DocumentationDatasheet
Reliability Data
Product Selector Card
Linduino
Features
- Precision Reference 10ppm/°C Max
- Independently Programmable Output Ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V
- Full 16-Bit/12-Bit Resolution at All Ranges
- Maximum INL Error: ±4LSB at 16 Bits
- A/B Toggle via Software or Dedicated Pin
- 8:1 Analog Multiplexer
- Guaranteed Monotonic Over Temperature
- Internal or External Reference
- Outputs Drive ±10mA Guaranteed
- 1.8V to 5V SPI Serial interface
- 32-Lead (5mm × 5mm) QFN Package
Typical Application
Description
The LTC®2666 is a family of 8-channel, 16-/12-bit ±10V digital-to-analog converters with integrated precision references. They are guaranteed monotonic and have built-in rail-to-rail output buffers. These SoftSpan™ DACs offer five output ranges up to ±10V. The range of each channel is independently programmable, or the part can be hardware-configured for operation in a fixed range.
The integrated 2.5V reference is buffered separately to each channel; an external reference can be used for additional range options. The LTC2666 also includes A/B toggle capability via a dedicated pin or software toggle command.
The SPI/Microwire-compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz.
5x5 QFN-32
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC2666IUH-16#PBF | QFN | 32 | I | $35.64 | $24.95 |
| LTC2666IUH-12#TRPBF | QFN | 32 | I | $28.56 | $20.01 |
| LTC2666CUH-12#PBF | QFN | 32 | C | $24.79 | $17.35 |
| LTC2666HUH-16#PBF | QFN | 32 | H | $41.07 | $28.75 |
| LTC2666IUH-16#TRPBF | QFN | 32 | I | $35.70 | $25.01 |
| LTC2666HUH-16#TRPBF | QFN | 32 | H | $41.13 | $28.81 |
| LTC2666HUH-12#TRPBF | QFN | 32 | H | $32.85 | $23.01 |
| LTC2666CUH-12#TRPBF | QFN | 32 | C | $24.85 | $17.41 |
| LTC2666CUH-16#TRPBF | QFN | 32 | C | $31.13 | $21.81 |
| LTC2666IUH-12#PBF | QFN | 32 | I | $28.50 | $19.95 |
| LTC2666HUH-12#PBF | QFN | 32 | H | $32.79 | $22.95 |
| LTC2666CUH-16#PBF | QFN | 32 | C | $31.07 | $21.75 |
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.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2196A-A | LTC2666-16 Demo Board | 8-Channel 16-Bit ±10V VOUT SoftSpan DAC with 10ppm/°C Max Reference (req DC2026 or DC590) | $75.00 | |
| DC2196A-B | LTC2666-12 Demo Board | 8-Channel 12-Bit ±10V VOUT SoftSpan DAC with 10ppm/°C Max Reference (req DC2026 or DC590) | $75.00 |
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| 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 |