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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11960 Datasheet

Differential SAR ADC

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MAX11960
EVALUATION KIT AVAILABLE
Dual Simultaneous Sampling, 20-Bit, 1Msps,
Differential SAR ADC
General Description
The MAX11960 is a 20-bit, 1Msps, dual simultaneous
sampling, fully differential SAR ADC with internal reference
buffers. The MAX11960 provides excellent static and
dynamic performance with best-in-class power consumption
that directly scales with throughput. The device has a
unipolar differential ±VREF input range. Supplies include
a 3.3V supply for the reference buffers, a 1.8V analog
supply, a 1.8V digital supply, and a 1.5V to 3.6V digital
interface supply.
This ADC achieves 99dB SNR and -123dB THD, guarantees
20-bit resolution with no-missing codes and 5 LSB INL (max).
The MAX11960 communicates data using a SPI-
compatible serial interface. The MAX11960 is offered in a
32-pin, 5mm x 5mm, TQFN package and is specified over
the -40°C to +85°C operating temperature range.
Applications
● Encoder and Resolver in Motion Control
● Automatic Test Equipment
● Medical Instrumentation
● Process Control and Industrial Automation
● Data Acquisition Systems
● Telecommunications
● Redundant Measurement
Benefits and Features
● 20-Bit Resolution with No Missing Codes
● 1Msps Throughput with No Pipeline Delay
● 18mW at 1Msps, Ultra-Low Power Consumption
● ±1.5LSB INL, Over Temperature
● ±1 LSB DNL Maximum at 20 Bits
● 99dB SNR at fIN = 10kHz
● 99dB SINAD at fIN = 10kHz
● -123dB THD at fIN = 10kHz
● ±VREF Unipolar Differential Analog Input Range
● VREF = 2.5V to 3.6V
● Integrated Reference Buffers
● 1.8V Analog and Digital Core Supply
● 3.3V REFVDD Reference Buffer Supply
● 1.5V to 3.6V Digital Interface Supply
● Serial Interface SPI/QSPIK/MICROWIREM/DSP-
Compatible
● -40°C to +85°C Operation*
● 32-Pin, 5mm x 5mm, TQFN Package
*Contact Maxim Integrated for extended temperature
range.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
Ordering Information and Selector Guide appear at end of
data sheet.
19-8528; Rev 1; 11/16


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11960 Datasheet

Differential SAR ADC

No Preview Available !

MAX11960
Dual Simultaneous Sampling, 20-Bit, 1Msps,
Differential SAR ADC
Absolute Maximum Ratings
REFVDD, REF1_, REF2_, REFIN to REFGND.......-0.3V to +4V
Maximum Current into Any Pin...........................................50mA
OVDD to DGND.......................................................-0.3V to +4V
AVDD, DVDD to AGND............................................-0.3V to +2V
Continuous Power Dissipation (TA = +70°C)
TQFN (derate 35.7mW/°C above +70°C)...............2857.1mW
DGND, REFGND, AGND......................................-0.3V to +0.3V
Operating Temperature Range............................ -40°C to +85°C
AIN_+, AIN_- to AGND.-0.3V to the lower of (VREF + 0.3V) and
+4V or ±130mA
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
SCLK, DIN_, DOUT_, CNVST_, to DGND...................................
Lead Temperature (soldering, 10s).................................. +300°C
............................-0.3V to the lower of (VOVDD + 0.3V) and +4V
Soldering Temperature (reflow)........................................+260°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.
Package Thermal Characteristics (Note 1)
TQFN
Junction-to-Ambient Thermal Resistance (θJA)...........28°C/W
Junction-to-Case Thermal Resistance (θJC) ............. 1.4°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(fSAMPLE = 1Msps, VAVDD = 1.8V, VDVDD = 1.8V, VOVDD = 1.5V to 3.6V, VREFVDD = 3.6V, VREF = 3.3V, Internal Ref Buffers On,
TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
ANALOG INPUT
Input Voltage Range (Note 3)
Absolute Input Voltage Range
SYMBOL
CONDITIONS
(AIN_+) - (AIN_-)
AIN_+, AIN_- relative to AGND
Common-Mode Input Range
Input Leakage Current
Input Capacitance
STATIC PERFORMANCE (Note 4)
Resolution
N
Resolution
LSB
No Missing Codes
Offset Error (Note 4)
Offset Temperature Coefficient
Gain Error
Gain Error Temperature
Coefficient (Note 5)
Gain Error
Gain Error Temperature
Coefficient (Note 5)
Integral Nonlinearity
INL
[(AIN_+) + (AIN_-)]/2
Acquisition phase
VREF = 3.3V
Referred to REFIN reference input
Referred to REFIN reference input
Referred to REF1 or REF2 pins
Referred to REF1 or REF2 pins
MIN
TYP
MAX UNITS
-VREF
-0.1
VREF/2 -
0.1
-1
VREF/2
0.001
32
+VREF
VREF +
0.1
VREF/2
+ 0.1
+1
V
V
V
µA
pF
20
20
-15
-175
-50
-5
6.3
±1
±0.1
±20
±0.2
±10
±0.12
±1.5
+15
+175
+50
+5
Bits
µV
Bits
LSB
LSB/°C
LSB
LSB/°C
LSB
LSB/°C
LSB
www.maximintegrated.com
Maxim Integrated 2


Part Number MAX11960
Description Differential SAR ADC
Maker Maxim Integrated
Total Page 30 Pages
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