MAX11156ETC+ Maxim Integrated, MAX11156ETC+ Datasheet

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MAX11156ETC+

Manufacturer Part Number
MAX11156ETC+
Description
Analog to Digital Converters - ADC 18Bit 500ksps 5V SAR ADC w/Internal Ref
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX11156ETC+

Rohs
yes
Number Of Channels
1
Architecture
SAR
Conversion Rate
500 KSPs
Resolution
18 bit
Input Type
Pseudo-Differential
Snr
94.6 dB
Interface Type
SPI
Operating Supply Voltage
2.3 V to 5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
TDFN-12
Maximum Power Dissipation
38.5 W
Minimum Operating Temperature
- 40 C
Number Of Converters
1
Selector Guide
data sheet.
MAX11156
General Description
The MAX11156 18-bit, 500ksps, SAR ADC offers excel-
lent AC and DC performance with true bipolar input range,
small size, and internal reference. The MAX11156 mea-
sures a ±5V (10V
single 5V supply. A patented charge-pump architecture
allows direct sampling of high- impedance sources. The
MAX11156 integrates an optional 6ppm/°C reference with
internal buffer, saving the cost and space of an external
reference.
The MAX11156 produces 94.6dB SNR and -105dB THD
(typ). The MAX11156 guarantees 18-bit no-missing codes.
The MAX11156 communicates using an SPI-compatible
serial interface at 2.5V, 3V, 3.3V, or 5V logic. The serial
interface can be used to daisy-chain multiple ADCs in
parallel for multichannel applications and provides a busy
indicator option for simplified system synchronization and
timing.
The MAX11156 is offered in a 12-pin, 3mm x 3mm, TDFN
package and is specified over the -40°C to +85°C tem-
perature range.
Applications
● Data Acquisition Systems
● Industrial Control Systems/Process Control
● Medical Instrumentation
● Automatic Test Equipment
Typical Operating Circuit
19-6622; Rev 0; 3/13
±5V
and
P-P
MAX9632
Ordering Information
) input range while operating from a
50
500pF
10µF
AIN+
AIN-
REF
appear at end of
1µF
18-BIT ADC
18-Bit, 500ksps, ±5V SAR ADC with Internal
AGNDS
V
(5V)
DD
REF
BUF
MAX11156
Features
● High DC and AC Accuracy
● 18-Bit Resolution with No Missing Codes
● SNR: 94.6dB
● THD: -105dB at 10kHz
● ±2.5 LSB INL (typ)
● ±0.4 LSB DNL (typ)
● Internal Reference and Reference Buffer Save Cost
● 6ppm/°C (typ)
● Tiny 12-Pin 3mm x 3mm TDFN Package
● Bipolar ±5V Analog Input Range Saves External
● Single-Supply ADC with Low Power
● 5V Analog Supply
● 2.3V to 5V Digital Supply
● 26.5mW at 500ksps
● Shutdown Mode
● 500ksps Throughput Rate
● No Pipeline Delay/Latency
● Flexible Industry-Standard Serial Interface Saves I/O
● SPI/QSPI™/MICROWIRE
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
For related parts and recommended products to use with this part, refer
to
www.maximintegrated.com/MAX11156.related
and Board Space
Signal Conditioning
Pins
CONFIGURATION REGISTER
1µF
AND CONTROL
INTERFACE
INTERNAL REFERENCE
GND
OVDD
(2.3V TO 5V)
Reference in TDFN
SCLK
DIN
DOUT
CNVST
REFIO
®
EVALUATION KIT AVAILABLE
/DSP-Compatible
CONTROLLER
0.1µF
HOST
.

Related parts for MAX11156ETC+

MAX11156ETC+ Summary of contents

Page 1

MAX11156 General Description The MAX11156 18-bit, 500ksps, SAR ADC offers excel- lent AC and DC performance with true bipolar input range, small size, and internal reference. The MAX11156 mea- sures a ±5V (10V ) input range while operating from a ...

Page 2

... V REF REF -( 0.1) 0.1) -0.1 +0.1 -10 +0.001 +10 15 -20 + -1.5 ±0.1 +1.5 -40 ±2.6 +40 ±2.4 -40 ±8 +40 ±1 -8 ±2 ±2.5 +6 -0.9 ±0.5 +0.9 -55 +55 -45 +45 Maxim Integrated │ unless MAX UNITS V V µ Bits Bits mV LSB µV/°C LSB ppm/°C LSB LSB LSB LSB ...

