LTC1446 - Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8
Datasheet 
DocumentationDatasheet
Application Note
Design Note
- DN131 - The LTC1446/LTC1446L: World's First Dual 12-Bit DACs in SO-8
- DN138 - Micropower ADC and DAC in SO-8 Give PCs a 12-Bit Analog Interface
Reliability Data
Product Selector Card
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Features
- Dual DACs with 12-Bit Resolution
- SO-8 Package
- Rail-to-Rail Output Amplifiers
- Internal Reference
- Maximum DNL Error: 0.5LSB
- 3V Operation (LTC1446L): Icc = 650µA Typ
- 5V Operation (LTC1446): Icc = 1000µA Typ
- Settling Time: 14µs to ±0.5LSB
- Power-on Reset Clears DACs to 0V
- 3-Wire Cascadable Serial Interface with 500kHz Update Rate
- Schmitt Trigger On Input Allows Direct Optocoupler Interface
- Low Cost
Typical Application
Description
The LTC1446/LTC1446L are dual 12-bit digital-to-analog converters (DACs) available in an SO-8 package. They are complete with a rail-to-rail voltage output amplifier, an internal reference and an easy-to-use 3-wire cascadable serial interface. The LTC1446 has an internal reference and a full-scale output of 4.095V. It operates from a single 4.5V to 5.5V supply. The LTC1446L has an internal reference and a full-scale output of 2.5V. It operates from a single 2.7V to 5.5V supply. The low power supply current makes the LTC1446 family ideal for battery-powered applications. These DACs are available in space saving 8-pin SO and PDIP packages and require no external components for operation.N-8,SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1446CN8#PBF | PDIP | 8 | C | $8.00 | $6.40 |
| LTC1446CS8#PBF | SO | 8 | C | $8.10 | $6.50 |
| LTC1446CS8#TRPBF | SO | 8 | C | $6.56 | |
| LTC1446IN8#PBF | PDIP | 8 | I | $9.00 | $7.20 |
| LTC1446IS8#PBF | SO | 8 | I | $9.10 | $7.30 |
| LTC1446IS8#TRPBF | SO | 8 | I | $7.36 | |
| LTC1446LCN8#PBF | PDIP | 8 | C | $8.85 | $7.05 |
| LTC1446LCS8#PBF | SO | 8 | C | $8.90 | $7.15 |
| LTC1446LCS8#TRPBF | SO | 8 | C | $7.21 | |
| LTC1446LIN8#PBF | PDIP | 8 | I | $9.90 | $7.95 |
| LTC1446LIS8#PBF | SO | 8 | I | $10.00 | $8.05 |
| LTC1446LIS8#TRPBF | SO | 8 | I | $8.11 | |
| LTC1446CN8 | PDIP | 8 | C | $16.00 | $12.80 |
| LTC1446CS8 | SO | 8 | C | $16.20 | $13.00 |
| LTC1446CS8#TR | SO | 8 | C | $13.12 | |
| LTC1446IN8 | PDIP | 8 | I | $18.00 | $14.40 |
| LTC1446IS8 | SO | 8 | I | $18.20 | $14.60 |
| LTC1446IS8#TR | SO | 8 | I | $14.72 | |
| LTC1446LCN8 | PDIP | 8 | C | $17.70 | $14.10 |
| LTC1446LCS8 | SO | 8 | C | $17.80 | $14.30 |
| LTC1446LCS8#TR | SO | 8 | C | $14.42 | |
| LTC1446LIN8 | PDIP | 8 | I | $19.80 | $15.90 |
| LTC1446LIS8 | SO | 8 | I | $20.00 | $16.10 |
| LTC1446LIS8#TR | SO | 8 | I | $16.22 |
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.