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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX11158

SAR ADC


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MAX11158 pdf
MAX11158
EVALUATION KIT AVAILABLE
18-Bit, 500ksps, ±5V SAR ADC with
Internal Reference in µMAX
General Description
The MAX11158 is an 18-bit, 500ksps, SAR ADC offering
excellent AC and DC performance with true bipolar input
range, internal reference, and small size. The MAX11158
measures a ±5V (10VP-P) input range while operat-
ing from a single 5V supply. A patented charge-pump
architecture allows direct sampling of high-impedance
sources. The MAX11158 integrates a low drift reference
with internal buffer, saving the cost and space of an exter-
nal reference.
This ADC achieves 93.7dB SNR and -100.0dB THD.
The MAX11158 guarantees 18-bit no-missing codes and
±2.7 LSB INL (typ).
The MAX11158 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 for mul-
tichannel applications and provides a busy indicator option
for simplified system synchronization and timing.
The MAX11158 is offered in a 10-pin, 3mm x 5mm,
µMAXM package and is specified over the -40°C to +85°C
temperature range.
Applications
● Industrial Process Control
● Data Acquisition Systems
● Medical Instrumentation
● Automatic Test Equipment
Typical Operating Circuit
VDD
(5V)
1µF
VOVDD
(2.3V TO 5V)
1µF
MAX9632
±5V
10
AIN+
AIN-
4.7nF
REF
10µF
18-BIT ADC
INTERFACE AND
CONTROL
MAX11158
REF
BUF
INTERNAL
REFERENCE
SCLK
SDI
SDO
CNVST
GND
HOST
CONTROLLER
Benefits and Features
● High DC/AC Accuracy Improves Measurement Quality
18-Bit Resolution with No Missing Codes
500ksps Throughput Rates Without Pipeline
Delay/Latency
93.7dB SNR and -100.0dB THD at 10kHz
2.0 LSBRMS Transition Noise
±0.5 LSB DNL (typ) and ±2.7 LSB INL (typ)
● Highly Integrated ADC Saves Cost and Space
±7ppm/°C Internal Reference
Internal Reference Buffer
● Wide Supply Range and Low Power Simplify Power-
Supply Design
5V Analog Supply
2.3V to 5V Digital Supply
38mW Power Consumption at 500ksps
10μA in Shutdown Mode
● Multi-Industry Standard Serial Interface and Small
Package Reduces Size
SPI/QSPI™/MICROWIRE®/DSP-Compatible Serial
Interface
3mm x 5mm Tiny 10-Pin µMAX Package
µMAX is a registered trademark of Maxim Integrated Products, Inc.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
Selector Guide and Ordering Information appear at end of
data sheet.
14-Bit to 18-Bit SAR ADC Family
±5V Input
Internal
Reference
0 to 5V Input
Internal
Reference
0 to 5V Input
External
Reference
14-BIT
500ksps
16-BIT
250ksps
16-BIT
500ksps
18-BIT
500ksps
MAX11167 MAX11166 MAX11156
MAX11169 MAX11168 MAX11158
MAX11161 MAX11160 MAX11150
MAX11165 MAX11164 MAX11154
MAX11262 MAX11163 MAX11162 MAX11152
19-7448; Rev 0; 1/15



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MAX11158 pdf
MAX11158
18-Bit, 500ksps, ±5V SAR ADC with
Internal Reference in µMAX
Absolute Maximum Ratings
VDD to GND.............................................................-0.3V to +6V
OVDD to GND........ -0.3V to the lower of (VDD + 0.3V) and +6V
AIN+ to GND......................................................................... ±7V
AIN-, REF,to GND..................-0.3V to the lower of (VDD + 0.3V)
and +6V
SCLK, SDI, SDO, CNVST
to GND............... -0.3V to the lower of (VDD + 0.3V) and +6V
Maximum Current into Any Pin...........................................50mA
Continuous Power Dissipation (TA = +70°C)
µMAX (derate 8.8mW/°C above +70°C)......................707mW
Operating Temperature Range...........................-40°C to +85°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)
µMAX
Junction-to-Ambient Thermal Resistance (θJA)..........113°C/W
Junction-to-Case Thermal Resistance (θJC)................36°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
(VDD = 4.75V to 5.25V, VOVDD = 2.3V to 5.25V, fSAMPLE = 500ksps, TA = TMIN to TMAX, unless otherwise noted. Typical values are
at TA = +25°C.) (Note 2)
PARAMETER
ANALOG INPUT (Note 3)
SYMBOL
CONDITIONS
Input Voltage Range
AIN+ to AIN-, k = 5/4.096
Absolute Input Voltage Range
Input Leakage Current
Input Capacitance
Input-Clamp Protection Current
STATIC PERFORMANCE (Note 4)
Resolution
No Missing Codes
Offset Error
Offset Temperature Coefficient
Gain Error
Gain Error Temperature Coefficient
Integral Nonlinearity
Differential Nonlinearity
Positive Full-Scale Error
AIN+ to GND
AIN- to GND
Acquisition phase
Both inputs
N
VOVDD ≤ 3.6V
VOVDD > 3.6V
VOVDD ≤ 3.6V
VOVDD > 3.6V
INL
DNL
VOVDD ≤ 3.6V
VOVDD > 3.6V
Guaranteed by design
VOVDD ≤ 3.6V
VOVDD > 3.6V
MIN TYP MAX UNITS
-VREF
xk
-5.1
-0.1
-10
-20
+VREF
xk
+5.1
+0.1
+0.001
40
+10
+20
V
V
µA
pF
mA
18 Bits
18 Bits
-18 ±4 +18
LSB
-32 +32
±0.08
LSB/°C
-24 +24
LSB
-30 +30
±0.04
LSB/°C
-6 ±2.7 +6
LSB
-9 +9
-1.0 ±0.5 +1 LSB
-22 +22
LSB
-33 +33
www.maximintegrated.com
Maxim Integrated 2



Part Number MAX11158
Description SAR ADC
Maker Maxim Integrated - Maxim Integrated
Total Page 26 Pages
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