LTC1655 - 16-Bit Rail-to-Rail Micropower DACs in SO-8 Package
Datasheet 
DocumentationDatasheet
Reliability Data
Product Selector Card
LT Journal
cad_symbol
Features
- 16-Bit Monotonicity Over Temperature
- Deglitched Rail-to-Rail Voltage Output
- SO-8 Package
- ICC(TYP): 600µA
- Internal Reference: 2.048V (LTC1655)
1.25V (LTC1655L) - Maximum DNL Error: ±1LSB
- Settling Time: 20µS to ±1LSB
- 750kHz Max Update Rate
- Power-On Reset to Zero Volts
- 3-Wire Cascadable Serial Interface
- Low Cost
- Pin Compatible Upgrade for LTC1451 12-Bit DAC Family
Typical Application
Description
The LTC1655/LTC1655L are rail-to-rail voltage output, 16-bit digital-to-analog converters in an SO-8 package. They include an output buffer and a reference. The 3-wire serial interface is compatible with SPI/QSPI and MICROWIRE protocols. The CLK input has a Schmitt trigger that allows direct optocoupler interface.The LTC1655 has an onboard 2.048V reference that can be overdriven to a higher voltage. The output swings from 0V to 4.096V when using the internal reference. The typical power dissipation is 3.0mW on a single 5V supply.
The LTC1655L has an onboard 1.25V reference that can be overdriven to a higher voltage. The output swings from 0V to 2.5V when using the internal reference. The typical power dissipation is 1.8mW on a single 3V supply.
The LTC1655/LTC1655L are pin compatible with Linear Technology’s 12-bit VOUT DAC family, allowing an easy upgrade path. They are the only buffered 16-bit DACs in an SO-8 package and they include an onboard reference for standalone performance.
N-8,SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1655CN8#PBF | PDIP | 8 | C | $9.25 | $7.95 |
| LTC1655CS8#PBF | SO | 8 | C | $9.25 | $7.95 |
| LTC1655CS8#TRPBF | SO | 8 | C | $8.01 | |
| LTC1655IN8#PBF | PDIP | 8 | I | $10.15 | $8.75 |
| LTC1655IS8#PBF | SO | 8 | I | $10.15 | $8.75 |
| LTC1655IS8#TRPBF | SO | 8 | I | $8.81 | |
| LTC1655LCN8#PBF | PDIP | 8 | C | $10.25 | $8.80 |
| LTC1655LCS8#PBF | SO | 8 | C | $10.25 | $8.80 |
| LTC1655LCS8#TRPBF | SO | 8 | C | $8.86 | |
| LTC1655LIN8#PBF | PDIP | 8 | I | $11.15 | $9.60 |
| LTC1655LIS8#PBF | SO | 8 | I | $11.15 | $9.60 |
| LTC1655LIS8#TRPBF | SO | 8 | I | $9.66 | |
| LTC1655CN8 | PDIP | 8 | C | $18.50 | $15.90 |
| LTC1655CS8 | SO | 8 | C | $18.50 | $15.90 |
| LTC1655CS8#TR | SO | 8 | C | $16.02 | |
| LTC1655IN8 | PDIP | 8 | I | $20.30 | $17.50 |
| LTC1655IS8 | SO | 8 | I | $20.30 | $17.50 |
| LTC1655IS8#TR | SO | 8 | I | $17.62 | |
| LTC1655LCN8 | PDIP | 8 | C | $20.50 | $17.60 |
| LTC1655LCS8 | SO | 8 | C | $20.50 | $17.60 |
| LTC1655LCS8#TR | SO | 8 | C | $17.72 | |
| LTC1655LIN8 | PDIP | 8 | I | $22.30 | $19.20 |
| LTC1655LIS8 | SO | 8 | I | $22.30 | $19.20 |
| LTC1655LIS8#TR | SO | 8 | I | $19.32 |
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.