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DAC7625PB Equivalent & Substitute Parts
Part Overview
The DAC7625PB is a 12-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, designed for data acquisition applications requiring four independent voltage output channels. This component features parallel data interface, external reference capability, and buffered voltage outputs with ±5V analog and 5V digital supply operation.
The DAC7625PB is classified as obsolete. Identifying functionally equivalent substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity when original inventory becomes unavailable.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Number of Bits | 12 |
| Number of D/A Converters | 4 |
| Settling Time | 10µs |
| Output Type | Voltage - Buffered |
| Data Interface | Parallel |
| Reference Type | External |
| Voltage - Supply, Analog | ±5V |
| Voltage - Supply, Digital | 5V |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the DAC7625PB are identified based on matching the following critical electrical and mechanical parameters:
- 12-bit resolution with 4 independent D/A converters
- 10µs settling time performance
- Buffered voltage output configuration
- Parallel data interface
- External reference input capability
- ±5V analog and 5V digital supply voltages
- ±1 LSB maximum INL/DNL specifications
- R-2R converter architecture
- -40°C to 85°C operating temperature range
- ROHS3 compliance and REACH unaffected status
The DAC7625UB maintains identical electrical specifications and functional performance. The primary difference is packaging format: the DAC7625PB uses through-hole 28-DIP mounting, while the DAC7625UB uses surface-mount 28-SOIC technology. Both parts share the same base product number (DAC7625) and are manufactured by Texas Instruments.
Parameter Comparison
| Parameter | DAC7625PB | DAC7625UB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 4 | 4 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Data Interface | Parallel | Parallel |
| Reference Type | External | External |
| Voltage - Supply, Analog | ±5V | ±5V |
| Voltage - Supply, Digital | 5V | 5V |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) | ±1 (Max), ±1 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 28-DIP (0.600", 15.24mm) | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Through Hole | Surface Mount |
| Product Status | Obsolete | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The DAC7625UB is the direct functional equivalent to the DAC7625PB. Both components deliver identical electrical performance across all specified parameters and maintain equivalent compliance certifications (ROHS3 Compliant, REACH Unaffected).
Selection between these parts depends on board-level design requirements:
DAC7625PB (Through-Hole DIP): Suitable for legacy through-hole PCB designs, breadboard prototyping, and applications where through-hole mounting is already established in the assembly process.
DAC7625UB (Surface-Mount SOIC): Recommended for new designs and PCB redesigns. Surface-mount technology offers reduced board space, improved thermal characteristics, and compatibility with modern automated assembly processes. The DAC7625UB is currently in active production status, ensuring long-term availability and supply chain stability.
Pin-to-pin compatibility requires verification against specific PCB layout and assembly capabilities. Footprint conversion from DIP to SOIC necessitates PCB redesign.
Frequently Asked Questions (FAQ)
Q: Can the DAC7625UB directly replace the DAC7625PB without circuit modification?
A: Electrical functionality is identical. However, physical replacement requires PCB redesign due to different package formats (28-DIP versus 28-SOIC). Pin assignments are equivalent, but mounting footprints are incompatible.
Q: What is the primary reason to substitute the DAC7625PB?
A: The DAC7625PB is obsolete. The DAC7625UB is the active production equivalent, ensuring continued availability and supply chain support.
Q: Are there performance differences between the DAC7625PB and DAC7625UB?
A: No. Both parts maintain identical electrical specifications: 12-bit resolution, 4 converters, 10µs settling time, ±1 LSB INL/DNL, and equivalent supply voltage requirements.
Q: Which package format should be selected for new designs?
A: The DAC7625UB (28-SOIC surface-mount) is recommended for new designs. Surface-mount technology provides superior integration density and compatibility with contemporary manufacturing processes.
Q: Are both parts RoHS compliant?
A: Yes. Both the DAC7625PB and DAC7625UB are ROHS3 Compliant and REACH Unaffected.
Q: What is the moisture sensitivity level difference?
A: The DAC7625PB has MSL 1 (Unlimited). The DAC7625UB has MSL 3 (168 Hours). This affects storage and handling requirements for the surface-mount variant.
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