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MAX5121BEEE

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX5120/MAX5121 are low-power, 12-bit, voltage-
output digital-to-analog converters (DACs) with an inter-
nal precision bandgap reference and an output amplifier.
The MAX5120 operates on a +5V supply with an internal
amplifier reference of +2.5V and is capable of a +4.095V
full-scale output range. The MAX5121, operating on +3V,
delivers its +2.0475V full-scale output with an internal
precision reference of +1.25V. If necessary, the user can
override the internal, <10ppm/°C voltage reference with
an external reference. Both devices draw only 500µA of
supply current, which reduces to 3µA in power-down
mode. In addition, their power-up reset feature allows for
a user-selectable initial output state of either 0V or mid-
scale and minimizes output voltage glitches during
power-up.
The serial interface is compatible with SPI™, QSPI™
and MICROWIRE™, which makes the MAX5120/
MAX5121 suitable for cascading multiple devices. Each
DAC has a double-buffered input organized as an input
register followed by a DAC register. A 16-bit shift regis-
ter loads data into the input register. The DAC register
may be updated independently or simultaneously with
the input register.
Both devices are available in a 16-pin QSOP package
and are specified for the extended industrial (-40°C to
+85°C) temperature range. For pin-compatible 14-bit
upgrades, see the MAX5170/MAX5172 data sheet;
for pin-compatible 13-bit versions, see the MAX5130/
MAX5131 data sheet.
________________________Applications
Industrial Process Controls
Automatic Test Equipment (ATE)
Digital Offset and Gain Adjustment
Motion Control
µP-Controlled Systems
Features
♦ Single-Supply Operation
+5V (MAX5120)
+3V (MAX5121)
♦ Full-Scale Output Range
+4.095V (MAX5120)
+2.0475V (MAX5121)
♦ Built-In 10ppm/°C (max) Precision Bandgap
Reference
+2.5V (MAX5120)
+1.25V (MAX5121)
♦ Adjustable Output Offset
♦ SPI/QSPI/MICROWIRE-Compatible, 3-Wire Serial
Interface
♦ Pin-Programmable Shutdown Mode and Power-
Up Reset (0V or Midscale Output Voltage)
♦ Buffered Output Capable of Driving 5kΩ 100pF
or 4–20mA Loads
♦ Space-Saving 16-Pin QSOP Package
♦ Pin-Compatible 13-Bit Upgrades Available
(MAX5130/MAX5131)
♦ Pin-Compatible 14-Bit Upgrades Available
(MAX5170/MAX5172)
MAX5120/MAX5121
+3V/+5V, 12-Bit, Serial Voltage-Output DACs
with Internal Reference
________________________________________________________________
Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OS V
DD
REFADJ
REF
AGND
PD
UPO
DOUT
DGND
TOP VIEW
MAX5120
MAX5121
QSOP
OUT
RSTVAL
CS
PDL
CLR
DIN
SCLK
19-1428; Rev 0; 2/99
PART
MAX5120AEEE
MAX5120BEEE -40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-
PACKAGE
16 QSOP
16 QSOP
Pin Configuration
Ordering Information
INL
(LSB)
±0.5
±1
MAX5121AEEE
MAX5121BEEE
±1
-40°C to +85°C
-40°C to +85°C 16 QSOP
16 QSOP ±2
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
MAX5120/MAX5121
+3V/+5V, 12-Bit, Serial Voltage-Output DACs
with Internal Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX5120 (+5V)
(V
DD
= +5V ±10%, OS = AGND = DGND = 0V, 33nF capacitor at REFADJ, internal reference, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°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.
