MAX11166 Datasheet, PDF (1/33 Pages) Maxim Integrated Products – 16-Bit, 500ksps/250ksps, ±5V SAR ADCs with Internal Reference in TDFN

EVALUATION KIT AVAILABLE
MAX11166/MAX11167
16-Bit, 500ksps/250ksps, ±5V SAR ADCs with
Internal Reference in TDFN
General Description
The MAX11166/MAX11167 16-bit, 500ksps/250ksps,
SAR ADCs offer excellent AC and DC performance with
true bipolar input range, small size, and internal reference.
The MAX11166/MAX11167 measure a Q5V (10V_P-P) input
range while operating from a single 5V supply. A patented
charge-pump architecture allows direct sampling of high-
impedance sources. The MAX11166/MAX11167 integrate
an optional 6ppm/NC reference with internal buffer, saving
the cost and space of an external reference.
These ADCs achieve 92.6dB SNR and -105dB THD. The
MAX11166/MAX11167 guarantee 16-bit no-missing codes
and Q0.5 LSB INL (typ).
The MAX11166/MAX11167 communicate 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 in parallel for multichannel applications and pro-
vides a busy indicator option for simplified system syn-
chronization and timing.
The MAX11166/MAX11167 are offered in 12-pin, 3mm x
3mm, TDFN packages and are specified over the -40NC
to +85NC temperature range.
Applications
● Data Acquisition Systems
● Industrial Control Systems/Process Control
● Medical Instrumentation
● Automatic Test Equipment
Selector Guide and Ordering Information appear at end of
data sheet.
Typical Operating Circuit
Features
● High DC and AC Accuracy
● 16-Bit Resolution with No Missing Codes
● SNR: 92.6dB
● THD: -105dB at 10kHz
● ±0.5 LSB INL (typ)
● ±0.2 LSB DNL (typ)
● Internal Reference and Reference Buffer Saves Cost
and Board Space
● 6ppm/°C typ
● Tiny 12-Pin 3mm x 3mm TDFN Package
● Bipolar ±5V Analog Input Range Saves External
Signal Conditioning
● Single-Supply ADC with Low Power
● 5V Analog Supply
● 2.3V to 5V Digital Supply
● 26.4mW at 500ksps
● 1µA Shutdown Mode
● 500ksps Throughput Rate (MAX11166)
● 250ksps Throughput Rate (MAX11167)
● No Pipeline Delay/Latency
● Flexible Industry-Standard Serial Interface Saves I/O
Pins
● SPI/QSPI™/MICROWIRE^®/DSP-Compatible
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX11166.related.
50Ω
AIN+
±5V
MAX9632
500pF
AIN-
REF
10µF
1µF
VDD
(5V)
16-BIT ADC
MAX11166
MAX11167
REF
BUF
AGNDS
1µF
OVDD
(2.3V TO 5V)
INTERFACE
AND CONTROL
CONFIGURATION REGISTER
INTERNAL REFERENCE
GND
SCLK
DIN
DOUT
CNVST
REFIO
HOST
CONTROLLER
0.1µF
19-6445; Rev 1; 12/12