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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11125 Datasheet

(MAX11120 - MAX11128) 4-/8-/16-Channel ADCs

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MAX11120–MAX11128
EVALUATION KIT AVAILABLE
1Msps, Low-Power, Serial 12-/10-/8-Bit,
4-/8-/16-Channel ADCs
General Description
The MAX11120–MAX11128 are 12-/10-/8-bit with external
reference and industry-leading 1.5MHz, full linear band-
width, high speed, low-power, serial output successive-
approximation register (SAR) analog-to-digital converters
(ADCs). The MAX11120–MAX11128 include both internal
and external clock modes. These devices feature scan
mode in both internal and external clock modes. The inter-
nal clock mode features internal averaging to increase
SNR. The external clock mode features the SampleSet™
technology, a user-programmable analog input channel
sequencer. The SampleSet approach provides greater
sequencing flexibility for multichannel applications while
alleviating significant microcontroller or DSP (controlling
unit) communication overhead.
The internal clock mode features an integrated FIFO
allowing data to be sampled at high speeds and then held
for readout at any time or at a lower clock rate. Internal
averaging is also supported in this mode improving SNR
for noisy input signals. The devices feature analog input
channels that can be configured to be single-ended
inputs, fully differential pairs, or pseudo-differential inputs
with respect to one common input. The MAX11120–
MAX11128 operate from a 2.35V to 3.6V supply and
consume only 5.4mW at 1Msps.
The MAX11120–MAX11128 include AutoShutdown™, fast
wake-up, and a high-speed 3-wire serial interface. The
devices feature full power-down mode for optimal power
management.
The 16MHz, 3-wire serial interface directly connects to
SPI, QSPI™, and MICROWIRE® devices without external
logic.
Excellent dynamic performance, low voltage, low power,
ease of use, and small package size make these convert-
ers ideal for portable battery-powered data-acquisition
applications, and for other applications that demand low
power consumption and small space.
The MAX11120–MAX11128 are available in 28-pin, 5mm
x 5mm, TQFN packages and operate over the -40°C to
+125°C temperature range.
SampleSet and AutoShutdown are trademarks of Maxim
Integrated Products, Inc.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
Benefits and Features
● Scan Modes, Internal Averaging, and Internal Clock
● 16-Entry First-In/First-Out (FIFO)
● SampleSet: User-Defined Channel Sequence with
Maximum Length of 256
● Analog Multiplexer with True Differential Track/Hold
• 16-/8-/4-Channel Single-Ended
8-/4-/2-Channel Fully-Differential Pairs
15-/8-/4-Channel Pseudo-Differential Relative to a
Common Input
● Two Software-Selectable Bipolar Input Ranges
• ±VREF+/2, ±VREF+
● Flexible Input Configuration Across All Channels
● High Accuracy
• ±1 LSB INL, ±1 LSB DNL, No Missing Codes
Over Temperature Range
● 70dB SINAD Guaranteed at 250kHz Input Frequency
● 1.5V to 3.6V Wide Range I/O Supply
• Allows the Serial Interface to Connect Directly to
1.8V, 2.5V, or 3.3V Digital Systems
● 2.35V to 3.6V Supply Voltage
● Longer Battery Life for Portable Applications
• Low Power
• 5.4mW at 1Msps with 3V Supplies
2μA Full-Shutdown Current
● External Differential Reference (1V to VDD)
● 16MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP-
Compatible Serial Interface
● Wide -40°C to +125°C Operation
● Space-Saving, 28-Pin, 5mm x 5mm TQFN Packages
● 1Msps Conversion Rate, No Pipeline Delay
● 12-/10-/8-Bit Resolution
● AECQ-100 Qualified Variant Available (MAX11128ATI/V+)
Applications
● High-Speed Data Acquisition Systems
● High-Speed Closed-Loop Systems
● Industrial Control Systems
● Medical Instrumentation
● Battery-Powered Instruments
● Portable Systems
Ordering Information appears at end of data sheet.
19-6148; Rev 4; 2/19


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11125 Datasheet

(MAX11120 - MAX11128) 4-/8-/16-Channel ADCs

No Preview Available !

MAX11120–MAX11128
1Msps, Low-Power, Serial 12-/10-/8-Bit,
4-/8-/16-Channel ADCs
Absolute Maximum Ratings
VDD to GND.............................................................-0.3V to +4V
OVDD, AIN0–AIN13, CNVST/AIN14, REF+, REF-/AIN15
to GND................ -0.3V to the lower of (VDD + 0.3V) and +4V
CS, SCLK, DIN, DOUT, EOC TO GND.......-0.3V to the Lower of
(VOVDD + 0.3V) and +4V
DGND to GND.......................................................-0.3V to +0.3V
Input/Output Current (all pins).............................................50mA
Continuous Power Dissipation (TA = +70°C)
TQFN (derate 34.4mW/°C above +70°C)..................2758mW
Operating Temperature Range.......................... -40°C to +125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
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)...........29°C/W
Junction-to-Case Thermal Resistance (θJC).................2°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 (MAX11122/MAX11125/MAX11128)
(VDD = 2.35V to 3.6V, VOVDD = 1.5V to 3.6V, fSAMPLE = 1Msps, fSCLK = 16MHz, 50% duty cycle, VREF+ = VDD, TA = -40°C to +125°C,
unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
DC ACCURACY (Notes 3 and 4)
Resolution
SYMBOL
RES 12 bit
CONDITIONS
Integral Nonlinearity
INL
MAX11128ATI/V+
Differential Nonlinearity
DNL No missing codes
Offset Error
Gain Error
(Note 5)
Offset Error Temperature
Coefficient
OETC
Gain Temperature Coefficient
Channel-to-Channel Offset
Matching
GETC
Line Rejection
PSR (Note 6)
DYNAMIC PERFORMANCE (250kHz, input sine wave) (Notes 3 and 7)
Signal-to-Noise Plus Distortion
SINAD
Signal-to-Noise Ratio
SNR
Total Harmonic Distortion
(Up to the 5th Harmonic)
THD
Spurious-Free Dynamic Range
SFDR
Intermodulation Distortion
IMD f1 = 249.878kHz, f2 = 219.97kHz
MIN
TYP
MAX UNITS
12 Bits
±1.0
±1.2
LSB
±1.0
LSB
0.7
±2.5
LSB
-0.5
±4.0
LSB
±2 ppm/°C
±0.8
ppm/°C
±0.5
LSB
±0.4
±1.5
LSB/V
70 72.5
70 72.6
dB
dB
-87 -78 dB
79 88
-85
dB
dB
www.maximintegrated.com
Maxim Integrated 2


Part Number MAX11125
Description (MAX11120 - MAX11128) 4-/8-/16-Channel ADCs
Maker Maxim Integrated Products
Total Page 30 Pages
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