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DAC7744ECG4 Equivalent & Substitute Parts
Part Overview
The DAC7744ECG4 is a 16-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, featuring four independent D/A conversion channels with voltage-buffered outputs. This component is designed for data acquisition applications requiring parallel data interface and external voltage reference configuration.
The DAC7744ECG4 has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | DAC7744ECG4 |
| Manufacturer | Texas Instruments |
| Number of Bits | 16 |
| Number of D/A Converters | 4 |
| Output Type | Voltage - Buffered |
| Data Interface | Parallel |
| Reference Type | External |
| Settling Time | 11µs |
| Voltage - Supply, Analog | ±14.25V ~ 15.75V |
| Voltage - Supply, Digital | 5V |
| INL/DNL (LSB) | ±3 (Max), ±1 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 48-BSSOP (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution of the DAC7744ECG4 is determined by strict equivalence across the following critical parameters:
- Resolution and Channel Count: 16-bit resolution with 4 independent D/A converters
- Output Configuration: Voltage-buffered output type
- Interface Protocol: Parallel data interface
- Reference Architecture: External voltage reference requirement
- Electrical Performance: Settling time of 11µs, INL/DNL specifications of ±3 LSB (Max) and ±1 LSB (Max)
- Power Supply Requirements: Dual analog supply (±14.25V ~ 15.75V) and 5V digital supply
- Package Specification: 48-BSSOP surface mount package with 0.295" width (7.50mm)
- Environmental Compliance: ROHS3 compliance and MSL Level 3 rating
The DAC7744EC qualifies as a direct substitute based on identical electrical specifications, package configuration, and compliance certifications. The primary distinction is product status and packaging format.
Parameter Comparison
| Parameter | DAC7744ECG4 (Main Part) | DAC7744EC (Substitute) |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 4 | 4 |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Data Interface | Parallel | Parallel |
| Reference Type | External | External |
| Settling Time | 11µs | 11µs |
| Voltage - Supply, Analog | ±14.25V ~ 15.75V | ±14.25V ~ 15.75V |
| Voltage - Supply, Digital | 5V | 5V |
| INL/DNL (LSB) | ±3 (Max), ±1 (Max) | ±3 (Max), ±1 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 48-BSSOP (0.295", 7.50mm Width) | 48-BSSOP (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| Product Status | Discontinued at DiGi Electronics | Active |
| Packaging Format | Tube | Tube |
Engineering Selection Recommendations
The DAC7744EC is the appropriate substitute for the discontinued DAC7744ECG4. Both components are manufactured by Texas Instruments and maintain identical electrical specifications, package configuration, and compliance certifications.
The DAC7744EC carries active product status, ensuring ongoing availability and manufacturer support. Both parts comply with ROHS3 requirements and carry equivalent moisture sensitivity ratings, making them suitable for equivalent application environments.
Selection of the DAC7744EC as a replacement requires no circuit redesign, as all electrical parameters, pin configurations, and supply requirements remain unchanged from the original DAC7744ECG4 specification.
Frequently Asked Questions (FAQ)
Q: Can the DAC7744EC be used as a direct replacement for the DAC7744ECG4?
A: Yes. The DAC7744EC is electrically and mechanically identical to the DAC7744ECG4. Both components feature 16-bit resolution, 4 D/A converters, identical settling time, matching power supply requirements, and the same 48-BSSOP package configuration. No circuit modifications are required.
Q: What is the primary difference between these two part numbers?
A: The DAC7744ECG4 is discontinued at DiGi Electronics, while the DAC7744EC maintains active product status. Both parts are manufactured by Texas Instruments with identical specifications.
Q: Are the package dimensions identical?
A: Yes. Both the DAC7744ECG4 and DAC7744EC use the 48-BSSOP package with 0.295" width (7.50mm). Surface mount footprints are identical, and no PCB layout modifications are necessary.
Q: Do both parts meet the same compliance standards?
A: Yes. Both components are ROHS3 compliant and carry MSL Level 3 (168 Hours) moisture sensitivity ratings. Environmental and regulatory compliance requirements are equivalent.
Q: What are the critical electrical parameters that define substitution compatibility?
A: Substitution compatibility is determined by: 16-bit resolution, 4 independent D/A converters, voltage-buffered output, parallel data interface, external voltage reference, 11µs settling time, ±14.25V ~ 15.75V analog supply, 5V digital supply, and R-2R architecture. The DAC7744EC matches all these specifications.
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