DAC8820IBDBR Equivalent & Substitute Parts

Part Overview

The DAC8820IBDBR is a 16-bit digital-to-analog converter manufactured by Texas Instruments, housed in a 28-SSOP surface mount package. This multiplying DAC features current output with external reference capability and operates across a wide supply voltage range of 2.7V to 5.5V for both analog and digital supplies. The device is actively produced and RoHS3 compliant, making it suitable for industrial and commercial data acquisition applications requiring precision analog signal generation from digital inputs.

Substitute parts are necessary when the original DAC8820IBDBR is unavailable due to supply constraints, inventory limitations, or when alternative manufacturers' components meet the electrical and mechanical requirements of the application.

Substiute Parts

DAC8820IBDBR

Texas InstrumentsIn Stock: 755DAC8820IBDBR Datasheet

Current PartRFQ

LTC1597-1ACG#PBF

Analog Devices Inc.In Stock: 2981LTC1597-1ACG#PBF Datasheet

MFR RecommendedRFQ

LTC1597-1AIG#PBF

Analog Devices Inc.In Stock: 2173LTC1597-1AIG#PBF Datasheet

MFR RecommendedRFQ

LTC1597-1BCG#PBF

Analog Devices Inc.In Stock: 1163LTC1597-1BCG#PBF Datasheet

MFR RecommendedRFQ

LTC1597ACG#PBF

Analog Devices Inc.In Stock: 2299LTC1597ACG#PBF Datasheet

MFR RecommendedRFQ

LTC1597AIG#PBF

Analog Devices Inc.In Stock: 1386LTC1597AIG#PBF Datasheet

MFR RecommendedRFQ

LTC1597BCG#PBF

Analog Devices Inc.In Stock: 2152LTC1597BCG#PBF Datasheet

MFR RecommendedRFQ

LTC1597BIG#PBF

Analog Devices Inc.In Stock: 1296LTC1597BIG#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DAC8820IBDBR are qualified based on the following critical parameters that determine functional compatibility:

Electrical Compatibility Criteria:

• 16-bit resolution (Number of Bits)
• Single converter configuration (Number of D/A Converters = 1)
• Current output, unbuffered topology (Output Type)
• Parallel data interface (Data Interface)
• External reference capability (Reference Type)
• 28-SSOP package footprint (Package / Case)
• Surface mount mounting type (Mounting Type)

Supply Voltage Compatibility: The DAC8820IBDBR operates with analog and digital supplies from 2.7V to 5.5V. Substitute parts must support operation at 5V, which falls within this range. Substitute parts specified for 5V operation are compatible with applications using the DAC8820IBDBR's supply voltage range.

Temperature Range Considerations: The DAC8820IBDBR operates from -40°C to 85°C. Substitute parts are available in two temperature grades: 0°C to 70°C (commercial grade) and -40°C to 85°C (industrial grade). Selection depends on application requirements.

All substitute parts listed are Analog Devices LTC1597 series devices, which meet the electrical and mechanical requirements specified above.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products from Analog Devices Inc. and maintain ROHS3 compliance, meeting regulatory requirements equivalent to the DAC8820IBDBR.

Temperature Grade Selection:

For applications requiring the full industrial temperature range of -40°C to 85°C, select parts with the "I" grade designation: LTC1597-1AIG#PBF, LTC1597AIG#PBF, or LTC1597BIG#PBF.

For applications operating within the commercial temperature range of 0°C to 70°C, commercial grade parts with "C" designation are available: LTC1597-1ACG#PBF, LTC1597-1BCG#PBF, LTC1597ACG#PBF, or LTC1597BCG#PBF.

Accuracy Grade Selection:

LTC1597 parts are available in two accuracy grades. Parts designated with "A" (LTC1597-1ACG#PBF, LTC1597-1AIG#PBF, LTC1597ACG#PBF, LTC1597AIG#PBF) feature INL/DNL specifications of ±0.35 LSB and ±0.2 LSB respectively. Parts designated with "B" (LTC1597-1BCG#PBF, LTC1597BCG#PBF, LTC1597BIG#PBF) feature INL/DNL specifications of ±2 LSB (Max) and ±1 LSB (Max) respectively.

The DAC8820IBDBR specifies INL/DNL of ±2 LSB (Max) and ±0.5 LSB, placing it between the two LTC1597 accuracy grades.

Frequently Asked Questions (FAQ)

Q: Are all LTC1597 variants pin-compatible with the DAC8820IBDBR?

A: Yes. All substitute parts use the 28-SSOP package with identical 0.209" width and 5.30mm dimensions, ensuring mechanical and electrical pin compatibility on PCBs designed for the DAC8820IBDBR.

Q: Can I use a commercial temperature grade part (0°C to 70°C) in an application requiring -40°C to 85°C operation?

A: No. Commercial grade parts are not specified for operation below 0°C or above 70°C. For applications requiring the full -40°C to 85°C range, use industrial grade parts designated with "I" (LTC1597-1AIG#PBF, LTC1597AIG#PBF, or LTC1597BIG#PBF).

Q: What is the difference between "A" and "B" grade LTC1597 parts?

A: Grade "A" parts offer tighter INL/DNL accuracy specifications (±0.35 LSB and ±0.2 LSB) compared to Grade "B" parts (±2 LSB Max and ±1 LSB Max). Selection depends on application accuracy requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All LTC1597 variants listed are RoHS3 compliant, matching the compliance status of the DAC8820IBDBR.

Q: What is the settling time difference between the DAC8820IBDBR and LTC1597 substitutes?

A: The DAC8820IBDBR specifies 500ns typical settling time, while LTC1597 parts specify 1µs typical settling time. Applications with settling time-critical requirements must account for this difference.

Q: Can I substitute the DAC8820IBDBR with any LTC1597 variant?

A: Substitution is possible when the application's temperature range and accuracy requirements are met. For -40°C to 85°C operation, use industrial grade parts. For applications tolerating ±2 LSB INL/DNL, Grade "B" parts are suitable. For tighter accuracy, use Grade "A" parts.