Part A
AD7243ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3805 Stückzahl
- Package
- SOIC-16
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Not a drop-in replacement
The AD7243ARZ and AD7244JR are not drop-in replacements for one another. Although both are 12-bit voltage-output DACs from Analog Devices, they differ in resolution architecture, reference configuration, package footprint, and interface timing, so the AD7244JR cannot be substituted directly into a design laid out for the AD7243ARZ without schematic and layout changes.
Different output architecture
Different reference configuration
Different package footprint
Different interface timing
Parts at a glance
Part B
AD7244JR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5710 Stückzahl
- Package
- SOIC-28
- Series
- Data Acquisition von Digital to Analog Converters (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 | AD7244JR | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 14 bit | Higher resolution provides finer output steps, which directly affects achievable accuracy and precision in the analog output. |
| Number of DAC Channels | 1 | 2 | Channel count determines how many independent analog outputs are available; a two-channel part can replace two single-channel parts. |
| Output Voltage Range | ±10 V (bipolar) | ±10 V (bipolar) | The output span must match the system's signal requirements for direct functional substitution. |
| Reference Type | Internal | Internal | An internal reference simplifies design by eliminating external reference circuitry, affecting board space and cost. |
| Supply Voltage | ±15 V | ±15 V | Supply requirements must be compatible with the existing power rails for a drop-in replacement. |
| Package / Mounting | 20-Lead SOIC (Surface Mount) | 28-Lead SOIC (Surface Mount) | Package footprint and pin count must match the PCB layout for physical substitutability. |
| Interface Type | Serial (SPI-compatible) | Serial (SPI-compatible) | The digital interface must be compatible with the host controller for direct communication without redesign. |
| Operating Temperature Range | -40 °C to +85 °C | 0 °C to +70 °C | The temperature range must cover the application environment; the wider industrial range offers more robustness. |
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 | AD7244JR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 14 |
| Number of D/A Converters | 1 | 2 |
| Settling Time | 10µs | 4µs |
| 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 | ±5V |
| INL / DNL(LSB) | ±1 (Max), ±0.9 (Max) | ±2 (Max), ±1 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Series | DACPORT® | - |
Frequently asked questions
What are the primary differences between the AD7243ARZ and AD7244JR?
The AD7243ARZ is a 12-bit voltage-output DAC with an internal reference and output amplifier, specified for operation over the industrial temperature range and housed in a 16-lead SOIC package. The AD7244JR is a 12-bit voltage-output DAC in a 16-lead SOIC package specified over the commercial temperature range (0°C to 70°C). The AD7243ARZ offers tighter grade specifications and a wider operating temperature range, while the AD7244JR is a lower-cost commercial-grade alternative.
Are the AD7243ARZ and AD7244JR pin-compatible?
Both devices are offered in a 16-lead SOIC package with the same pinout, allowing them to be used in the same PCB footprint. However, designers should verify the specific grade and temperature specifications against the target application before substituting one for the other.
What is the resolution and architecture of these DACs?
Both the AD7243ARZ and AD7244JR are 12-bit voltage-output digital-to-analog converters featuring an internal reference and an on-chip output amplifier. They are designed for single-supply or dual-supply operation and provide a buffered voltage output suitable for industrial control and instrumentation applications.
What temperature range does each part support?
The AD7243ARZ is specified for the industrial temperature range of −40°C to +85°C. The AD7244JR is specified for the commercial temperature range of 0°C to +70°C. The AD7243ARZ is therefore better suited for applications requiring operation over extended temperature extremes.
Can the AD7244JR be used as a drop-in replacement for the AD7243ARZ?
Because both parts share the same 16-lead SOIC package and pinout, the AD7244JR can physically fit the same footprint. However, the AD7244JR is rated only for the commercial temperature range (0°C to +70°C), so it should not be substituted in designs that require industrial temperature operation. The substitution should be validated against the application's temperature and accuracy requirements.
What are the key grade and accuracy differences between the two parts?
The AD7243ARZ is an A-grade device with tighter specified linearity and accuracy limits compared to the AD7244JR, which is a J-grade commercial part. Designers requiring tighter DNL/INL and offset specifications over the industrial temperature range should select the AD7243ARZ, while the AD7244JR is appropriate for less demanding commercial applications.
What supply voltage and reference configuration do these DACs use?
Both the AD7243ARZ and AD7244JR integrate an internal reference and output amplifier, and they operate from standard supply voltages as specified in the manufacturer datasheet. The internal reference eliminates the need for an external reference in many designs, simplifying the analog signal chain. Consult the official datasheet for exact supply and reference voltage limits.