Part A
AD1674BRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2727 PCS
- Package
- SOIC-28
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD1674AR-REEL is a functionally compatible replacement candidate for the AD1674BRZ, sharing the same 12-bit successive-approximation ADC architecture, 28-pin SOIC footprint, and 100 kSPS sampling rate. The primary distinction lies in grade-level specifications, where the AD1674BRZ offers tighter linearity and accuracy tolerances, while the AD1674AR-REEL provides a cost-effective alternative for applications with relaxed precision requirements. Designers should validate system-level performance when substituting across grades.
Resolution and Architecture
High match
Package Type
High match
Accuracy Grade
Validation required
Sampling Rate
High match
Parts at a glance
Part B
AD1674AR-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3099 PCS
- Package
- SOIC-28
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD1674BRZ | AD1674AR-REEL | Why it matters |
|---|---|---|---|
| Grade / Temperature Range | Industrial grade, -40°C to +85°C | Commercial grade, -40°C to +85°C | Grade determines guaranteed performance limits and is critical for industrial versus commercial applications. |
| INL (Integral Nonlinearity) | ±1/2 LSB max | ±1 LSB max | INL directly affects absolute accuracy of the ADC conversion; tighter INL yields higher precision measurements. |
| DNL (Differential Nonlinearity) | ±3/4 LSB max | ±1 LSB max | DNL guarantees no missing codes and monotonicity; tighter DNL ensures better linearity in critical conversions. |
| Resolution | 12 bits | 12 bits | Resolution defines the number of discrete output codes and the fundamental quantization step of the ADC. |
| Conversion Time | 10 µs max | 10 µs max | Conversion time determines the maximum sampling rate achievable in the target system. |
| Input Voltage Range | ±10 V, ±5 V, 0 to +10 V, 0 to +20 V | ±10 V, ±5 V, 0 to +10 V, 0 to +20 V | Input range flexibility allows direct interfacing with various sensor and signal chain voltage levels. |
| Package / Mounting | 28-Lead SOIC (Wide), Surface Mount | 28-Lead SOIC (Wide), Surface Mount | Package and mounting type must match the PCB footprint and assembly process for drop-in compatibility. |
| Supply Voltage | ±12 V or ±15 V analog, +5 V digital | ±12 V or ±15 V analog, +5 V digital | Supply requirements dictate power supply design and overall system power budget. |
| Interface Type | Parallel (8/12-bit microprocessor interface) | Parallel (8/12-bit microprocessor interface) | Interface type must match the host controller bus to ensure direct connectivity without glue logic. |
| Power Consumption | 385 mW typ | 385 mW typ | Power consumption affects thermal design and suitability for power-sensitive or portable systems. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD1674BRZ | AD1674AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 100k | 100k |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | Parallel | Parallel |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | ±11.4V ~ 16.5V | ±11.4V ~ 16.5V |
| Voltage - Supply, Digital | 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD1674BRZ and AD1674AR-REEL?
The AD1674BRZ is a 12-bit, 100 kSPS analog-to-digital converter in a 28-lead SOIC package with a commercial temperature range of 0°C to +70°C and a grade B accuracy specification. The AD1674AR-REEL is the same 12-bit, 100 kSPS ADC in a 28-lead SOIC package, but it is the grade A accuracy version supplied in tape-and-reel packaging for automated assembly. The primary differences are accuracy grade and packaging format.
Are the AD1674BRZ and AD1674AR-REEL pin-compatible?
Yes. Both devices are offered in the same 28-lead SOIC package and share the same pinout, so they are pin-compatible when the package and temperature grade requirements of the target design are met.
Can the AD1674BRZ be used as a drop-in replacement for the AD1674AR-REEL?
In many designs, yes, because both are 12-bit, 100 kSPS ADCs with the same pinout and package. However, the AD1674BRZ has a tighter grade B accuracy specification than the AD1674AR-REEL grade A version, so the replacement is generally acceptable only after confirming that the system does not require the specific grade A error limits or reel packaging.
What is the resolution and sampling rate of the AD1674BRZ and AD1674AR-REEL?
Both devices are 12-bit successive-approximation analog-to-digital converters with a maximum sampling rate of 100 kSPS.
Do the AD1674BRZ and AD1674AR-REEL have the same input voltage range?
Yes. Both parts support the standard AD1674 analog input ranges, including bipolar ±10 V, ±5 V, and unipolar 0 V to +10 V, 0 V to +20 V, configured by pin strapping.
What is the difference in accuracy grade between the AD1674BRZ and AD1674AR-REEL?
The AD1674BRZ is the grade B version, which has tighter linearity and accuracy specifications than the AD1674AR-REEL, which is the grade A version. The exact error limits should be taken from the official Analog Devices AD1674 datasheet for the specific grade.
Are the AD1674BRZ and AD1674AR-REEL available in the same package type?
Yes. Both are available in a 28-lead SOIC package. The AD1674AR-REEL is specifically supplied in tape-and-reel format, while the AD1674BRZ is typically supplied in standard tube or tray packaging depending on the distributor.
Which part should be selected for a new design, AD1674BRZ or AD1674AR-REEL?
Selection depends on the required accuracy grade and assembly method. Choose the AD1674BRZ when the tighter grade B accuracy is needed and reel packaging is not required. Choose the AD1674AR-REEL when grade A accuracy is sufficient and tape-and-reel packaging is preferred for automated production.