ 8-Bit Parallel Interface
♦ Guaranteed Monotonic Over Temperature
♦ Low Power Consumption—100µA max
♦ ±1/2LSB Linearity Over Temperature
MAX5480
8-Bit Parallel DAC in
QSOP-16 Package
________________________________________________________________
Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OUT1 RFB
REF
V
DD
WR
CS
D0 (LSB)
D1
D2
TOP VIEW
MAX5480
QSOP
OUT2
GND
D5
D7 (MSB)
D6
D4
D3
__________________Pin Configuration
MAX5480
10pF
V
OUT
16
14
15
V
REFVDD
R2
1k
R1
2k
D7–D0
CS
OUT1
12
DATA
INPUTS
4–11
13
OUT2
1
2
WR
R1 AND R2 USED ONLY IF GAIN
ADJUSTMENT IS REQUIRED.
REF
RFB
GND
3
V
DD
MAX4330
__________Typical Operating Circuit
19-1300; Rev 0; 10/97
PART
MAX5480ACEE
MAX5480BCEE 0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-
PACKAGE
16 QSOP
16 QSOP
______________Ordering Information
ERROR
(LSB)
±1/2
±1/2
MAX5480AEEE
MAX5480BEEE -40°C to +85°C
-40°C to +85°C 16 QSOP
16 QSOP
±1/2
±1/2
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.
MAX5480
8-Bit Parallel DAC in
QSOP-16 Package
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= +5V, V
REF
= +10V, V
OUT1
= V
OUT2
= 0V, Circuit of Figure 1, TA= T
MIN
to T
MAX
, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDDto GND............................................................-0.3V to +17V
REF to GND .........................................................................±25V
RFB to GND.........................................................................±25V
Digital Inputs to GND .................................-0.3V to (V
DD
+ 0.3V)
OUT1, OUT2 to GND................................................-0.3V to V
DD
Operating Temperature Ranges
MAX5480_CEE....................................................0°C to +70°C
MAX5480_EEE.................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Continuous Power Dissipation (T
A
= +70°C)
MAX5480_ _EE (derate 8.3mW/°C above +70°C) ........667mW
Lead Temperature (soldering 10sec)..............................+300°C
pin 15 to GND
All grades guaranteed monotonic over temperature
TA= T
MIN
to T
MAX
CONDITIONS
400
LSB±1/2INLRelative Accuracy
Bits8Resolution
kΩ5 10 20R
REF
Input Resistance
%FSR/%
0.01 0.16
0.002 0.08
LSB±1DNLDifferential Nonlinearity
LSB±1Gain Error (Note 1)
ppm/°C±2
Gain Temperature
Coefficient (Note 2)
UNITSMIN TYP MAXSYMBOLPARAMETER
TA= +25°C
TA= T
MIN
to T
MAX
V
REF
= ±10V
DAC code = full scale
TA= T
MIN
to T
MAX
nA
±400
Output Leakage Current
(I
OUT1
)
±50TA= +25°C
V
REF
= ±10V
DAC code = zero scale
TA= T
MIN
to T
MAX
nA
±400
Output Leakage Current
(I
OUT2
)
±50TA= +25°C
D0–D7 = 0V to
VDDor VDDto 0V,
WR = CS = 0V,
OUT1 load =
100Ω
|| 13pF
500
Output Current Settling Time
to 1/2LSB
MAX5480A
(Note 3)
TA= T
MIN
to T
MAX
MAX5480B
0.01
PSRSupply Rejection
0.002TA= +25°C
ns
250
TA= T
MIN
to T
MAX
TA= +25°C
TA= +25°C
MAX5480A
(Note 3)
MAX5480B
MAX5480A
(Note 3)
MAX5480B
TA= T
MIN
to T
MAX
ns
TA= +25°C
TA= +25°C
V
REF
= ±10V,
100kHz sine
wave,
WR = CS = 0V
0.5
AC Feedthrough
(OUT1 or OUT2)
0.1
0.25
D0–D7 = VDD, WR = CS = 0V
D0–D7 = 0V, WR = CS = 0V
120
30
pFC
OUT1
OUT1 Capacitance (Note 3)
D0–D7 = VDD, WR = CS = 0V
D0–D7 = 0V, WR = CS = 0V
30
120
pFC
OUT2
OUT2 Capacitance (Note 3)
DC ACCURACY
REFERENCE INPUT
DYNAMIC PERFORMANCE
ANALOG OUTPUTS
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