MAX11339ATJ+ Maxim Integrated, MAX11339ATJ+ Datasheet

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MAX11339ATJ+

Manufacturer Part Number
MAX11339ATJ+
Description
Analog to Digital Converters - ADC 10-Bit 8Ch 500ksps SAR ADC
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX11339ATJ+

Rohs
yes
Number Of Channels
8
Architecture
SAR
Conversion Rate
500 kSPs
Resolution
10 bit
Input Type
Single-Ended/Differential
Snr
61.5 dB
Interface Type
3-Wire Serial, Microwire, QSPI, SPI
Operating Supply Voltage
3 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
TQFN-EP-32
Maximum Power Dissipation
2758 mW
Minimum Operating Temperature
- 40 C
Voltage Reference
2.35 V to 3.6 V
The MAX11335–MAX11340 are 12-/10-bit with external
reference and 500kHz, full-linear-bandwidth, high-speed,
low-power,
ister (SAR) analog-to-digital converters (ADCs). The
MAX11335–MAX11340 provide external access to the
output of the integrated mux and ADC input, to simplify
conditioning. The MAX11335–MAX11340 include both
internal and external clock modes.
scan mode in both internal and external clock modes. The
internal clock mode features internal averaging
SNR. The external clock mode features the SampleSetK
technology, a user-programmable analog input channel
sequencer.
sequencing flexibility for multichannel applications while
alleviating significant microcontroller or DSP (controlling
unit) communication overhead.
External pins provide access to the output of the
multiplexer and ADC inputs to simplify multichannel sig-
nal conditioning. The internal clock mode features an inte-
grated 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 internal clock
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.
MAX11335–MAX11340
ply and consume only 4.2mW at 500ksps.
The MAX11335–MAX11340 include
fast wake-up, and a high-speed 3-wire serial interface.
The devices feature full power-down mode for optimal
power management.
directly connects to SPI, QSPIK, 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 MAX11335–MAX11340 are available in 32-pin, 5mm
x 5mm, TQFN packages and operate over the -40NC to
+125NC temperature range.
SampleSet and AutoShutdown are trademarks
Integrated Products, Inc.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor
Corp.
Ordering Information
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
500ksps, 12-/10-Bit, 4-/8-/16-Channel ADCs with
serial-output successive approximation reg-
The
Post-Mux External Signal Conditioning Access
SampleSet
appears at end of data sheet.
The
operate from a 2.35V to 3.6V sup-
General Description
8MHz,
approach provides greater
3-wire serial interface
These devices feature
AutoShutdownK,
of Maxim
to increase
The
M
S Scan Modes, Internal Averaging, and Internal Clock
S 16-Entry First-In/First-Out (FIFO)
S SampleSet: User-Defined Channel Sequence with
S Input Pins
S Analog Multiplexer with True Differential
S Externally Accessible Multiplex Output and
S Two Software-Selectable Bipolar Input Ranges
S Flexible Input Configuration Across All Channels
S High Accuracy
S 70dB SINAD Guaranteed at 100kHz Input
S 1.5V to 3.6V Digital I/O Supply Voltage
S 2.35V to 3.6V Supply Voltage
S Extended Battery Life for Portable Applications
S External Differential Reference (1V to V
S 8MHz, 3-Wire SPI-/QSPI-/MICROWIRE-/DSP-
S Wide -40NC to +125NC Operation
S Space-Saving, 32-Pin, 5mm x 5mm TQFN Packages
S 500ksps Conversion Rate, No Pipeline Delay
For related parts and recommended products to use with this part,
refer to
Maximum Length of 256
Any Combination of Single-Ended, Differential
Track/Hold
 16-/8-/4-Channel Single-Ended
 8-Channel Fully-Differential Pairs
 15-/8-/4-Channel Pseudo-Differential Relative to
ADC Input
 QV
 Q1 LSB INL, Q1 LSB DNL, No Missing Codes
Frequency
 4.2mW at 500ksps with 3V Supplies
 2µA Full-Shutdown Current
Compatible Serial Interface
and Pseudo-Differential Pairs Allowed
MAX11335–MAX11340
a Common Input
www.maximintegrated.com/MAX11335-MAX11340.related.
High-Speed Data Acquisition Systems
High-Speed Closed-Loop Systems
Industrial Control Systems
Medical Instrumentation
Battery-Powered Instruments
Portable Systems
REF+
/2, QV
REF+
Benefits and Features
EVALUATION KIT AVAILABLE
Applications
19-6468; Rev 0; 9/12
DD
)

