DocumentationDatasheet
Application Note
- AN13 - High Speed Comparator Techniques
- AN14 - Designs for High Performance Voltage-to-Frequency Converters
- AN17 - Considerations for Successive Approximation A ->D Converters
- AN23 - Micropower Circuits for Signal Conditioning
- AN29 - Some Thoughts on DC-DC Converters
- AN42 - Voltage Reference Circuit Collection
- AN43 - Bridge Circuits
- AN62 - Data Acquisition Circuit Collection
- AN7 - Some Techniques for Direct Digitization of Transducer Outputs
- AN74 - Component and Measurement Advances Ensure 16-Bit DAC Settling Time
- AN82 - Understanding and Applying Voltage References
- AN86 - A Standards Lab Grade 20-Bit DAC with 0.1ppm/° Drift: The Dedicated Art of Digitizing One Part Per Million
Design Note
- DN10 - Electrically Isolating Data Acquisition Systems
- DN138 - Micropower ADC and DAC in SO-8 Give PCs a 12-Bit Analog Interface
- DN19 - A Two Wire Isolated and Powered 10-Bit Data Acquisition System
- DN29 - A Single Supply RS232 Interface for Bipolar A to D Converters
- DN294 - 250ksps, 16-Bit Micropower ADC Offers an Excellent Combination of SIze, Power and Speed
- DN35 - 12-Bit 8-Channel Data Acquisition System Interfaces to IBM PC Serial Port
Reliability Data
LT Journal
- Aug 1998 Component and Measurement Advances Ensure 16-Bit DAC Settling Time (Part One)
- March 2009 - How to Choose a Voltage Reference
- May 2000 Dual Operational Amplifier Combines 16-Bit Precision with High Speed
cad_symbol
Features
- Mil-Perf Documents at Defense Supply Center Columbus:
Click Here for Military Performance (JAN Class S) Datasheet
Click Here for Military Performance DLA 5962-88600 Drawing
Click Here for Military Performance DLA 5962-88762 Drawing - Ultralow Drift: 5ppm/°C Max Slope
- Very Low Noise: P-P (0.1Hz to 10Hz)
- 100% Noise Tested
- Pin Compatible with Most Bandgap Reference Applications, Including REF01, REF02, LM368, MC1400 and MC1404 with Greatly Improved Stability, Noise and Drift
- Trimmed Output Voltage
- Operates in Series or Shunt Mode
- Output Sinks and Sources in Series Mode
- >100dB Ripple Rejection
- Minimum Input/Output Differential of 1V
- Available in 5-Lead Can, N8 and S8 Packages
Typical Application
Description
The LT1021 is a precision reference with ultralow drift and noise, extremely good long term stability and almost total immunity to input voltage variations. The reference output will both source and sink up to 10mA. Three voltages are available: 5V, 7V and 10V. The 7V and 10V units can be used as shunt regulators (two-terminal zeners) with the same precision characteristics as the three terminal connection. Special care has been taken to minimize thermal regulation effects and temperature induced hysteresis.
The LT1021 references are based on a buried zener diode structure that eliminates noise and stability problems associated with surface breakdown devices. Further, a subsurface zener exhibits better temperature drift and time stability than even the best bandgap references.
Unique circuit design makes the LT1021 the first IC reference to offer ultralow drift without the use of high power on-chip heaters.
The LT1021-7 uses no resistive divider to set output voltage, and therefore exhibits the best long term stability and temperature hysteresis. The LT1021-5 and LT1021- 10 are intended for systems requiring a precise 5V or 10V reference with an initial tolerance as low as ±0.05%.
TO-5,N-8,SO-8,,METAL CAN-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT1021BCH-5 | METAL CANS | 8 | C | $8.40 | $6.90 |
| LT1021BCN8-10#PBF | PDIP | 8 | C | $6.42 | $5.25 |
| LT1021BCN8-5#PBF | PDIP | 8 | C | $6.42 | $5.25 |
| LT1021BCN8-7#PBF | PDIP | 8 | C | $6.42 | $5.25 |
| LT1021CCH-5 | METAL CANS | 8 | C | $6.25 | $5.15 |
| LT1021CCN8-10#PBF | PDIP | 8 | C | $4.25 | $3.50 |
| LT1021CCN8-5#PBF | PDIP | 8 | C | $4.25 | $3.50 |
| LT1021CIN8-10#PBF | PDIP | 8 | I | $5.75 | $4.65 |
| LT1021CIN8-5#PBF | PDIP | 8 | I | $5.75 | $4.65 |
| LT1021DCN8-10#PBF | PDIP | 8 | C | $3.17 | $2.65 |
| LT1021DCN8-5#PBF | PDIP | 8 | C | $3.17 | $2.65 |
| LT1021DCN8-7#PBF | PDIP | 8 | C | $2.08 | $1.75 |
| LT1021DCS8-10#PBF | SO | 8 | C | $3.92 | $3.20 |
| LT1021DCS8-10#TRPBF | SO | 8 | C | $3.26 | |
| LT1021DCS8-5#PBF | SO | 8 | C | $3.92 | $3.20 |
| LT1021DCS8-5#TRPBF | SO | 8 | C | $3.26 | |
| LT1021DCS8-7#PBF | SO | 8 | C | $3.92 | $3.20 |
| LT1021DCS8-7#TRPBF | SO | 8 | C | $3.26 | |
| LT1021DIN8-10#PBF | PDIP | 8 | I | $4.25 | $3.50 |
| LT1021DIN8-5#PBF | PDIP | 8 | I | $4.25 | $3.50 |
| LT1021BMH-10 | METAL CANS | 8 | M | $18.25 | $15.00 |
| LT1021CMH-5 | METAL CANS | 8 | M | $10.00 | $8.20 |
| LT1021BMH-5 | 8 | M | $18.25 | $15.00 | |
| LT1021BCN8-10 | PDIP | 8 | C | $12.84 | $10.50 |
| LT1021BCN8-5 | PDIP | 8 | C | $12.84 | $10.50 |
| LT1021BCN8-7 | PDIP | 8 | C | $12.84 | $10.50 |
| LT1021CCN8-10 | PDIP | 8 | C | $8.50 | $7.00 |
| LT1021CCN8-5 | PDIP | 8 | C | $8.50 | $7.00 |
| LT1021CIN8-10 | PDIP | 8 | I | $11.50 | $9.30 |
| LT1021CIN8-5 | PDIP | 8 | I | $11.50 | $9.30 |
| LT1021DCN8-10 | PDIP | 8 | C | $6.34 | $5.30 |
| LT1021DCN8-5 | PDIP | 8 | C | $6.34 | $5.30 |
| LT1021DCN8-7 | PDIP | 8 | C | $4.16 | $3.50 |
| LT1021DCS8-10 | SO | 8 | C | $7.84 | $6.40 |
| LT1021DCS8-10#TR | SO | 8 | C | $6.52 | |
| LT1021DCS8-5 | SO | 8 | C | $7.84 | $6.40 |
| LT1021DCS8-5#TR | SO | 8 | C | $6.52 | |
| LT1021DCS8-7 | SO | 8 | C | $7.84 | $6.40 |
| LT1021DCS8-7#TR | SO | 8 | C | $6.52 | |
| LT1021DIN8-10 | PDIP | 8 | I | $8.50 | $7.00 |
| LT1021DIN8-5 | PDIP | 8 | I | $8.50 | $7.00 |
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.