MAX11150
18-Bit, 500ksps, +5V SAR ADC with
Internal Reference in µMAX
General Description
The MAX11150 is an 18-bit, 500ksps, SAR ADC offering
excellent AC and DC performance with unipolar input
range, internal reference, and small size. The MAX11150
measures a +5V (0 to 5V) input range and can operate
with single 5V supply. The MAX11150 integrates a low
drift reference with internal buffer, saving the cost and
space of an external reference.
This ADC achieves 93.0dB SNR and -101.2dB THD. The
MAX11150 guarantees 18-bit no-missing codes and ±3.7
LSB INL (typ).
The MAX11150 communicates using an SPI-compatible
serial interface at 2.3V, 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 MAX11150 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
Selector Guide and Ordering Information appear at end of
data sheet.
Typical Operating Circuit
VDD
(5V)
1µF
VOVDD
(2.3V TO 5V)
1µF
MAX9632
0 TO +5V
10Ω
4.7nF
AIN+
AIN-
REF
10µF
18-BIT ADC
MAX11150
INTERFACE
AND
CONTROL
SCLK
DIN
SDO
CNVST
REF INTERNAL
BUF REFERENCE
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
• 93dB SNR and -101.2dB THD at 10kHz
• 1.9 LSBRMS Transition Noise
• ±0.5 LSB DNL (typ) and ±3.7 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
• 36.2mW Power Consumption at 500ksps
• 10μA in Shutdown Mode
●● Multi-Industry Standard Serial Interface and Small
Package Reduces Size
• SPI/QSPI™/MICROWIREM/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.
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
18-BIT
500ksps 500ksps
—
MAX11167 MAX11166 MAX11156
MAX11169 MAX11168 MAX11158
—
MAX11161 MAX11160 MAX11150
MAX11165 MAX11164 MAX11154
MAX11262 MAX11163 MAX11162 MAX11152
19-7522; Rev 0; 2/15
