LTC2372-18 Series

18-Bit, 500ksps, 8-Channel SAR ADC with 100dB SNR

Catalog

18-Bit, 500ksps, 8-Channel SAR ADC with 100dB SNR

Part	Supplier Device Package	Architecture	Ratio - S/H:ADC	Number of Bits	Number of A/D Converters	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Sampling Rate (Per Second)	Voltage - Supply, Digital	Number of Inputs	Data Interface	Configuration	Input Type	Voltage - Supply, Analog	Reference Type
Analog Devices LTC2372HUH-16#TRPBF	32-QFN (5x5)	SAR	1:1	16	1	Surface Mount	125 °C	-40 °C	500k	5 V	8	SPI	MUX-S/H-ADC	Differential Pseudo-Differential	5 V	External Internal
Analog Devices LTC2372HUH-18#TRPBF	32-QFN (5x5)	SAR	1:1		1	Surface Mount	125 °C	-40 °C	500k	5 V	8	SPI	MUX-S/H-ADC	Differential Pseudo-Differential	5 V	Internal
Analog Devices LTC2372HUH-18#PBF	32-QFN (5x5)	SAR	1:1		1	Surface Mount	125 °C	-40 °C	500k	5 V	8	SPI	MUX-S/H-ADC	Differential Pseudo-Differential	5 V	Internal
Analog Devices LTC2372CUH-16#TRPBF	32-QFN (5x5)	SAR	1:1	16	1	Surface Mount	70 °C	0 °C	500k	5 V	8	SPI	MUX-S/H-ADC	Differential Pseudo-Differential	5 V	External Internal
Analog Devices LTC2372CUH-18#TRPBF	32-QFN (5x5)	SAR	1:1		1	Surface Mount	70 °C	0 °C	500k	5 V	8	SPI	MUX-S/H-ADC	Differential Pseudo-Differential	5 V	Internal

Catalog

18-Bit, 500ksps, 8-Channel SAR ADC with 100dB SNR

Key Features

• 500ksps Throughput Rate

• 18-Bit Resolution with No Missing Codes

• 8-Channel Multiplexer with Selectable Input RangeFully Differential (±4.096V)Pseudo-Differential Unipolar (0V to 4.096V)Pseudo-Differential Bipolar (±2.048V)

• Fully Differential (±4.096V)

• Pseudo-Differential Unipolar (0V to 4.096V)

• Pseudo-Differential Bipolar (±2.048V)

• INL: ±2.75LSB (Maximum)

• SNR: 100dB (Fully Differential)/95dB (Pseudo-Differential) (Typical) at fIN= 1kHz

• THD: –110dB (Typical) at fIN= 1kHz

• Programmable Sequencer

• Selectable Digital Gain Compression

• Single 5V Supply with 1.8V to 5V I/O Voltages

• SPI-Compatible Serial I/O

• Onboard 2.048V Reference and Reference Buffer

• No Pipeline Delay, No Cycle Latency

• Power Dissipation 27mW (Typical)

• Guaranteed Operation to 125°C

• 32-Lead 5mm × 5mm QFN Package

Description

The LTC2372-18 is a low noise, high speed, 8-channel 18-bit successive approximation register (SAR) ADC. Operating from a single 5V supply, the LTC2372-18 has a highly configurable, low crosstalk 8-channel input multiplexer, supporting fully differential, pseudo-differential unipolar and pseudo-differential bipolar analog input ranges. The LTC2372-18 achieves ±2.75LSB INL (maximum) in all input ranges, no missing codes at 18-bits and 100dB (fully differential)/ 95dB (pseudo-differential) SNR (typical).The LTC2372-18 has an onboard low drift (20ppm/°C max) 2.048V temperature-compensated reference and a single-shot capable reference buffer. The LTC2372-18 also has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic through which a sequencer with a depth of 16 may be programmed. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2372-18 dissipates only 27mW and automatically naps between conversions, leading to reduced power dissipation that scales with the sampling rate. A sleep mode is also provided to reduce the power consumption of the LTC2372-18 to 300μW for further power savings during inactive periods.ApplicationsProgrammable Logic ControllersIndustrial Process ControlHigh Speed Data AcquisitionPortable or Compact InstrumentationATE