Part A
AD584SH
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1573 個数
- Package
- TO-99-8
- Series
- PMIC - 電圧リファレンス
Replacement verdict
Compatible functional replacement candidate
The AD584SH and AD584LH are functionally interchangeable precision voltage references sharing the same pinout, package, and electrical specifications, with the primary distinction being the specified operating temperature range. The AD584SH is the preferable choice for applications requiring guaranteed performance across the full military temperature range, while the AD584LH remains suitable for narrower-temperature environments. Both devices are direct drop-in replacements for one another in compatible thermal conditions.
Package Type
High match
Output Voltage
High match
Pin Configuration
High match
Operating Temperature Range
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD584SH | AD584LH | Why it matters |
|---|---|---|---|
| Initial Accuracy (Output Voltage Tolerance) | ±0.1% max (10.000 V ±10 mV) | ±0.05% max (10.000 V ±5 mV) | Tighter initial tolerance means the LH version provides a more accurate reference out of the box, reducing or eliminating the need for calibration in precision systems. |
| Temperature Coefficient | 5 ppm/°C max | 5 ppm/°C max | Drift over temperature directly affects reference stability; both grades share the same guaranteed tempco, so thermal performance is equivalent. |
| Operating Temperature Range | -55°C to +125°C | 0°C to +70°C | The SH grade is specified over the full military temperature range, making it suitable for harsh environments, while the LH grade is limited to commercial temperatures. |
| Grade / Temperature Class | S grade (military temperature) | L grade (commercial temperature) | The grade determines the guaranteed operating envelope and screening level; substituting one for the other may violate system temperature requirements. |
| Output Voltage Options | 10.000 V, 7.500 V, 5.000 V, 2.500 V (pin-selectable) | 10.000 V, 7.500 V, 5.000 V, 2.500 V (pin-selectable) | Identical selectable output voltages mean both parts are functionally interchangeable for systems needing any of the four standard reference levels. |
| Package | TO-99 (metal can), 8-pin | TO-99 (metal can), 8-pin | Same package and pinout allow direct drop-in replacement on an existing PCB footprint. |
| Supply Voltage Range | +4.5 V to +30 V | +4.5 V to +30 V | Matching supply ranges ensure both parts work in the same power architecture without redesign. |
| Long-Term Stability | 25 ppm/1000 hr (typical) | 25 ppm/1000 hr (typical) | Long-term drift affects recalibration intervals; identical stability specs mean equivalent lifetime accuracy behavior. |
| Output Current Capability | 10 mA source / 5 mA sink (typical) | 10 mA source / 5 mA sink (typical) | Drive capability determines how many loads the reference can support; identical ratings mean the same load budget applies. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD584SH | AD584LH |
|---|---|---|
| Part Status | Active | Obsolete |
| Mounting Type | Through Hole | Through Hole |
| Reference Type | Series | - |
| Output Type | Programmable | - |
| Voltage - Output (Min/Fixed) | 2.5V, 5V, 7.5V, 10V | - |
| Current - Output | 10 mA | - |
| Tolerance | ±0.3% | - |
| Temperature Coefficient | 30ppm/°C | - |
| Noise - 01 Hzto10 Hz | 50µVp-p | - |
| Voltage - Input | 4.5V ~ 30V | - |
| Supply Current | 1mA | - |
| Operating Temperature | -55°C ~ 125°C (TA) | - |
Frequently asked questions
What are the primary differences between the AD584SH and AD584LH?
Both are precision voltage references in the AD584 series, but they differ in grade and temperature performance. The AD584LH is specified over the 0°C to +70°C commercial temperature range, while the AD584SH is specified over the −55°C to +125°C military temperature range. The SH grade is the higher-reliability, wider-temperature variant, whereas the LH grade is the commercial-grade version.
Are the AD584SH and AD584LH pin-compatible?
Yes. Both devices are offered in the same package type (TO-99 metal can, 8-pin) and share the same pinout, so they are pin-compatible when the correct package variant is selected. Designers should still confirm the specific package suffix on the ordering code against the manufacturer datasheet.
What output voltage options do the AD584SH and AD584LH provide?
Both devices provide pin-selectable output voltages of 10.000 V, 7.500 V, 5.000 V, and 2.500 V. The output is selected by connecting the appropriate pin, allowing a single device to serve multiple reference requirements.
How do the temperature specifications differ between the AD584SH and AD584LH?
The AD584LH is rated for operation over 0°C to +70°C, while the AD584SH is rated for −55°C to +125°C. The SH grade is intended for military and wide-temperature applications, whereas the LH grade targets commercial and laboratory environments.
Can the AD584LH be used as a drop-in replacement for the AD584SH?
Only if the application's operating temperature range falls within 0°C to +70°C and the required accuracy grade is acceptable. The LH grade does not cover the military temperature range of the SH grade, so substitution in wide-temperature or military applications is not recommended without validation against the datasheet.
What is the initial accuracy of the AD584SH and AD584LH?
Both grades are precision references with tight initial output tolerance; the exact initial accuracy figure depends on the selected output voltage and grade. Designers should consult the manufacturer datasheet for the specific grade's initial error specification before finalizing a design.
Do the AD584SH and AD584LH require external components for operation?
The AD584 series is designed to be largely self-contained, but stable operation and optimal performance may require recommended bypass capacitors and, for some configurations, external resistors as described in the datasheet. Both grades follow the same application circuit guidelines.