Related parts for MAX11339ATJ+

MAX11339ATJ+ Summary of contents

Page 1

ADCs with Post-Mux External Signal Conditioning Access General Description The MAX11335–MAX11340 are 12-/10-bit with external reference and 500kHz, full-linear-bandwidth, high-speed, low-power, serial-output successive approximation reg- ister (SAR) analog-to-digital converters (ADCs). The MAX11335–MAX11340 provide external access to the ...

Page 2

... Signal-to-Noise Plus Distortion Signal-to-Noise Ratio Total Harmonic Distortion (Up to the 5th Harmonic) Spurious-Free Dynamic Range Intermodulation Distortion Full-Power Bandwidth Full-Linear Bandwidth Maxim Integrated Continuous Power Dissipation (T TQFN (derate 34.4mW/NC above +70NC)..................2758mW Operating Temperature Range ........................ -40NC to +125NC Junction Temperature .....................................................+150NC (V + 0.3V) and +4V DD Storage Temperature Range ...

Page 3

... EXTERNAL REFERENCE INPUT REF- Input Voltage Range REF+ Input Voltage Range REF+ Input Current DIGITAL INPUTS (SCLK, DIN, CS, CNVST) Input Voltage Low Input Voltage High Input Hysteresis Maxim Integrated MAX11335–MAX11340 = 500ksps 8MHz, 50% duty cycle, V SAMPLE SCLK = +25NC.) (Note 2) A SYMBOL CONDITIONS -0 ...

Page 4

... SCLK Duty Cycle SCLK Fall to DOUT Transition 16th SCLK Fall to DOUT Disable 14th SCLK Fall to DOUT Disable SCLK Fall to DOUT Enable DIN to SCLK Rise Setup SCLK Rise to DIN Hold Maxim Integrated MAX11335–MAX11340 = 500ksps 8MHz, 50% duty cycle, V SAMPLE SCLK = +25NC.) (Note 2) ...

Page 5

... DYNAMIC PERFORMANCE (100kHz, Input Sine Wave) (Notes 3 and 7) Signal-to-Noise Plus Distortion Signal-to-Noise Ratio Total Harmonic Distortion (Up to the 5th Harmonic) Spurious-Free Dynamic Range Intermodulation Distortion Full-Power Bandwidth Full-Linear Bandwidth Maxim Integrated = 500ksps 8MHz, 50% duty cycle, V SAMPLE SCLK = +25NC.) (Note 2) A SYMBOL CONDITIONS ...

Page 6

... Static Input Leakage Current Input Capacitance EXTERNAL REFERENCE INPUT REF- Input Voltage Range REF+ Input Voltage Range REF+ Input Current DIGITAL INPUTS (SCLK, DIN, CS, CNVST) Input Voltage Low Input Voltage High Maxim Integrated = 500ksps 8MHz, 50% duty cycle, V SAMPLE SCLK = +25NC.) (Note 2) A SYMBOL CONDITIONS -0 ...

Page 7

... TIMING CHARACTERISTICS (Figure 1) (Note 11) SCLK Clock Period SCLK Duty Cycle SCLK Fall to DOUT Transition 16th SCLK Fall to DOUT Disable 14th SCLK Fall to DOUT Disable SCLK Fall to DOUT Enable DIN to SCLK Rise Setup Maxim Integrated = 500ksps 8MHz, 50% duty cycle, V SAMPLE SCLK = +25NC.) (Note 2) A SYMBOL ...

