EVALUATION KIT AVAILABLE
MAX11168
16-Bit, 500ksps, ±5V SAR ADC with
Internal Reference in µMAX
General Description
The MAX11168 is a 16-bit, 500ksps, SAR ADC offering
excellent AC and DC performance with true bipolar input
range, internal reference, and small size. The MAX11168
Benefits and Features
● High DC/AC Accuracy Improves Measurement
Quality
• 16-Bit Resolution with No Missing Codes
• 500ksps Throughput Rates Without Pipeline Delay/
Latency
measures a ±5V (10V ) input range while operat-
P-P
ing from a single 5V supply. A patented charge-pump
architecture allows direct sampling of high-impedance
sources. The MAX11168 integrates a low drift reference
with internal buffer, saving the cost and space of an exter-
nal reference.
• 92.3dB SNR and -101dB THD at 10kHz
• 0.5 LSB
Input-Referred Noise
RMS
• ±0.2 LSB DNL (typ) and ±0.75 LSB INL (typ)
● Highly Integrated ADC Saves Cost and Space
• ±7ppm/°C Internal Reference
This ADC achieves 92.3dB SNR and -101dB THD. The
MAX11168 guarantees 16-bit no-missing codes and ±0.75
LSB INL (typ).
• Internal Reference Buffer
• ±5V Bipolar Analog Input Range
The MAX11168 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.
● Wide Supply Range and Low Power Simplify
Power-Supply Design
• 5V Analog Supply
• 2.3V to 5V Digital Supply
• 37.6mW Power Consumption at 500ksps
• 10µA in Shutdown Mode
The MAX11168 is offered in a 10-pin, 3mm x 5mm,
µMAX
temperature range.
M package and is specified over the -40°C to +85°C
● Multi-Industry Standard Serial Interface and Small
Package Reduce Size
• SPI/QSPI™/MICROWIRE®/DSP-Compatible Serial
Interface
• 3mm x 5mm Tiny 10-Pin µMAX Package
Applications
● Industrial Process Control
● Data Acquisition Systems
● Medical Instrumentation
● Automatic Test Equipment
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.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX11168.related.
Typical Operating Circuit
16-Bit to 18-Bit SAR ADC Family
VDD
(5V)
VOVDD
(2.3V TO 5V)
16 BIT/
16 BIT/
18 BIT/
1µF
1µF
250ksps
500ksps
500ksps
10Ω
AIN+
AIN-
SCLK
MAX9632
MAX11167
MAX11169
MAX11166
MAX11168
MAX11156
MAX11158
±5V Input
Internal REF
DIN
±5V
16-BIT ADC
HOST
CONTROLLER
INTERFACE AND
CONTROL
DOUT
CNVST
4.7nF
MAX11168
MAX11165
MAX11161
MAX11164
MAX11160
MAX11154
MAX11150
+5V Input
Internal REF
REF
INTERNAL
REFERENCE
REF
BUF
10µF
+5V Input
External REF
GND
MAX11163
MAX11162
MAX11152
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