19-1260; Rev 1; 9/02
+3V/+5V, 12-Bit, Serial, Multiplying DACs
in 10-Pin µMAX Package
_______________General Description
The MAX551/MAX552 are 12-bit, current-output, 4-quad-
rant multiplying digital-to-analog converters (DACs).
These devices are capable of providing unipolar or
bipolar outputs when operating from either a single +5V
(MAX551) or +3V (MAX552) power supply. An internal
power-on-reset circuit clears all DAC registers on
power-up, setting the DAC output voltage to 0V.
The SPI™/QSPI™ and MICROWIRE™-compatible 3-
wire serial interface saves board space and reduces
power dissipation compared with parallel-interface
devices. The MAX551/MAX552 feature double-buffered
interface logic with a 12-bit input register and a 12-bit
DAC register. Data in the DAC register sets the DAC
output voltage. Data is loaded into the input register
through the serial interface. The
LOAD
input transfers
data from the input register to the DAC register, updat-
ing the DAC output voltage.
The MAX551/MAX552 are available in an 8-pin DIP
package or a space-saving 10-pin µMAX package. The
µMAX package provides an asynchronous clear (CLR)
input that clears all DAC registers when pulled to GND,
setting the output voltage to 0V.
____________________________Features
o
Single-Supply Operation:
+4.5V to +5.25V (MAX551)
+2.7V to +3.6V (MAX552)
o
12.5MHz 3-Wire Serial Interface
o
SPI/QSPI and MICROWIRE Compatible
o
Power-On Reset Clears DAC Output to Zero
o
Asynchronous Clear Input Clears DAC Output
to Zero
o
Voltage Mode or Bipolar Mode Operation with
a Single Power Supply
o
Schmitt-Trigger Digital Inputs for Direct
Optocoupler Interface
o
0.4µA Supply Current
o
10-Pin µMAX Package
MAX551/MAX552
______________Ordering Information
PART
MAX551ACPA
MAX551BCPA
MAX551ACUB
MAX551BCUB
MAX551AEPA
MAX551BEPA
MAX551AEUB
MAX551BEUB
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 Plastic DIP
8 Plastic DIP
10 µMAX
10 µMAX
8 Plastic DIP
8 Plastic DIP
10 µMAX
10 µMAX
LINEARITY
(LSB)
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
________________________Applications
Automatic Calibration
Gain Adjustment
Transducer Drivers
Process-Control I/O Boards
Digitally Controlled Filters
Motion-Controlled Systems
µP-Controlled Systems
Programmable Amplifiers/Attenuators
Ordering Information continued at end of data sheet.
________________Functional Diagram
REF
R
FB
12-BIT
D/A CONVERTER
CLR*
LOAD
RFB
OUT
AGND*
V
DD
12-BIT
DAC REGISTER
POWER-ON
RESET
GND
_________________Pin Configurations
TOP VIEW
OUT
1
GND
2
V
DD
3
LOAD
4
8
RFB
7
REF
OUT
1
AGND
2
GND
3
6
SCLK
V
DD
4
5
DIN
LOAD
5
10
RFB
9
REF
MAX551
MAX552
MAX551
MAX552
8
CLR
7
SCLK
6
DIN
MAX551
MAX552
12-BIT
SHIFT REGISTER
*µMAX PACKAGE ONLY
DIN
SCLK
DIP
µMAX
SPI and QSPI are trademarks of Motorola Inc. MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
+3V/+5V, 12-Bit, Serial, Multiplying DACs
in 10-Pin µMAX Package
MAX551/MAX552
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND..............................................................................6V
REF, RFB to GND.................................................................±12V
Digital Inputs (SCLK, DIN,