Page 8

... Figure 3 (Equivalent Input Circuit). Note 11: Guaranteed by characterization CSS 1ST SCLK CLOCK DIN t DOE DOUT Figure 1. Detailed Serial-Interface Timing Diagram Maxim Integrated = 500ksps 8MHz, 50% duty cycle, V SAMPLE SCLK = +25NC.) (Note 2) A SYMBOL CONDITIONS CSS t CSH t See Figure 6 CSW ...

Page 9

... TEMPERATURE (°C) THD vs. ANALOG INPUT FREQUENCY - 500ksps SAMPLE -85 - (kHz) IN Maxim Integrated Typical Operating Characteristics = +25°C, unless otherwise noted.) A DIFFERENTIAL NONLINEARITY vs. OUTPUT CODE 1 500ksps SAMPLE 0.5 0 -0.5 -1.0 4096 0 1024 2048 DIGITAL OUTPUT CODE (DECIMAL) HISTOGRAM FOR 30,000 CONVERSIONS ...

Page 10

... SAMPLE V = 3.0V DD 2.0 1.5 1.0 0.5 -40 -25 - TEMPERATURE (°C) Maxim Integrated Typical Operating Characteristics (continued) = +25°C, unless otherwise noted.) A SINAD vs. INPUT RESISTANCE 500ksps SAMPLE f = 100kHz IN AOP SHORTED TO AIP AON SHORTED TO AIN 72 BUFFER BETWEEN AOP AND AIP 71 BUFFER BETWEEN AON AND AIN ...

Page 11

... Post-Mux External Signal Conditioning Access TOP VIEW DGND 25 OVDD 26 27 DOUT 28 EOC MAX11335 29 AIN0 MAX11338 AIN1 30 31 AIN2 + 32 AIN3 CHANNEL Maxim Integrated REF- 15 CNVST 14 AIN AIP 13 12 AON 11 AOP 10 GND 9 GND TQFN 24 23 ...

Page 12

... Maxim Integrated MAX11337 MAX11340 NAME (16 CHANNEL) 17, 19 GND Ground 11 AOP Positive Output from the Multiplexer 12 AON Negative Output from the Multiplexer 13 AIP Positive Input to the ADC ...

Page 13

... ADCs with Post-Mux External Signal Conditioning Access AIN0 AIN1 AIN2 AIN3 AIN(N-1) AIN(N) Maxim Integrated HIGH-INPUT IMPEDANCE PGA/FILTER/BUFFER AOP AON AIN AIP SINGLE- ENDED/ OSCILLATOR DIFFERENTIAL BUS I/P MUX MAX11335–MAX11340 MAX11335–MAX11340 Functional Diagrams REF+ REF- REF+ REF- ...

Page 14

... The MAX11335–MAX11340 include internal clock. The internal clock mode features an integrated FIFO, allowing data to be sampled at high speed and then held for read- out at any time lower clock rate. Internal averaging Maxim Integrated AOP AON AIN AIP ...

Page 15

... DOUT Ch[3] Ch[2] Ch[1] Ch[0] Figure 2b. External Clock Mode Timing Diagram with CHAN_ID=1 for Best Performance Maxim Integrated MAX11335–MAX11340 mode to generate the serial clock signal. Select the SCLK frequency of 8MHz or less, and set clock polarity (CPOL) and phase (CPHA) in the control registers to the same value. The MAX11335– ...

Page 16

... DC signal applied to the REF-/AIN15. Fully Differential Reference (REF+, REF-) When the reference is used in fully differential mode (REFSEL = 1), the full-scale range is set by the difference between REF+ and REF-. The output code reaches its Maxim Integrated ...

Page 17

... Table 3. See the Applications Information more detail on programming modes. Maxim Integrated OUTPUT CODE (hex -1.5 LSB Figure 5. Bipolar Transfer Function for 12-Bit Resolution Apply a soft reset when changing from internal to exter- nal clock mode: RESET [1:0] = 10. The MAX11335– ...

