MAX11156：18-Bit, 500ksps, ±5V SAR ADC with Internal Reference in TDFN

Industry's Smallest, True Bipolar ±5V, 18-Bit ADC

The MAX11156 18-bit, 500ksps, SAR ADC offers excellent AC and DC performance with true bipolar input range, small size, and internal reference. The MAX11156 measures a ±5V (10VP-P) input range while operating from a single 5V supply. A patented charge-pump architecture allows direct sampling of high-impedance sources. The MAX11156 integrates an optional internal reference and buffer, saving additional cost and space. This ADC achieves 94.6dB SNR and -101.4dB THD (typ). The MAX11156 guarantees 18-bit no-missing codes and ±2.8 LSB INL (typ). The MAX11156 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 in parallel for multichannel applications and provides a busy indicator option for simplified system synchronization and timing. The MAX11156 is offered in a 12-pin, 3mm x 3mm, TDFN package and is specified over the -40°C to +85°C temperature range.

Key Features

High DC/AC Accuracy Improves Measurement Quality
- 18-Bit Resolution with No Missing Codes
- 500ksps Throughput Rates without Pipeline Delay/Latency
- 94.6dB SNR and -101.4dB THD at 10kHz
- 1.6 LSBRMS Transition Noise
- ±0.5 LSB DNL (typ) and ±2.8 LSB INL (typ)
Highly Integrated ADC Saves Cost and Space
- 6ppm/°C Internal Reference
- Internal Reference Buffer
- ±5V Bipolar Analog Input Range
Wide Supply Range and Low Power Simplify Power-Supply Design
- 5V Analog Supply
- 2.3V to 5V Digital Supply
- 25.8mW Power Consumption at 500ksps
- 10µA in Shutdown Mode
Multi-Industry Standard Serial Interface and Small Package Reduce Size
- SPI/QSPI™/MICROWIRE®/DSP-Compatible Serial Interface
- 3mm x 3mm Tiny 12-Pin TDFN Package

MAX11156: Typical Operating Circuit

Applications/Uses

Automatic Test Equipment
Data Acquisition Systems
Industrial Control Systems/Process Control
Medical Instrumentation

DataSheet

title	Download file
MAX11156 Data Sheet	MAX11156.pdf

Parametrics

Part Number	Resolution (bits)	Input Chan.	Conv. Rate (ksps)	ADC Architecture	Data Bus	Diff/S.E. Input	Internal V_REF (V)	External V_REF (V)	External V_REF (V)	Bipolar V_IN (±V)	SNR (dB)	THD (dB)	INL (±LSB)	Package/Pins	Budgetary Price
Part Number	ADC	Input Chan.	max	ADC Architecture	Data Bus	Diff/S.E. Input	nominal	min	max	max	SNR (dB)	THD (dB)	INL (±LSB)	Package/Pins	See Notes
MAX11156	18	1	500	SAR	DSP-Compatible Serial Microwire QSPI SPI	Both	4.096	2.5	4.25	5	94.6	-105	2.5	TDFN/12	$16.90 @1k

Design kits & evaluation modules

MAX11156EVSYS

Quality and Environmental Data

MAX11156.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX11156ETC+	Active		TDFN,;12 pin;9.6 mm²	-40°C to +85°C	Lead Free
MAX11156ETC+T	Active		TDFN,;12 pin;9.6 mm²	-40°C to +85°C	Lead Free
MAX11156EVKIT#	No Longer Available	MAX11156EVSYS#	EVKIT;	-40°C to +85°C	See data sheet