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DAC7554IDGSG4 Equivalent & Substitute Parts
Part Overview
The DAC7554IDGSG4 is a 12-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, featuring four independent D/A conversion channels with buffered voltage output. The device operates across a wide supply voltage range of 2.7V to 5.5V for both analog and digital supplies, making it suitable for mixed-signal applications requiring precision analog output generation.
The DAC7554IDGSG4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this converter.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Number of D/A Converters | 4 |
| Settling Time | 5µs |
| Output Type | Voltage - Buffered |
| Data Interface | SPI, DSP |
| Reference Type | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V |
| INL/DNL (LSB) | ±0.35, ±0.08 |
| Architecture | String DAC |
| Operating Temperature | -40°C ~ 105°C |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DAC7554IDGSG4 is determined by strict equivalence across the following critical parameters:
- Resolution and Channel Count: 12-bit resolution with 4 independent D/A converters
- Output Characteristics: Buffered voltage output with external reference capability
- Interface Protocol: SPI and DSP data interface compatibility
- Supply Voltage Range: Dual supply operation at 2.7V to 5.5V for both analog and digital domains
- Accuracy Specifications: INL/DNL performance of ±0.35 LSB and ±0.08 LSB respectively
- Thermal Performance: Operating temperature range of -40°C to 105°C
- Package Compatibility: 10-VSSOP surface mount package with identical pinout and mechanical dimensions
- Regulatory Compliance: ROHS3 compliance and MSL Level 1 rating
The DAC7554IDGS qualifies as a direct substitute based on identical electrical specifications, package configuration, and regulatory certifications.
Parameter Comparison
| Parameter | DAC7554IDGSG4 (Main Part) | DAC7554IDGS (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Identical |
| Number of Bits | 12 | 12 | Identical |
| Number of D/A Converters | 4 | 4 | Identical |
| Settling Time | 5µs | 5µs | Identical |
| Output Type | Voltage - Buffered | Voltage - Buffered | Identical |
| Data Interface | SPI, DSP | SPI, DSP | Identical |
| Reference Type | External | External | Identical |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V | Identical |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V | Identical |
| INL/DNL (LSB) | ±0.35, ±0.08 | ±0.35, ±0.08 | Identical |
| Architecture | String DAC | String DAC | Identical |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C | Identical |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Product Status | Discontinued at DiGi Electronics | Active | Substitute is Active |
Engineering Selection Recommendations
The DAC7554IDGS is a direct functional and mechanical equivalent to the DAC7554IDGSG4. Both devices share identical electrical specifications, package configuration, and regulatory compliance certifications. The primary distinction is product status: the DAC7554IDGSG4 is discontinued, while the DAC7554IDGS maintains active production status.
Selection of the DAC7554IDGS as a replacement is supported by:
- Complete electrical parameter equivalence across all specified metrics
- Identical 10-VSSOP package footprint and pinout configuration
- Matching ROHS3 compliance and MSL Level 1 rating
- Continuous manufacturing availability and supply chain support
- No design modifications or board-level changes required for substitution
Frequently Asked Questions (FAQ)
Q: Can the DAC7554IDGS be used as a direct replacement for the DAC7554IDGSG4 without circuit modifications?
A: Yes. The DAC7554IDGS is electrically and mechanically identical to the DAC7554IDGSG4. No schematic or PCB layout changes are required. Pin assignments, signal timing, and supply requirements are identical.
Q: What is the difference between the DAC7554IDGSG4 and DAC7554IDGS?
A: The devices are functionally equivalent. The primary difference is packaging: DAC7554IDGSG4 uses standard packaging, while DAC7554IDGS is supplied in tube packaging. Both use the 10-VSSOP package with identical electrical performance.
Q: Are there any compliance or certification differences between these parts?
A: No. Both parts maintain ROHS3 compliance and MSL Level 1 rating. Regulatory certifications and environmental compliance are identical.
Q: Why is the DAC7554IDGSG4 discontinued?
A: Product discontinuation decisions are manufacturer-driven and typically reflect market demand, product line consolidation, or transition to newer product families. The DAC7554IDGS remains in active production and provides equivalent functionality.
Q: What is the current availability of the DAC7554IDGS?
A: The DAC7554IDGS is in active production with 1774 pieces available in new original stock condition.
Q: Are the supply voltage ranges identical between these parts?
A: Yes. Both the DAC7554IDGSG4 and DAC7554IDGS operate with analog and digital supply voltages of 2.7V to 5.5V, supporting identical circuit designs.
Q: Do both parts support the same data interfaces?
A: Yes. Both devices support SPI and DSP data interfaces with identical protocol specifications and timing characteristics.
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