LTC2373-18 - 18-Bit, 1Msps, 8-Channel SAR ADC with 100dB SNR
The LTC®2373-18 is a low noise, high speed, 8-channel 18-bit successive approximation register (SAR) ADC. Operating from a single 5V supply, the LTC2373-18 has a highly configurable, low crosstalk 8-channel input multiplexer, supporting fully differential, pseudo-differential unipolar and pseudo-differential bipolar analog input ranges. The LTC2373-18 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 LTC2373-18 has an onboard low drift (20ppm/°C max) 2.048V temperature-compensated reference and a singleshot capable reference buffer. The LTC2373-18 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 LTC2373-18 dissipates only 40mW 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 LTC2373-18 to 300μW for further power savings during inactive periods.
Features- 1Msps Throughput Rate
- 18-Bit Resolution with No Missing Codes
- 8-Channel Multiplexer with Selectable Input Range
- 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 40mW (Typical)
- Guaranteed Operation to 125°C
- 32-Lead 5mm × 5mm QFN Package
Typical Application
 | Applications- Programmable Logic Controllers
- Industrial Process Control
- High Speed Data Acquisition
- Portable or Compact Instrumentation
- ATE
Packaging |
Order Information| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|
| LTC2373CUH-18#PBF | 5x5 QFN-32 | C | $24.79 | $17.35 |
| LTC2373CUH-18#TRPBF | 5x5 QFN-32 | C | $24.85 | $17.41 |
| LTC2373HUH-18#PBF | 5x5 QFN-32 | H | $32.78 | $22.95 |
| LTC2373HUH-18#TRPBF | 5x5 QFN-32 | H | $32.84 | $23.01 |
| LTC2373IUH-18#PBF | 5x5 QFN-32 | I | $28.50 | $19.95 |
| LTC2373IUH-18#TRPBF | 5x5 QFN-32 | I | $28.56 | $20.01 |
Demo Boards
| Part Number | Description | Price |
|---|
| DC2071A-A | LTC2373-18 Demo Board | 18-Bit, 1Msps, 8-Channel SAR ADC with 100dB SNR (req DC590, DC2026 or DC890) | $150.00 |
Companion Boards| Part Number | Description | Price |
|---|
| DC2026C | Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform | $75.00 |
| DC590B | Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards | $50.00 |
| DC890B | USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) | $300.00 |
DatasheetReliability DataProduct Selector CardPress ReleaseSoftware and SimulationCAD SymbolLinduino | Related Products- LTC2378-20 - 20-Bit, 1Msps, Low Power SAR ADC with 0.5ppm INL
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