EVALUATION KIT AVAILABLE
MAX11169
16-Bit, 250ksps, ±5V SAR ADC with
Internal Reference in µMAX
General Description
The MAX11169 is a 16-bit, 250ksps, SAR ADC offering
excellent AC and DC performance with true bipolar input
range, internal reference, and small size. The MAX11169
Benefits and Features
● High DC/AC Accuracy Improves Measurement
Quality
• 16-Bit Resolution with No Missing Codes
• 250ksps 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 MAX11169 integrates a low drift reference
with internal buffer, saving the cost and space of an exter-
nal reference.
• 93dB SNR and -101dB THD at 10kHz
• 0.5 LSB
Input-Referred Noise
RMS
• ±0.2 LSB DNL (typ) and ±0.5 LSB INL (typ)
● Highly Integrated ADC Saves Cost and Space
• ±7ppm/°C Internal Reference
This ADC achieves 93dB SNR at 10kHz and -101dB THD.
The MAX11169 guarantees 16-bit no-missing codes and
±0.5 LSB INL (typ).
• Internal Reference Buffer
• ±5V Bipolar Analog Input Range
● Wide Supply Range and Low Power Simplify
Power-Supply Design
The MAX11169 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.
• 5V Analog Supply
• 2.3V to 5V Digital Supply
• 33mW Power Consumption at 250ksps
• 10µA in Shutdown Mode
The MAX11169 is offered in a 10-pin, 3mm x 5mm,
● Multi-Industry Standard Serial Interface and Small
Package Reduce Size
µMAX
M package and is specified over the -40°C to +85°C
temperature range.
• 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.
Typical Operating Circuit
V
V
DD
OVDD
(5V)
(2.3V TO 5V)
1µF
1µF
16-Bit to 18-Bit SAR ADC Family
14-BIT/
500ksps
16-BIT/
250ksps
16-BIT/
500ksps
18-BIT/
500ksps
10Ω
AIN+
AIN-
SCLK
MAX9632
SDI
±5V
16-BIT ADC
HOST
CONTROLLER
INTERFACE AND CONTROL
SDO
CNVST
MAX11167 MAX11166 MAX11156
MAX11169 MAX11168 MAX11158
±5V Input
Internal REF
—
—
4.7nF
MAX11169
REF
INTERNAL
REFERENCE
REF
BUF
MAX11165 MAX11164 MAX11154
MAX11161 MAX11160 MAX11150
0 to 5V Input
Internal REF
10µF
GND
0 to 5V Input
External REF
MAX11262 MAX11163 MAX11162 MAX11152
19-6943; Rev 3; 10/15