LOAD, CLR)
to GND .....................................................................-0.3V to 6V
OUT to GND ...............................................-0.3V to (V
DD
+ 0.3V)
AGND to DGND ..................................................................±0.3V
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
µMAX (derate 5.60mW/°C above +70°C) .....................444mW
Operating Temperature Ranges
MAX55_ _C_ _......................................................0°C to +70°C
MAX55_ _E_ _ ...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
ELECTRICAL CHARACTERISTICS—MAX551
(V
DD
= +4.5V to +5.25V, V
REF
= 5V, OUT = AGND = GND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity
Differential Nonlinearity
Gain Error
Gain Tempco
(∆Gain/∆Temp)
Power-Supply Rejection
PSR
N
INL
DNL
Guaranteed monotonic over
temperature
Using internal feedback
resistor (R
FB
)
MAX551A
MAX551B
MAX551A
MAX551B
MAX551A
MAX551B
±0.2
12
±1/2
±1
±1/2
±1
±1
±2
±1
2
Bits
LSB
LSB
LSB
ppm/°C
ppm/%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Using internal feedback resistor (R
FB
)
(Note 2)
∆V
DD
= +5%, -10%
DYNAMIC PERFORMANCE
(Note 3)
T
A
= +25°C, to 1/2LSB, OUT load is
100Ω||13pF, DAC register alternately loaded
with 1s and 0s
V
REF
= 0V, OUT load is 100Ω||13pF, DAC
register alternately loaded with 1s and 0s
V
REF
= 5V
P-P
at 10kHz, DAC register loaded
with all 0s
THD
V
REF
= 6V
RMS
at 1kHz, DAC register loaded
with all 1s
10Hz to 100kHz, measured between RFB and
OUT
Current Settling Time
t
S
0.08
1
µs
Digital-to-Analog Glitch
0.65
20
nV-s
AC Feedthrough at OUT
0.3
1
mV
P-P
dB
Total Harmonic Distortion
-85
Output Noise-Voltage Density
13
15
nV/√Hz
2
_______________________________________________________________________________________
+3V/+5V, 12-Bit, Serial, Multiplying DACs
in 10-Pin µMAX Package
ELECTRICAL CHARACTERISTICS—MAX551 (continued)
(V
DD
= +4.5V to +5.25V, V
REF
= 5V, OUT = AGND = GND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER
REFERENCE INPUT
Input Resistance
Input Resistance Tempco
Reference -3dB Bandwidth
ANALOG OUTPUT
OUT Leakage Current
DAC register loaded
with all 0s
C
OUT
T
A
= +25°C
T
A
= T
MIN
to T
MAX
14
20
±0.15
±5
±25
20
30
nA
BW
V
OUT
= 0.31V
P-P
, R
L
= 50Ω, code = full-scale
R
REF
Measured between REF and OUT
7
11
6.5
725
15
kΩ
ppm/°C
kHz
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX551/MAX552
OUT Capacitance
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Hysteresis
Code = zero scale (Note 2)
Code = full scale (Note 2)
pF
V
IH
V
IL
HYST
LOAD, CLR,
DIN, and SCLK, V
DD
= 5V
CLR
SCLK,
LOAD,
DIN
V
CLR
= V
DD
V
CLR
= 0V
Inputs at 0V or V
DD
2.4
0.8
156
±1
18
100
±1
8
V
V
mV
Input Leakage Current
I
IN
µA
Input Capacitance
SWITCHING CHARACTERISTICS
SCLK Pulse Width High
SCLK Pulse Width Low
DIN Data to SCLK Setup
DIN Data to SCLK Hold
LOAD
Pulse Width
LSB SCLK to
LOAD
LOAD
High to SCLK
CLR
Pulse Width
POWER SUPPLY
Supply Voltage
Supply Current
C
IN
Inputs at 0V or V
DD
(Note 2)
pF
t
CH
t
CL
t
DS
t
DH
t
LD
t
SL
t
LC
t
CLR
25
25
15
15
20
0
15
20
ns
ns
ns
ns
ns
ns
ns
ns
V
DD
I
DD
All digital inputs at V
IL
or V
IH,
CLR
= V
DD
