Part A
AD1674JRZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4071 個数
- Package
- SOIC-28
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD1674JRZ and AD1674AR are functionally equivalent 12-bit successive-approximation ADCs sharing the same resolution, input architecture, and conversion timing, making the AD1674JRZ a viable replacement candidate for the AD1674AR in most designs. The primary distinction lies in grade and package options, so designers should confirm the operating temperature range and package footprint against their specific application requirements before substituting.
Resolution
High match
Input Type
High match
Package Type
Validation required
Operating Temperature
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD1674JRZ | AD1674AR | Why it matters |
|---|---|---|---|
| Operating Temperature Range | 0°C to 70°C | -40°C to 85°C | The commercial J grade and industrial A grade differ in temperature range, affecting suitability for harsh or industrial environments. |
| Package / Case | 28-Lead SOIC (Wide) | 28-Lead SOIC (Wide) | Package footprint and lead pitch determine PCB layout compatibility and drop-in substitutability. |
| Grade / Temperature Grade | Commercial (J) | Industrial (A) | The grade indicates tested performance limits and reliability class, which affects guaranteed specifications over temperature. |
| RoHS Compliance | RoHS Compliant | Non-RoHS (contains lead) | RoHS status affects regulatory compliance for products sold in regions with hazardous substance restrictions. |
| Resolution | 12 bits | 12 bits | Resolution determines the smallest analog increment the ADC can distinguish, directly impacting measurement precision. |
| Sampling Rate | 100 kSPS | 100 kSPS | Maximum throughput determines how fast the system can acquire signals and is critical for real-time applications. |
| Input Type | Single-Ended | Single-Ended | Input configuration affects signal conditioning circuitry and achievable noise immunity. |
| Supply Voltage | ±12 V or ±15 V | ±12 V or ±15 V | Supply requirements determine power supply design and compatibility with existing rails. |
| Mounting Type | Surface Mount | Surface Mount | Mounting style must match the assembly process and board design for proper placement. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD1674JRZ | AD1674AR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| 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 | 0°C ~ 70°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD1674JRZ and AD1674AR?
The AD1674JRZ and AD1674AR are both 12-bit, 100 kSPS successive-approximation analog-to-digital converters from Analog Devices. The primary difference is the operating temperature range and package grade: the AD1674JRZ is specified for commercial temperature range (0°C to +70°C) and comes in a 28-lead SOIC package, while the AD1674AR is specified for industrial temperature range (-40°C to +85°C) and comes in a 28-lead PDIP package. Both share the same core conversion architecture and electrical specifications at 25°C.
Are the AD1674JRZ and AD1674AR pin-compatible?
No. The AD1674JRZ uses a 28-lead SOIC (surface-mount) package, while the AD1674AR uses a 28-lead PDIP (through-hole) package. Although both have 28 pins and similar pin functions, the physical footprint and mounting style differ, so they are not drop-in replacements on the same PCB without a package conversion or board redesign.
Can the AD1674JRZ and AD1674AR be used interchangeably in a design?
They can be functionally interchangeable only if the operating temperature range and package requirements are satisfied. The AD1674AR supports the full industrial temperature range (-40°C to +85°C), while the AD1674JRZ is limited to the commercial range (0°C to +70°C). A design requiring industrial temperature operation must use the AD1674AR or an equivalent industrial-grade part. Additionally, the package difference (SOIC vs PDIP) prevents direct substitution without PCB modification.
What is the resolution and sampling rate of the AD1674JRZ and AD1674AR?
Both the AD1674JRZ and AD1674AR are 12-bit successive-approximation analog-to-digital converters with a maximum throughput rate of 100 kSPS (kilo-samples per second). These specifications are identical for both grades and are verified in the Analog Devices AD1674 datasheet.
Do the AD1674JRZ and AD1674AR have the same analog input ranges?
Yes. Both devices support the same analog input ranges: ±10 V, ±5 V, 0 V to +10 V, and 0 V to +20 V, configured via external pin strapping. The input range selection is identical across both temperature grades and package options, as specified in the AD1674 datasheet.
What are the power supply requirements for the AD1674JRZ and AD1674AR?
Both the AD1674JRZ and AD1674AR require dual power supplies of +5 V and ±12 V to ±15 V. The +5 V supply powers the digital interface, while the ±12 V to ±15 V supplies power the analog section. Power supply tolerances and current consumption specifications are the same for both grades and are detailed in the AD1674 datasheet.
Which grade should be selected for an industrial temperature environment?
The AD1674AR should be selected for industrial temperature environments because it is specified for operation from -40°C to +85°C. The AD1674JRZ is only specified for 0°C to +70°C and may not meet performance specifications outside that range. Always verify the target application's temperature requirements against the manufacturer's datasheet before selection.
Are the AD1674JRZ and AD1674AR RoHS compliant?
The AD1674JRZ is RoHS compliant, as indicated by the "Z" suffix in the part number, which denotes a lead-free, RoHS-compliant package. The AD1674AR does not carry the "Z" suffix and is not RoHS compliant by default; it uses a lead-containing finish. Designers requiring RoHS compliance should select the AD1674JRZ or verify the specific ordering code for a RoHS-compliant version of the industrial-grade part.
What is the maximum throughput rate and conversion time for these ADCs?
Both the AD1674JRZ and AD1674AR have a maximum throughput rate of 100 kSPS, which corresponds to a conversion time of 10 µs. The conversion time is fixed and independent of the package or temperature grade. These parameters are specified in the Analog Devices AD1674 datasheet and apply to both variants.