LTC1257 - Complete Single Supply 12-Bit Voltage Output DAC in SO-8
Datasheet 
DocumentationDatasheet
Application Note
- AN62 - Data Acquisition Circuit Collection
- AN67 - Linear Technology Magazine Circuit Collection, Volume III
Design Note
Reliability Data
Product Selector Card
cad_symbol
Features
- 8-Pin SO Package
- Buffered Voltage Output
- Built-In 2.048V Reference
- 500µV/LSB with 2.048V Full Scale
- 1/2 LSB Max DNL Error
- Guaranteed 12-Bit Monotonic
- Three-Wire Cascadable Serial Interface
- Wide Single Supply Range: VCC = 4.75V to 15.75V
- Low Power: ICC Typ = 350µA with 5V Supply
Typical Application
Description
The LTC1257 is a complete single supply, 12-bit voltage output D/A converter (DAC) in an SO-8 package. The LTC1257 includes an output buffer amplifier, 2.048V voltage reference and an easy to use three-wire cascadable serial interface. An external reference can be used to override the internal reference and extend the output voltage range to 12V. The power supply current is a low 350µA when operating from a 5V supply, making the LTC1257 ideal for battery-powered applications. The space-saving 8-pin SO package and operation with no external components provide the smallest 12-bit D/A system available.
N-8,SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1257CN8#PBF | PDIP | 8 | C | $5.60 | $4.40 |
| LTC1257CS8#PBF | SO | 8 | C | $5.90 | $4.65 |
| LTC1257CS8#TRPBF | SO | 8 | C | $4.71 | |
| LTC1257IN8#PBF | PDIP | 8 | I | $6.15 | $4.80 |
| LTC1257IS8#PBF | SO | 8 | I | $6.50 | $5.15 |
| LTC1257IS8#TRPBF | SO | 8 | I | $5.21 | |
| LTC1257CN8 | PDIP | 8 | C | $11.20 | $8.80 |
| LTC1257CS8 | SO | 8 | C | $11.80 | $9.30 |
| LTC1257CS8#TR | SO | 8 | C | $9.42 | |
| LTC1257IN8 | PDIP | 8 | I | $12.30 | $9.60 |
| LTC1257IS8 | SO | 8 | I | $13.00 | $10.30 |
| LTC1257IS8#TR | SO | 8 | I | $10.42 |
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.