Page 3

... MIN MIN TYP MAX -77 ±8.0 1.7 4.092 4.096 4.100 -17 ±9 +17 4.092 4.096 4.100 -15 ±6 + 4.096 4.25 -500 +500 -10 ±6 +10 10 2.5 4.25 20 130 93 94.6 93.7 90.6 93.6 91.5 94.2 93.0 90.2 92.8 Maxim Integrated │ unless MAX UNITS dB LSB LSB RMS V ppm/°C V ppm/°C kΩ V µV µV/°C µ µ ...

Page 4

... MIN MIN TYP MAX 96 105 -105 -96 -115 0.01 500 400 6 > 0.2 2.5 50 4.75 5.25 2.3 5.25 5.0 6.0 6.5 3.0 3.6 4.0 6.3 10 1.7 2.0 4.4 5.0 0.9 10 26.5 38.5 0 OVDD 0 OVDD ±0. OVDD 10 -10 +10 V OVDD - 0.4 Maxim Integrated │ unless MAX UNITS dB dB dBFS ksps ns MHz ns ps RMS µA mA µ µA V ...

Page 5

... SAR ADC with Internal Reference in TDFN = MIN MIN TYP MAX 0.4 -10 + 100000 1.35 1.5 0 Maxim Integrated │ unless MAX UNITS V µA pF µs µs µ ...

Page 6

... OUTPUT CODE (DECIMAL) INL vs. V SUPPLY VOLTAGE DD 8 MAX INL 6 MIN INL AVERAGE OF 128 DEVICES -8 4.75 4.85 4.95 5. (V) DD Maxim Integrated │ unless MAX 131067 131065 5.15 5.25 ...

Page 7

... THERMAL DRIFT (ppm/°C) TWO TONES IMD 4096 -20 -40 -60 -80 -100 -120 -140 250 FREQUENCY (kHz) Maxim Integrated │ 7 5.15 5.25 303 DEVICES MEAN = 2.1ppm/°C STDEV = 1.9ppm/°C +25°C TO -40°C +25°C TO -85° 500ksps SAMPLE ...

Page 8

... DEVICES -104 = 10kHz -106 -108 -40 - 5.25 TEMPERATURE (°C) PSRR vs. INPUT FREQUENCY - 500ksps SAMPLE REF MODE = 3 - 4.096V REF P 5.0 ±56mV VDD - 3.3V OVDD SINGLE DEVICE -70 -75 -80 -85 100.0 0 FREQUENCY (kHz) Maxim Integrated │ 8 -THD SFDR 10 100 60 85 100 1000 ...

Page 9

... Internal Reference in TDFN = +25NC, unless otherwise noted.) A OVDD SUPPLY CURRENT vs. TEMPERATURE 3.5 AT 500ksps AT 10ksps 3.0 2.5 2.0 1.5 1.0 0.5 AVERAGE OF 128 DEVICES 0 5.25 -40 - TEMPERATURE (°C) V AND OVDD SHUTDOWN DD CURRENT vs. SUPPLY VOLTAGE 8 IVDD 7 IOVDD 2.25 2.75 3.25 3. OVDD Maxim Integrated │ 65pF DOUT 60 85 4.25 4.75 5.25 (V) ...

Page 10

... Exposed Pad connected internally to GND. Connect to PCB GND. www.maximintegrated.com 18-Bit, 500ksps, ±5V SAR ADC with Internal Reference in TDFN TOP VIEW 1 12 REFIO REF MAX11156 AIN AIN GND 7 6 TDFN FUNCTION AGNDS OVDD DIN SCLK DOUT CNVST Maxim Integrated │ 10 ...

Page 11

... REFERENCE SWITCH CONFIGURATION REFERENCE REGISTER STATE MODE B5 B4 SW2 SW1 CLOSED CLOSED 0 1 OPEN 1 CLOSED OPEN CLOSED OPEN OPEN + AIN AIN-) REF REF Circuit). This allows for Maxim Integrated │ 11 ...

Page 12

... SAR ADC with Internal Reference in TDFN section). The MAX11156 MAX11156 INPUT CLAMP CHARACTERISTICS 25 AIN+ PIN 20 INPUT SOURCE -10 - 1280I S - 5. SIGNAL VOLTAGE AT SOURCE AND AIN+ INPUT (V) Maxim Integrated │ REFIO 8 ...

Page 13

... SAR ADC with Internal Reference in TDFN Typical Operating Circuit is used where at × the input SOURCE LOAD /13, where R ACQ SOURCE is the total capacitance LOAD Circuit. NOISE (0.1Hz TO PACKAGE 10Hz) (µV ) P-P µMAX-8 1.35 SO-8 1.5 SO-8 2.4 SO-8 Maxim Integrated │ the total is the ACQ Typical ...

