Part A
AD7243ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3805 個数
- Package
- SOIC-16
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD7243ARZ and AD7243BR-REEL are functionally equivalent 12-bit voltage-output DACs in the same SOIC-16 package, differing only in grade-level accuracy and packaging format. The AD7243BR-REEL offers tighter DNL/INL specifications and reel packaging for automated assembly, making it a viable higher-precision substitute for the AD7243ARZ in most designs, provided the tighter linearity grade and reel format align with the target application and production process.
Resolution and Architecture
High match
Package and Pinout
High match
Accuracy Grade
Validation required
Packaging Format
Validation required
Parts at a glance
Part B
AD7243BR-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2453 個数
- Package
- SOIC-16
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7243ARZ | AD7243BR-REEL | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both parts provide 12-bit DAC resolution, so quantization step size is identical for either device. |
| Number of DAC Channels | 1 | 1 | Single-channel architecture means both are drop-in for one-output designs. |
| Output Voltage Range | ±10 V (bipolar) | ±10 V (bipolar) | Matching bipolar output span ensures the same analog signal swing in the target circuit. |
| Supply Voltage | ±15 V (dual) | ±15 V (dual) | Identical dual-supply requirement allows the same power rail design for either part. |
| Integral Nonlinearity (INL) | ±1 LSB max | ±0.5 LSB max | The B-grade offers tighter linearity, which improves absolute accuracy in precision applications. |
| Differential Nonlinearity (DNL) | ±1 LSB max | ±0.5 LSB max | Lower DNL in the B-grade guarantees better monotonicity and reduced missing-code risk. |
| Grade / Accuracy Class | A grade | B grade | The grade determines guaranteed accuracy specifications; B grade is tighter than A grade. |
| Package / Mounting | 20-lead SOIC (surface mount) | 20-lead SOIC (surface mount, tape and reel) | Same package footprint allows direct board replacement; reel packaging affects assembly handling only. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature range means both suit the same environmental conditions. |
| Interface Type | Serial (SPI-compatible) | Serial (SPI-compatible) | Same serial interface protocol ensures firmware and microcontroller compatibility for either part. |
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 | AD7243ARZ | AD7243BR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | DACPORT® | DACPORT® |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI | SPI |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | ±10.8V ~ 16.5V | ±10.8V ~ 16.5V |
| INL / DNL(LSB) | ±1 (Max), ±0.9 (Max) | ±0.5 (Max), ±0.9 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD7243ARZ and AD7243BR-REEL?
Both parts are the same AD7243 12-bit voltage-output DAC from Analog Devices, but they differ in grade and packaging. The AD7243ARZ is a tube-packaged device in the commercial A-grade (0°C to +70°C), while the AD7243BR-REEL is the higher-grade B version supplied in tape-and-reel format for automated assembly. The B grade offers tighter specifications, notably better relative accuracy and differential nonlinearity than the A grade.
What is the resolution and architecture of the AD7243?
The AD7243 is a 12-bit digital-to-analog converter with a voltage output. It integrates a DAC, output amplifier, and reference on a single monolithic CMOS chip, providing a complete voltage-output solution in a compact package.
What output voltage ranges does the AD7243 support?
The AD7243 provides selectable output ranges of 0 V to +5 V, 0 V to +10 V, ±5 V, and ±10 V, configurable via external pin strapping. This flexibility allows it to interface with a wide variety of analog systems without additional external components.
What is the difference in accuracy between the A and B grades?
The B grade (AD7243BR-REEL) offers tighter relative accuracy and differential nonlinearity specifications than the A grade (AD7243ARZ). Designers requiring the highest linearity should select the B grade, while the A grade is suitable for applications with less stringent accuracy requirements.
What is the operating temperature range for these devices?
Both the AD7243ARZ and AD7243BR-REEL are specified for the commercial temperature range of 0°C to +70°C. They are not rated for industrial or extended temperature operation.
What package type do these devices use?
Both the AD7243ARZ and AD7243BR-REEL are offered in a 16-lead SOIC package. The AD7243ARZ is supplied in tubes, while the AD7243BR-REEL is supplied in tape-and-reel format for high-volume automated placement.
What is the digital interface of the AD7243?
The AD7243 features a serial digital interface compatible with SPI, QSPI, and MICROWIRE protocols, allowing easy connection to microcontrollers and DSPs. Data is loaded into the DAC via a 12-bit serial word.
Can the AD7243ARZ and AD7243BR-REEL be used interchangeably?
Yes, both devices are functionally and pin-compatible, sharing the same 16-lead SOIC footprint and serial interface. However, because the B grade offers tighter accuracy specifications, substituting the A grade in a design requiring B-grade performance may degrade system accuracy. Always verify that the selected grade meets the application's linearity requirements.