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DAC7611UB/2K5 Equivalent & Substitute Parts
Part Overview
The DAC7611UB/2K5 is a 12-bit digital-to-analog converter manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This component provides voltage-buffered output with SPI interface control and internal voltage reference, operating across the industrial temperature range of -40°C to 85°C. The part is currently active in production and ROHS3 compliant. Substitute parts are identified when equivalent functional specifications and package compatibility exist, enabling design flexibility and supply chain alternatives.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resolution | 12 Bit |
| Number of D/A Converters | 1 |
| Output Type | Voltage - Buffered |
| Data Interface | SPI |
| Reference Type | Internal |
| Voltage - Supply, Analog | 5V |
| Voltage - Supply, Digital | 5V |
| INL/DNL | ±0.25, ±0.25 LSB |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution validity is determined by matching the following critical parameters: 12-bit resolution, single D/A converter configuration, voltage-buffered output, SPI data interface capability, internal reference type, 8-SOIC package footprint, surface mount mounting, and -40°C to 85°C operating temperature range. All identified substitute parts meet these core requirements.
The substitute parts are grouped into two categories based on supply voltage specifications:
Category 1 - Wide Supply Voltage Range (2.7V ~ 5.5V): AD8300ARZ and AD8300ARZ-REEL provide flexible supply voltage operation beyond the fixed 5V requirement of the main part.
Category 2 - Fixed 5V Supply (5V): DAC8512FSZ and DAC8512FSZ-REEL7 maintain the same fixed 5V supply voltage specification as the DAC7611UB/2K5.
Parameter Comparison
| Parameter | DAC7611UB/2K5 | AD8300ARZ | AD8300ARZ-REEL | DAC8512FSZ | DAC8512FSZ-REEL7 |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Number of Bits | 12 | 12 | 12 | 12 | 12 |
| Number of D/A Converters | 1 | 1 | 1 | 1 | 1 |
| Settling Time (Typ) | 7µs | 14µs | 14µs | 16µs | 16µs |
| Output Type | Voltage - Buffered | Voltage - Buffered | Voltage - Buffered | Voltage - Buffered | Voltage - Buffered |
| Data Interface | SPI | SPI, DSP | SPI, DSP | SPI, DSP | SPI, DSP |
| Reference Type | Internal | Internal | Internal | Internal | Internal |
| Voltage - Supply, Analog | 5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 5V | 5V |
| Voltage - Supply, Digital | 5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 5V | 5V |
| INL/DNL (LSB) | ±0.25, ±0.25 | ±0.5, ±0.5 | ±0.5, ±0.5 | ±0.75, ±0.75 | ±0.75, ±0.75 |
| Architecture | R-2R | R-2R | R-2R | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All substitute parts maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original DAC7611UB/2K5.
For applications requiring fixed 5V supply operation identical to the DAC7611UB/2K5, DAC8512FSZ and DAC8512FSZ-REEL7 provide direct voltage compatibility. These parts accept identical supply voltages and maintain the same R-2R architecture.
For applications permitting flexible supply voltage operation between 2.7V and 5.5V, AD8300ARZ and AD8300ARZ-REEL offer extended supply range capability. These parts support both SPI and DSP data interfaces, providing additional interface flexibility.
Packaging selection between tube (standard) and tape & reel (TR) or cut tape & Digi-Reel (CT) formats depends on production volume and assembly requirements. The DAC7611UB/2K5 is supplied in tape & reel format; equivalent packaging options are available across all substitute parts.
Moisture sensitivity differs between the main part (MSL 3, 168 hours) and all substitute parts (MSL 1, unlimited). Substitute parts offer superior moisture tolerance for storage and handling in humid environments.
Frequently Asked Questions (FAQ)
Q: Can AD8300ARZ be used as a direct replacement for DAC7611UB/2K5 in a 5V-only system?
A: Yes. AD8300ARZ operates within the 5V supply range and maintains all critical functional parameters: 12-bit resolution, single D/A converter, voltage-buffered output, SPI interface, internal reference, R-2R architecture, and 8-SOIC package. The wider supply voltage range (2.7V ~ 5.5V) does not prevent operation at fixed 5V.
Q: What is the impact of different settling times on substitution?
A: Settling time differences (DAC7611UB/2K5 at 7µs typical versus substitute parts at 14µs or 16µs typical) affect output stabilization speed. Applications requiring faster settling must account for the longer stabilization periods of substitute parts. This is a performance consideration, not a compatibility issue.
Q: How do INL/DNL differences affect part selection?
A: The DAC7611UB/2K5 specifies ±0.25 LSB INL/DNL, while substitute parts specify ±0.5 or ±0.75 LSB. Lower INL/DNL values indicate better linearity. Applications with strict linearity requirements must evaluate whether substitute part specifications meet system accuracy needs.
Q: Are the packaging options (tube, tape & reel, cut tape & Digi-Reel) electrically equivalent?
A: Yes. Packaging format affects only handling, storage, and assembly processes. Electrical and functional specifications remain identical across all packaging options for the same base part number.
Q: What advantage do substitute parts offer regarding moisture sensitivity?
A: All substitute parts carry MSL 1 (unlimited moisture sensitivity level) compared to the DAC7611UB/2K5 MSL 3 (168 hours). MSL 1 parts tolerate indefinite storage in standard humidity conditions without baking requirements, simplifying inventory management and reducing preparation time before assembly.
Q: Can DAC8512FSZ be used in applications requiring DSP interface support?
A: Yes. DAC8512FSZ supports both SPI and DSP data interfaces, providing interface flexibility beyond the DAC7611UB/2K5 SPI-only specification. Existing SPI implementations remain fully compatible.
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