DATA SHEET
REF5025-HT Low-Noise, Very-Low-Drift, Precision Voltage Reference
1 Features
- Low Temperature Drift: 40 ppm/°C
- Low Noise: 3 μVPP/V
- High Output Current: ±7 mA
- Low Temperature Drift:
5 ppm/°C (Maximum) - Available in Military (–55°C to +210°C) Temperature Range (1)
- Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
1. Custom temperature ranges available
2 Applications
- 16-Bit Data Acquisition Systems
- ATE Equipment
- Industrial Process Control
- Medical Instrumentation
- Optical Control Systems
- Precision Instrumentation
- Controlled Baseline
- One Assembly and Test Site
- One Fabrication Site
3 Description
The REF5025-HT is a low-noise, very low-drift, very high precision voltage references. This reference is capable of both sinking and sourcing, and is very robust with regard to line and load changes.
Excellent temperature drift and high accuracy are achieved using proprietary design techniques. These features, combined with very low noise, make the REF5025-HT suitable for use in high-precision data acquisition systems.
The device is offered in HKJ and HKQ packages, as well as Known-Good-Die (KGD) form, and is specified from –55°C to +210°C.
Device Information(a)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| REF5025-HT | CFP (HKJ)(8) | 6.9 mm × 5.65 mm |
| CFP (HKQ) (8) | 6.9 mm × 5.65 mm | |
| XCEPT (KGD) (0) | 2.04 mm × 1.676 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Simplified Schematic
4 Revision History
Changes from E Revision (November 2013) to F Revision
- Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
- Deleted Ordering Information table, see POA at the end of the data sheetGo
Changes from D Revision (April 2012) to E Revision
- Added KGD2 package option Go
5 Pin Configuration and Functions
HKJ Package
8-Pin CFP
Top View
DNC = Do not connect
NC = No internal connection
NC = No internal connection
HKQ Package
8-Pin CFP
Top View
HKQ is a dead bug performed version of HKJ
Pin Functions
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| DNC | 1, 8 | — | Do not connect |
| GND | 4 | Power | System ground |
| NC | 7 | — | No internal connection |
| TEMP | 3 | O | Temperature monitoring pin provides a temperature-dependent voltage output |
| TRIM/NR | 5 | I | Output adjustment and noise reduction input. Connecting 1 μF to this pin creates a low-pass filter at the bandgap and reduce output noise |
| VIN | 2 | Power | Power supply voltage. Range from VOUT + 0.2 V up to 18 V. TI recommends a bypass capacitor with a value from 1 μF up to 10 μF |
| VOUT | 6 | O | Very accurate, factory-trimmed voltage output. TI recommends a bypass capacitor with a value from 1 μF up to 50 μF with ESR between 1 and 1.5 Ω |
Bare Die Information
| DIE THICKNESS | BACKSIDE FINISH | BACKSIDE POTENTIAL | BOND PAD METALLIZATION COMPOSITION | BOND PAD THICKNESS |
|---|---|---|---|---|
| 15 mils | Silicon with backgrind | GND | Al-Cu (0.5%) | 598 nm |
Bond Pad Coordinates in Microns
| DESCRIPTION | PAD NUMBER | X MIN | Y MIN | X MAX | Y MAX |
|---|---|---|---|---|---|
| NC | 1 | 35.45 | 46.55 | 111.45 | 122.55 |
| NC | 2 | 496.75 | 56.55 | 572.75 | 132.55 |
| VIN | 3 | 607.45 | 56.55 | 683.45 | 132.55 |
| NC | 4 | 637.9 | 39.4 | 1013.9 | 115.4 |
| TEMP | 5 | 1660.1 | 47.2 | 1736.1 | 123.2 |
| GND | 6 | 1770.9 | 38.85 | 1847.05 | 115 |
| GND | 7 | 1877.1 | 59.6 | 2016.8 | 135.6 |
| TRIM/NR | 8 | 1904.65 | 1553.4 | 1980.65 | 1629.4 |
| NC | 9 | 1782.15 | 1553.4 | 1858.15 | 1629.4 |
| VOUT | 10 | 1080.2 | 1559.85 | 1219.9 | 1636 |
| VOUT | 11 | 880.25 | 1543.55 | 956.25 | 1619.55 |
| NC | 12 | 35.45 | 1553.45 | 111.45 | 1629.45 |