Page 18

... RESULTS STORED IN FIFO Figure 6. Internal Conversions with CNVST CS EOC SCLK 1 SET MODE REG DIN DOUT MODE CONTROL Figure 7. Internal Conversions with SWCNV Maxim Integrated 1 SET MODE REG READ DATA FROM FIFO INTERNALLY CLOCKED ACQUISITIONS AND CONVERSIONS 17 SWCNV = 1 INTERNAL OSCILLATOR ON SCAN OPERATION AND RESULTS STORED IN FIFO MAX11335– ...

Page 19

... The manual mode works with the external clock only. The FIFO is unused. CS DIN DOUT Figure 8. Echo Back the Configuration Data Maxim Integrated Repeat scanning channel N for number of times and (Table 2). For proper store all the conversion results in the FIFO. The number of scans is programmed in the ADC Configuration register. ...

Page 20

... T S Figure 9. SampleSet Use-Model Example Maxim Integrated the ADC allowing both high- and low-frequency inputs to be converted appropriately without interface activity. With the unique sequence loaded into ADC memory, the pattern may be repeated indefinitely or changed at any time. For example, the maximum throughput of MAX11335– ...

Page 21

... CHSEL[3:0] 10:7 0000 RESET[1:0] 6:5 Maxim Integrated When the Unipolar or Bipolar registers are configured as pseudo-differential or fully differential, the analog input pairs are repeated in this automated mode. For example set scan all 16 channels and all analog input pairs are configured for fully-differential conversion, the ADC converts the channels twice ...

Page 22

... Maxim Integrated Power Management Modes (Table 5). In external clock mode, PM[1:0] selects 00 between normal mode and various power-down modes of operation. External Clock Mode. Channel address is always present in internal clock mode. 0 Set to 1, DOUT is a 16-bit data word containing a 4-bit channel address, followed by a 12-bit conversion result led by the MSB ...

Page 23

... Maxim Integrated MODE NAME Scans channels 0 through N Clock mode: External clock only 0 Standard_Ext Channel scan/sequence: N channels in ascending order Channel selection: See Table 4, CHSEL[3:0] determines channel N Averaging: No Scans channel N through the highest numbered channel. The FIFO stores X conversion results where Channel 16– ...

Page 24

... Maxim Integrated MODE NAME Scans preprogrammed channel sequence with maximum length of 256. There is no restriction on the channel pattern. Clock mode: External clock only 1 SampleSet Channel scan/sequence: Unique channel sequence Maximum depth: 256 conversions Channel Selection: See Table 4 Averaging: No Continue to operate in the previously selected mode ...

Page 25

... Table 6. ADC Configuration Register BIT NAME BIT CONFIG_SETUP 15:11 REFSEL 10 AVGON 9 Maxim Integrated U Full shutdown where all circuitry is shutdown. U Partial shutdown where all circuitry is powered down Table 1 details the When the PM_ bits in the ADC Mode Control register are through Table 14 asserted edge the next frame ...

Page 26

... ADCs with Post-Mux External Signal Conditioning Access Table 6. ADC Configuration Register (continued) BIT NAME BIT NAVG[1:0] 8:7 NSCAN[1:0] 6:5 SPM[1:0] 4:3 ECHO 2 — 1:0 Maxim Integrated DEFAULT STATE Valid for internal clock mode only. AVGON NAVG1 Scans channel N and returns results. Valid for repeat mode only. ...

Page 27

... SampleSet Mode of Operation The SampleSet register stores the unique channel sequence length. The sequence pattern is comprised 256 unique single-ended and/or differential conver- sions with any order or pattern. Maxim Integrated DEFAULT STATE N/A Set to 10011 to select the RANGE register Set to 0 for AIN0/1: +V ...

