AD7245AAR Equivalent & Substitute Parts

Part Overview

The AD7245AAR is a 12-bit Digital to Analog Converter (DAC) manufactured by Analog Devices Inc., housed in a 24-SOIC surface mount package. This component features voltage-buffered output, parallel data interface, and internal reference architecture. The AD7245AAR is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts must maintain functional equivalence across critical electrical and mechanical parameters to ensure direct replacement capability.

Key Parameters

Parameter	Value
Resolution	12 Bits
Number of D/A Converters	1
Output Type	Voltage - Buffered
Data Interface	Parallel
Reference Type	Internal
Architecture	R-2R
Package / Case	24-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
INL/DNL	±1 LSB (Max)

Substitute Part Grouping Explanation

Substitute parts for the AD7245AAR are classified into two categories based on substitution compatibility:

Direct Substitutes maintain identical electrical specifications and operating parameters. These parts are pin-compatible and functionally equivalent without design modifications.

Similar Substitutes share core functionality (12-bit resolution, voltage-buffered output, parallel interface, R-2R architecture, 24-SOIC package) but differ in specific electrical parameters. These parts require design verification for the following parameter variations:

Settling Time: AD7245AAR specifies 7µs; MAX507 series specifies 5µs
Analog Supply Voltage Range: AD7245AAR operates ±10.8V ~ 16.5V; MAX507 series operates ±11.4V ~ 15.75V
Digital Supply Voltage Range: AD7245AAR operates 10.8V ~ 16.5V; MAX507 series operates 11.4V ~ 15.75V
Operating Temperature Range: AD7245AAR operates -40°C ~ 85°C; MAX507BCWG+ operates 0°C ~ 70°C; MAX507BEWG+ and MAX507BEWG+T operate -40°C ~ 85°C

Parameter Comparison

Part Number	Manufacturer	Product Status	Resolution (Bits)	Settling Time (µs)	Analog Supply (V)	Digital Supply (V)	Operating Temp (°C)	Package	Packaging Type
AD7245AAR	Analog Devices Inc.	Obsolete	12	7	±10.8 ~ 16.5	10.8 ~ 16.5	-40 ~ 85	24-SOIC	Tube
AD7245AARZ	Analog Devices Inc.	Active	12	7	±10.8 ~ 16.5	10.8 ~ 16.5	-40 ~ 85	24-SOIC	Tube
MAX507BCWG+	Analog Devices Inc./Maxim Integrated	Active	12	5	±11.4 ~ 15.75	11.4 ~ 15.75	0 ~ 70	24-SOIC	Tube
MAX507BCWG+T	Analog Devices Inc./Maxim Integrated	Active	12	5	±11.4 ~ 15.75	11.4 ~ 15.75	-40 ~ 85	24-SOIC	Tape & Reel
MAX507BEWG+	Analog Devices Inc./Maxim Integrated	Active	12	5	±11.4 ~ 15.75	11.4 ~ 15.75	-40 ~ 85	24-SOIC	Tube
MAX507BEWG+T	Analog Devices Inc./Maxim Integrated	Active	12	5	±11.4 ~ 15.75	11.4 ~ 15.75	-40 ~ 85	24-SOIC	Tape & Reel

Engineering Selection Recommendations

Direct Replacement (No Design Modification Required):

AD7245AARZ is the recommended direct substitute for AD7245AAR. Both parts maintain identical electrical specifications, operating ranges, and performance characteristics. AD7245AARZ carries Active product status and is ROHS3 compliant, providing long-term availability and regulatory compliance advantages over the obsolete AD7245AAR.

Conditional Substitution (Design Verification Required):

MAX507 series parts (MAX507BCWG+, MAX507BCWG+T, MAX507BEWG+, MAX507BEWG+T) are functionally equivalent 12-bit DACs with identical package and core architecture. However, the following parameter differences require design verification:

Faster settling time (5µs vs. 7µs) may improve system performance but requires timing analysis confirmation
Narrower supply voltage ranges (±11.4V ~ 15.75V vs. ±10.8V ~ 16.5V) require verification that system supply voltages remain within MAX507 specifications
MAX507BCWG+ operates at reduced temperature range (0°C ~ 70°C), unsuitable for -40°C ~ 85°C applications; MAX507BCWG+T, MAX507BEWG+, and MAX507BEWG+T support full -40°C ~ 85°C range

All substitute parts are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can AD7245AARZ directly replace AD7245AAR without circuit modifications?

A: Yes. AD7245AARZ is a direct functional equivalent with identical electrical specifications, operating ranges, and performance parameters. No circuit modifications are required. The primary difference is product status: AD7245AARZ is Active while AD7245AAR is Obsolete.

Q: What are the key differences between AD7245AARZ and MAX507 series substitutes?

A: Both maintain 12-bit resolution, voltage-buffered output, parallel interface, and R-2R architecture in 24-SOIC packages. Key differences are: (1) Settling time: AD7245AARZ specifies 7µs; MAX507 specifies 5µs; (2) Supply voltage ranges: AD7245AARZ operates ±10.8V ~ 16.5V; MAX507 operates ±11.4V ~ 15.75V; (3) Temperature range: MAX507BCWG+ operates 0°C ~ 70°C only; other MAX507 variants and AD7245AARZ operate -40°C ~ 85°C.

Q: Which MAX507 variant should be selected for -40°C ~ 85°C applications?

A: MAX507BCWG+T, MAX507BEWG+, or MAX507BEWG+T all support -40°C ~ 85°C operating range. Selection depends on packaging requirements: MAX507BCWG+T and MAX507BEWG+T are supplied in Tape & Reel format; MAX507BEWG+ is supplied in Tube format.

Q: Are all substitute parts RoHS compliant?

A: Yes. AD7245AARZ, MAX507BCWG+, MAX507BCWG+T, MAX507BEWG+, and MAX507BEWG+T are all ROHS3 compliant. All parts are REACH unaffected.

Q: What packaging options are available for substitute parts?

A: AD7245AARZ is supplied in Tube packaging. MAX507BCWG+ and MAX507BEWG+ are supplied in Tube packaging. MAX507BCWG+T and MAX507BEWG+T are supplied in Tape & Reel format. All parts use identical 24-SOIC (0.295", 7.50mm Width) surface mount package.

Q: Can MAX507BCWG+ be used in applications requiring -40°C ~ 85°C operation?

A: No. MAX507BCWG+ operates only at 0°C ~ 70°C. For full -40°C ~ 85°C temperature range applications, use MAX507BCWG+T, MAX507BEWG+, MAX507BEWG+T, or AD7245AARZ.

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