V
DD
to AGND, DGND...............................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
Digital Inputs to DGND.............................................-0.3V to +6V
Digital Outputs (DOUT, UPO) to DGND.....-0.3V to (V
DD
+ 0.3V)
OUT to AGND.............................................-0.3V to (V
DD
+ 0.3V)
OS to AGND ...................................(AGND - 4V) to (V
DD
+ 0.3V)
REF, REFADJ to AGND..............................-0.3V to (V
DD
+ 0.3V)
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70°C)
QSOP (derate 8.00mW/°C above +70°C).....................667mW
Operating Temperature Range ..........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
V
IN
= 0 or V
DD
MAX5120A
REFADJ = V
DD
4.5V ≤ V
DD
≤ 5.5V
MAX5120B
MAX5120B
MAX5120A
MAX5120A
Code = FFF hex, T
A
= +25°C
T
A
= +25°C
CONDITIONS
pF8C
IN
Input Capacitance
µA-1 0.001 1I
IN
Input Leakage Current
mV200V
HYS
Input Hysteresis
V0.8V
IL
Input Low Voltage
V3V
IH
Input High Voltage
µA3.3 7REFADJ Current
ppm/°C
10
TCV
REF
3
Output Voltage Temperature
Coefficient
V2.5V
REF
Output Voltage
-0.5 0.5
Bits12NResolution
µV/V20 250PSRRPower-Supply Rejection Ratio
ppm/°C
10 30
TCV
FS
310
Full-Scale Temperature
Coefficient (Note 3)
V4.0458 4.095 4.1442V
FS
Full-Scale Voltage
LSB-1 1DNLDifferential Nonlinearity
mV-10 10V
OS
Offset Error (Note 2)
-3 -0.2 3 mVGEGain Error
UNITSMIN TYP MAXSYMBOLPARAMETER
I
SINK
= 2mA
I
SOURCE
= 2mA
V0.13 0.4V
OL
Output Low Voltage
VV
DD
- 0.5V
OH
Output High Voltage
MAX5120B
LSB
-1 1
INLIntegral Nonlinearity (Note 1)
0 ≤ I
OUT
≤ 100µA (sourcing) µV/µA0.1 1V
OUT
/I
OUT
Reference External Load Regulation
mA4Reference Short-Circuit Current
STATIC PERFORMANCE
REFERENCE
DIGITAL INPUT
DIGITAL OUTPUTS
MAX5120/MAX5121
+3V/+5V, 12-Bit, Serial Voltage-Output DACs
with Internal Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX5120 (+5V) (continued)
(V
DD
= +5V ±10%, OS = AGND = DGND = 0V, 33nF capacitor at REFADJ, internal reference, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
To ±0.5LSB, V
STEP
= 4V
CS = V
DD
, f
SCLK
= 100kHz,
V
SCLK
= 5Vp-p
CONDITIONS
µA320I
SHDN
Power-Supply Current in Shutdown
µA500 600I
DD
Power-Supply Current (Note 5)
V4.5 5.5V
DD
Power-Supply Voltage (Note 5)
nV-s5Digital Feedthrough
ms2Time Required to Exit Shutdown
kΩ83 121R
OS
OS Input Resistance
µs20Output Settling Time
V0 to V
DD
Output Voltage Swing (Note 4)
UNITSMIN TYP MAXSYMBOLPARAMETER
ELECTRICAL CHARACTERISTICS—MAX5121 (+3V)
(V
DD
= +3V ±10%, OS = AGND = DGND = 0V, 33nF capacitor at REFADJ, internal reference, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
MAX5121A
REFADJ = V
DD
2.7V ≤ V
DD
≤ 3.3V
MAX5121B
MAX5121B
MAX5121A
MAX5121A
Data = FFF hex, T
A
= +25°C
T
A
= +25°C
CONDITIONS
mV200V
HYS
Input Hysteresis
V0.8V
IL
Input Low Voltage
V2.2V
IH
Input High Voltage
µA3.3 7REFADJ Current
mA4Reference Short-Circuit Current
ppm/°C
10
TCV
REF
MAX5121B
3
0 ≤ I
OUT
≤ 100µA (sourcing)
Output Voltage Temperature
Coefficient
V1.25V
REF
Output Voltage
-1 1
µV/µA0.1 1
Bits12NResolution
µV/V20 250PSRRPower-Supply Rejection Ratio
ppm/°C
10 30
TCV
FS
LSB
310
V
OUT
/I
OUT
Full-Scale Temperature
Coefficient (Note 3)
V2.0229 2.0475 2.0721V
FS
Full-Scale Voltage
LSB-1 1DNLDifferential Nonlinearity
mV-10 10V
OS
Offset Error (Note 2)
-5 -0.2 5
Reference External Load Regulation
mVGEGain Error
UNITSMIN TYP MAXSYMBOLPARAMETER
-2 2
INLIntegral Nonlinearity (Note 1)
V/µs0.6SRVoltage Output Slew Rate
DYNAMIC PERFORMANCE
POWER REQUIREMENTS
STATIC PERFORMANCE
REFERENCE
DIGITAL INPUT
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MAX5121BEEE

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Buy MAX5121BEEE
Manufacturer:
Maxim Integrated
Description:
Digital to Analog Converters - DAC +3V/+5V, 12-Bit, Serial, Voltage-Output DACs with Internal Reference
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