Page 14

... LSB -FS + 0.5 × LSB INPUT VOLTAGE (LSB COMMENTS (mA) 3.9 Single amp, low noise, low THD 3.5 Dual amp, low noise, low THD DIGITAL OUTPUT CODE (HEX) 3FFFE - 3FFFF 20000 - 20001 20000 1FFFF - 20000 00000 - 00001 Maxim Integrated │ 14 +FS - 1LSB +FS ...

Page 15

... Normal Mode. All circuitry is fully powered up at all times. 1 Static Shutdown. All circuitry is powered down. 0 Reserved, Set HSCKCNF HDINSCK SDINSCK 18-Bit, 500ksps, ±5V SAR ADC with Internal Reference in TDFN and Figure 8 for hardware connections). FUNCTION Maxim Integrated │ 15 ...

Page 16

... SAR ADC with Internal Reference in TDFN DATA LOADED TO PART A and t in all subse Maxim Integrated │ 16 ...

Page 17

... Multiple ADCs connected to a SPI- Mode, compatible digital host with interrupt input. With Busy Ideally suited for multichannel simultaneous Indicator sampled isolated applications. CNVST DOUT MAX11156 DIN SCLK Figure 6. CS No-Busy Indicator Mode Connection Diagram CONVERT DIGITAL HOST DATA IN CONFIG CLK Maxim Integrated │ 17 ...

Page 18

... CYC t ACQ ACQUISITION DDO D17 D16 D15 CONVERT OVDD CNVST 10kΩ DOUT DATA IN MAX11156 IRQ DIN CONFIG SCLK CLK 18-Bit, 500ksps, ±5V SAR ADC t SCLK SCLKL SCLKH t DIS D1 D0 DIGITAL HOST Maxim Integrated │ 18 ...

Page 19

... DDO BUSY BIT D17 D16 D15 subsequent SCLK falling edges. DOUT returns to high impedance after the 19th SCLK falling edge or when CNVST goes high, and is then pulled to OVDD through the external pullup resistor. t SCLK SCLKH t DIS D1 D0 Maxim Integrated │ 19 ...

Page 20

... This control allows multiple devices to share the same DOUT bus. CNVST DOUT MAX11156 DIN DEVICE B SCLK 18-Bit, 500ksps, ±5V SAR ADC with Internal Reference in TDFN th SCLK falling edge or when CNVST goes CS2 CS1 DOUT DIGITAL HOST DIN CONFIG DATA IN CLK Maxim Integrated │ 20 ...

Page 21

... DOUT and the MAX11156 returns to the acquisition phase. The busy indicator for the last ADC in 18-Bit, 500ksps, ±5V SAR ADC with Internal Reference in TDFN t CNVPW D17 D16 D15 D1 Figure 14 Figure 15. Maxim Integrated │ DIS D0 where three ...

Page 22

... SCLKH t DDO 18-Bit, 500ksps, ±5V SAR ADC with Internal Reference in TDFN CONFIG CONVERT DIGITAL HOST D B DOUT DATA IN CLK t CNVPW t SSCKCNF Maxim Integrated │ HSCKCNF ...

Page 23

... SAR ADC with Internal Reference in TDFN CONFIG CONVERT CNVST DIGITAL HOST D C MAX11156 DOUT DATA IN DEVICE C IRQ SCLK CLK t CNVPW t SSCKCNF t HSCKCNF Maxim Integrated │ ...

Page 24

... Signal-to-Noise Plus Distortion Signal-to-noise plus distortion (SINAD) is the ratio of the fundamental input frequency’s power to the power of all the other ADC output signals:  = × SINAD(dB) 10 log   x (262142/262144) from REF Signal   (Noise Distortion) +  Maxim Integrated │ 24 ...

Page 25

... This point is defined as full-power through input bandwidth frequency. 18-Bit, 500ksps, ±5V SAR ADC with Internal Reference in TDFN ) is the time delay from the sampling the sample-to-sample variation in AJ Maxim Integrated │ 25 ...

Page 26

... MAX11152 MAX11154 MAX11156 18 MAX11158 18 Ordering Information PART TEMP RANGE MAX11156ETC+T -40°C to +85°C +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed Pad. www.maximintegrated.com REFERENCE Internal µMAX-10 External µMAX-10 Internal/External 3mm x 3mm TDFN-12 ±5 Internal/External 3mm x 3mm TDFN-12 ±5 Internal µ ...

Page 27

... Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...

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