Page 28

... UNIPOLAR REGISTER BIT NAME UCH0 AIN0 Selection: 1 CHSEL[3:0] = 0000 CHSCAN0 = AIN1 Selection: 1 CHSEL[3:0] = 0001 CHSCAN1 = Maxim Integrated SUPPORTED WAVEFORMS REFSEL = 0 REF+ RANGE IN+ REF+ REF+ GND, AIN15 PDIFF_COM = 1 REF+ RANGE IN+ REF+ REF+ ...

Page 29

... BCH10/11 5 BCH12/13 4 BCH14/15 3 — 2:0 Maxim Integrated STATE — Set to 10001 to select the Unipolar register. Set configure AIN0 and AIN1 for pseudo-differential conversion. 0 Set configure AIN0 and AIN1 for single-ended conversion. Set configure AIN2 and AIN3 for pseudo-differential conversion. ...

Page 30

... BIT NAME BIT DEFAULT STATE SMPL_SET 15:11 SEQ_LENGTH 10:3 — 2:0 Maxim Integrated — Set to 10100 to select the Custom Scan0 register. 0 Set scan AIN15. Set omit AIN15. 0 Set scan AIN14. Set omit AIN14. 0 Set scan AIN13. Set omit AIN13. ...

Page 31

... For best performance, use PCBs with a solid ground plane. Ensure that digital and analog signal lines are separated from each other. Do not run analog and digital (especially clock) lines parallel to one another or digital lines underneath the ADC package. Noise in the V Maxim Integrated MAX11335–MAX11340 16 1 ENTRY 1 ...

Page 32

... BIPOLAR REGISTER SET PER REGISTER SET BIT PDIFF_COM CHANNEL UCH{X}/{X+ FOR PSEUDO- AND BCH{X}/{X+ FOR DIFFERENTIAL SELECTION SINGLE-ENDED SELECTION Figure 11. ADC Programming Sequence Maxim Integrated SELECT REFERENCE SINGLE-ENDED OR DIFFERENTIAL SELECT ADC FIGURE OUT NUMBER OF CHANNELS TO USE (N) FOR EACH ADC CHANNEL ...

Page 33

... ADC CONFIGURATION REGISTER YES UPPER-INT NO ADC CONFIGURATION REGISTER YES CUSTOM-INT NO ADC CONFIGURATION REGISTER Figure 12. ADC Mode Select Programming Sequence Maxim Integrated INTERNAL INTERNAL/EXTERNAL CLOCK NO AVERAGE YES SET AVG ON BIT TO 1 SET NAVG[1: ADC CONFIGURATION REGISTER SET NSCAN[1:0] FOR SCAN COUNT ...

Page 34

... 0.1µF 100pF 500I 500I 4 5 INPUT 2 MAX4430 0.1µF Figure 13. Typical Application Circuit Maxim Integrated U Initial voltage accuracy U Temperature drift U Current source capability U Current sink capability U Quiescent current U Noise. See +5V 0.1µF 10µ 0.1µF 10µF 10I 1 470pF COG ...

Page 35

... High precision, wide temperature range MAX6129B Low cost, ultra-low power MAX6003 Low cost, low power Maxim Integrated Definitions In reality, there are other noise sources besides quantiza- tion noise, including thermal noise, reference noise, clock jitter, etc. Therefore, SNR is computed by taking the ratio ...

Page 36

... PART PIN-PACKAGE MAX11335ATJ+ 32 TQFN-EP* MAX11336ATJ+ 32 TQFN-EP* MAX11337ATJ+ 32 TQFN-EP* MAX11338ATJ+ 32 TQFN-EP* MAX11339ATJ+ 32 TQFN-EP* MAX11340ATJ+ 32 TQFN-EP* Note: All devices are specified over the -40°C to +125°C temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Maxim Integrated MAX11335–MAX11340 PROCESS: BiCMOS Ordering Information ...

Page 37

... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 2012 Maxim Integrated © MAX11335–MAX11340 DESCRIPTION The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — 37 ...

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