MAX11158 Datasheet, PDF (1/26 Pages) Maxim Integrated Products – 500ksps Throughput Rates Without Pipeline

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 (10V_P-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
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 LSB_RMS 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
10Ω
MAX9632
±5V
AIN+
AIN-
4.7nF
REF
10µF
18-BIT ADC
INTERFACE AND
CONTROL
MAX11158
SCLK
SDI
SDO
CNVST
REF
INTERNAL
BUF
REFERENCE
GND
HOST
CONTROLLER
±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
—
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