DocumentationDatasheet
Reliability Data
LT Journal
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Features
- Complete 12-Bit ADC with Reference in SO-8
- Single Supply 3V Operation
- Sample Rate: 200ksps
- Power Dissipation: 15mW (Typ)
- 68dB S/(N + D) and ?72dB THD at 50kHz
- No Missing Codes Over Temperature
- Nap Mode with Instant Wake-Up: 1.5mW
- Sleep Mode: 19.5µW
- Shutdown Mode: 13.5µW
- High Impedance Analog Input
- Input Range (0.5mV/LSB): 0V to 2.048V
- Internal Reference Can Be Overdriven Externally
- 3-Wire Interface to DSPs and Processors (SPI and MICROWIRE™ Compatible)
Typical Application
Description
The LTC1401 is a complete 200ksps, 12-bit A/D converter that converts 0V to 2.048V unipolar input and draws only 15mW from a single 3V supply. This easy-to-use device comes complete with a 315ns sample-and-hold and a precision reference. Maximum DC specifications include ±1LSB INL, ±1LSB DNL and 45ppm/°C full-scale drift over temperature.The LTC1401 has three power saving modes: Nap and Sleep, through the serial interface and Shutdown by setting the SHDN pin to zero. In Nap mode, it consumes only 1.5mW of power and can wake up and convert immediately. In Sleep (Shutdown) mode, it consumes 19.5µW (13.5µW) of power typically. Upon power-up from Sleep or Shutdown mode, a reference ready (REFRDY) signal is available in the serial word to indicate that the reference has settled and the chip is ready to convert.
The 3-wire serial port allows compact and efficient data transfer to a wide range of microprocessors, microcontrollers and DSPs.
SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1401CS8#PBF | SO | 8 | C | $3.70 | $3.15 |
| LTC1401CS8#TRPBF | SO | 8 | C | $3.21 | |
| LTC1401IS8#PBF | SO | 8 | I | $4.40 | $3.75 |
| LTC1401IS8#TRPBF | SO | 8 | I | $3.81 | |
| LTC1401CS8 | SO | 8 | C | $7.40 | $6.30 |
| LTC1401CS8#TR | SO | 8 | C | $6.42 | |
| LTC1401IS8 | SO | 8 | I | $8.80 | $7.50 |
| LTC1401IS8#TR | SO | 8 | I | $7.62 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.