All digital inputs at 0V or V
DD,
CLR
= V
DD
4.50
0.5
0.4
5.25
1.5
5
V
mA
µA
_______________________________________________________________________________________
3
+3V/+5V, 12-Bit, Serial, Multiplying DACs
in 10-Pin µMAX Package
MAX551/MAX552
ELECTRICAL CHARACTERISTICS—MAX552
(V
DD
= +2.7V to +3.6V, V
REF
= 2.5V, OUT = AGND = GND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity
Differential Nonlinearity
Gain Error
Gain Tempco
(∆Gain/∆Temp)
Power-Supply Rejection
PSR
N
INL
DNL
Guaranteed monotonic over
temperature
Using internal feedback
resistor (R
FB
)
MAX552A
MAX552B
MAX552A
MAX552B
MAX552A
MAX552B
±0.3
12
±1/2
±1
±1/2
±1
±1
±2
±1
1
Bits
LSB
LSB
LSB
ppm/°C
ppm/%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Using internal feedback resistor (R
FB
)
(Note 2)
∆V
DD
= +20%, -10%
DYNAMIC PERFORMANCE
(Note 3)
Current Settling Time
t
S
T
A
= +25°C, to 1/2LSB, OUT load is
100Ω||13pF, DAC register alternately loaded
with 1s and 0s
V
REF
= 0V, OUT load is 100Ω||13pF, DAC
register alternately loaded with 1s and 0s
V
REF
= 3V
P-P
at 10kHz, DAC register loaded
with all 0s
THD
V
REF
= 6V
RMS
at 1kHz, DAC register loaded
with all 1s
10Hz to 100kHz, measured between RFB and
OUT
0.12
1
µs
Digital-to-Analog Glitch
AC Feedthrough at OUT
Total Harmonic Distortion
Output Noise-Voltage Density
REFERENCE INPUT
Input Resistance
Input Resistance Tempco
Reference -3dB Bandwidth
ANALOG OUTPUT
OUT Leakage Current
BW
R
REF
0.6
0.2
-85
13
20
0.6
nV-s
mV
P-P
dB
15
nV/√Hz
Measured between REF and OUT
V
OUT
= 0.31V
P-P
, R
L
= 50Ω, code = full-scale
7
11
7.5
725
15
kΩ
ppm/°C
kHz
DAC register loaded
with all 0s
T
A
= +25°C
T
A
= T
MIN
to T
MAX
±0.13
±5
nA
±25
OUT Capacitance
C
OUT
Code = zero code (Note 2)
Code = full scale (Note 2)
14
20
20
30
pF
4
_______________________________________________________________________________________
+3V/+5V, 12-Bit, Serial, Multiplying DACs
in 10-Pin µMAX Package
ELECTRICAL CHARACTERISTICS—MAX552 (continued)
(V
DD
= +2.7V to +3.6V, V
REF
= 2.5V, VOUT = AGND = GND, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Hysteresis
V
IH
V
IL
HYST
LOAD, CLR,
DIN, and SCLK, V
DD
= 3V
CLR
SCLK,
LOAD,
DIN
Input Capacitance
SWITCHING CHARACTERISTICS
SCLK Pulse Width High
SCLK Pulse Width Low
DIN Data to SCLK Setup
DIN Data to SCLK Hold
LOAD
Pulse Width
LSB SCLK to
LOAD
LOAD
High to SCLK
CLR
Pulse Width
POWER SUPPLY
Supply Voltage
Supply Current
V
DD
I
DD
All digital inputs at V
IL
or V
IH,
CLR
= V
DD
All digital inputs at 0V or V
DD,
CLR
= V
DD
2.7
0.1
0.07
3.6
0.5
5
V
mA
µA
t
CH
t
CL
t
DS
t
DH
t
LD
t
SL
t
LC
t
CLR
40
40
15
15
30
0
15
30
ns
ns
ns
ns
ns
ns
ns
ns
C
IN
V
CLR
= V
DD
V
CLR
= 0V
Inputs at 0V or V
DD
12
135
±1
75
±1
8
pF
µA
2.1
0.6
V
V
mV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX551/MAX552
Input Leakage Current
I
IN
Inputs at 0V or V
DD
(Note 2)
Note 1:
AGND and
CLR
are for µMAX only.
Note 2:
Guaranteed by design. Not subject to production testing.
Note 3:
Parametric limits are provided for design guidance, and are not production tested.
_______________________________________________________________________________________
5
京公网安备 11010802033920号
EEWORLD
