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MAX11904 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX11904
Description  20-Bit, 1.6Msps, Low-Power, Fully Differential
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX11904 Datasheet(HTML) 1 Page - Maxim Integrated Products

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General Description
The MAX11905 is a 20-bit, 1.6Msps, single-channel, fully
differential SAR ADC with internal reference buffers. The
MAX11905 provides excellent static and dynamic perfor-
mance with best-in-class power consumption that directly
scales with throughput. The device has a unipolar differ-
ential ±VREF input range. Supplies include a 3.3V supply
for the reference buffers, a 1.8V analog supply, a 1.8V
digital supply, and a 1.5V to 3.6V digital interface supply.
This ADC achieves 98.3dB SNR and -123dB THD, guar-
antees 20-bit resolution with no-missing codes and 6 LSB
INL (max).
The MAX11905 communicates data using a SPI-
compatible serial interface. The MAX11905 is offered in a
20-pin, 4mm x 4mm, TQFN package and is specified over
the -40°C to +85°C operating temperature range.
Applications
● Test and Measurement
● Automatic Test Equipment
● Medical Instrumentation
● Process Control and Industrial Automation
● Data Acquisition Systems
● Telecommunications
● Battery-Powered Equipment
Benefits and Features
● High DC/AC Accuracy Provides Better Measurement
Quality
• 20-Bit Resolution with No Missing Codes
• ±6 LSB INL and ±1 LSB DNL Maximum at 20 Bits
• 98.3dB SNR and 98.1dB SINAD at fIN = 10kHz
• -123dB THD at fIN = 10kHz
● High Sampling Rate SAR Architecture Enables Fast
Settling and Acquisition
• 1.6Msps Throughput with No Pipeline Delay
● Integration Simplifies Design
• Integrated Reference Buffers, VREF = 2.5V to 3.6V
• ±VREF Unipolar Differential Analog Input Range
● Scalable Ultra-Low Power Supply Reduces Power
Consumption
• 9mW at 1.6Msps
● Flexible Low-Voltage Supplies Save Cost
• 1.8V Analog and Digital Core Supply
• 1.5V to 3.6V Digital Interface Supply
• 3.3V REFVDD Reference Buffer Supply
● Flexible, Industry-Standard Serial Interface and Small
Package Reduce Size
• SPI-/QSPI™-/MICROWIRE®/DSP-Compatible
• 20-Pin, 4mm x 4mm, TQFN Package
Ordering Information and Selector Guide appears at end of
data sheet.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
16-Bit to 20-Bit SAR ADC Family
1nF
COG
MAX11905
CNVST
DOUT
SCLK
DIN
AVDD DVDD OVDD
REFIN
REFVDD
AIN+
AIN-
4-WIRE
SPI
INTERFACE
3.3V
3.6V
1.8V 1.8V
1.5 TO
3.6V
7.5Ω
7.5Ω
3.3V TO 0V
0 TO 3.3V
REFGND
REF
DGND
AGND
10µF
3.3V
16-BIT
18-BIT
20-BIT
1.6Msps
MAX11901
MAX11903
MAX11905
1Msps
MAX11900
MAX11902
MAX11904
MAX11905
20-Bit, 1.6Msps, Low-Power, Fully Differential
SAR ADC
19-6860; Rev 3; 6/16
Application Diagram
EVALUATION KIT AVAILABLE


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