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DAC7615UB Equivalent & Substitute Parts
Part Overview
The DAC7615UB is a 12-bit digital-to-analog converter manufactured by Texas Instruments, designed for data acquisition applications requiring quad-channel voltage output conversion. This active product features SPI serial interface control, external reference capability, and buffered voltage outputs suitable for industrial and instrumentation systems. The component is housed in a 16-SOIC surface-mount package and operates across the -40°C to 85°C temperature range. Substitute parts are identified when electrical specifications, package compatibility, and functional parameters align with the original design requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Number of D/A Converters | 4 |
| Settling Time | 10µs |
| Output Type | Voltage - Buffered |
| Data Interface | SPI |
| Reference Type | External |
| Voltage - Supply, Analog | ±5V |
| Voltage - Supply, Digital | 5V |
| INL/DNL (LSB) | ±1 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the DAC7615UB is determined by strict alignment of the following critical parameters:
- Resolution & Channel Count: 12-bit resolution with 4 independent D/A converters
- Interface Protocol: SPI serial input compatibility
- Output Configuration: Buffered voltage output with external reference input
- Supply Voltage Requirements: ±5V analog supply and 5V digital supply
- Linearity Specifications: INL/DNL performance of ±1 LSB maximum
- Settling Time: 10µs conversion settling time
- Package Compatibility: 16-SOIC surface-mount package with identical pinout and thermal characteristics
- Temperature Range: -40°C to 85°C operating specification
The DAC7614UB meets all specified electrical and mechanical parameters, qualifying as a parametric equivalent for direct substitution in applications where the DAC7615UB is specified.
Parameter Comparison
| Parameter | DAC7615UB (Texas Instruments) | DAC7614UB (Burr Brown) | Match Status |
|---|---|---|---|
| Number of Bits | 12 | 12 | Identical |
| Number of D/A Converters | 4 | 4 | Identical |
| Settling Time | 10µs | 10µs | Identical |
| Output Type | Voltage - Buffered | Voltage - Buffered | Identical |
| Data Interface | SPI | SPI | Identical |
| Reference Type | External | External | Identical |
| Voltage - Supply, Analog | ±5V | ±5V | Identical |
| Voltage - Supply, Digital | 5V | 5V | Identical |
| INL/DNL (LSB) | ±1 (Max) | ±1 (Max) | Identical |
| Architecture | R-2R | R-2R | Identical |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | Identical |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
Engineering Selection Recommendations
Both the DAC7615UB and DAC7614UB are active products with equivalent electrical and mechanical specifications. The DAC7615UB is manufactured by Texas Instruments and carries ROHS3 compliance with REACH unaffected status. The DAC7614UB is manufactured by Burr Brown and carries identical ECCN and HTSUS classifications. Selection between these components should be based on supply chain availability, procurement lead times, and organizational component qualification requirements. Both devices are suitable for applications requiring 12-bit quad-channel digital-to-analog conversion with SPI interface control and external reference configuration.
Frequently Asked Questions (FAQ)
Q: Can the DAC7614UB directly replace the DAC7615UB in existing designs?
A: Yes. Both components share identical electrical specifications across all critical parameters including resolution, channel count, settling time, supply voltages, linearity performance, and package configuration. No circuit modifications are required for direct substitution.
Q: Are there any differences in the 16-SOIC package between these components?
A: No. Both components use the identical 16-SOIC package with 0.295" width and 7.50mm body dimension. Pin assignments and thermal characteristics are equivalent, enabling direct PCB compatibility.
Q: What is the significance of the R-2R architecture specification?
A: The R-2R ladder network architecture is the conversion method used in both devices to achieve the specified 12-bit resolution and ±1 LSB linearity performance. This architecture is identical between the DAC7615UB and DAC7614UB.
Q: Do both components require the same external reference configuration?
A: Yes. Both devices utilize external reference input, requiring identical reference voltage supply design and filtering considerations in the application circuit.
Q: Are there compliance or certification differences between the two parts?
A: The DAC7615UB carries ROHS3 compliance certification. Both components share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications for export and tariff purposes.
Q: What is the operating temperature range for both components?
A: Both the DAC7615UB and DAC7614UB operate across the -40°C to 85°C temperature range, suitable for industrial and extended-temperature applications.
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