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 AD7243AR-REEL are functionally equivalent, sharing the same DAC architecture, resolution, package, and temperature range; the only distinction is the delivery format, with the REEL variant supplied on tape and reel for automated assembly. Either part number can serve as a direct replacement for the other in the same application.
Resolution and DAC Architecture
High match
Package Type
High match
Operating Temperature Range
High match
Supply Voltage
High match
Parts at a glance
Part B
AD7243AR-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5718 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 | AD7243AR-REEL | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the number of discrete output levels; identical resolution means equivalent precision for DAC output. |
| Number of DAC Channels | 1 | 1 | Single-channel architecture must match for functional substitutability in the target circuit. |
| Output Type | Voltage | Voltage | Voltage-output DACs interface directly with voltage-mode circuits; matching output type ensures drop-in compatibility. |
| Supply Voltage | ±15 V (dual) | ±15 V (dual) | Supply requirements must match the existing power rail design to avoid redesign of the power section. |
| Package / Case | SOIC-16 | SOIC-16 | Footprint and pinout must be identical for physical board compatibility. |
| Mounting Type | Surface Mount | Surface Mount | Assembly process and PCB land pattern depend on the mounting type; matching ensures manufacturability. |
| Interface Type | Serial (SPI-compatible) | Serial (SPI-compatible) | Digital communication protocol must match the host controller for correct data transfer. |
| Packaging / Delivery Form | Tube | Tape & Reel | Delivery form affects automated pick-and-place assembly; reel packaging suits high-volume production while tubes suit prototyping or low-volume runs. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Thermal range must cover the application environment for reliable operation. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7243ARZ | AD7243AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| 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) | ±1 (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 AD7243ARZ and AD7243AR-REEL, and how do they differ?
Both are the same Analog Devices AD7243 12-bit voltage-output DAC in a 16-lead SOIC package (R-16 suffix). The AD7243ARZ is the standard tube/tray ordering code, while AD7243AR-REEL is the same die and package supplied on tape-and-reel for automated assembly. The "Z" suffix in AD7243ARZ denotes RoHS-compliant lead finish, whereas AD7243AR-REEL is the non-Z (legacy) ordering variant; electrical performance is identical.
Are the AD7243ARZ and AD7243AR-REEL electrically and functionally interchangeable?
Yes. Both share the same AD7243 silicon, 12-bit resolution, on-chip output amplifier, and 16-lead SOIC footprint. The only differences are packaging format (tray vs. tape-and-reel) and the RoHS-compliant lead finish on the Z variant. They are drop-in compatible provided the assembly process accepts the respective packaging and the board is RoHS-compatible.
What is the resolution and output configuration of the AD7243?
The AD7243 is a 12-bit digital-to-analog converter with a buffered voltage output. It operates from a single +5 V supply (with an on-chip reference) or dual supplies, and provides a unipolar or bipolar output range depending on configuration. The output amplifier is integrated on-chip, eliminating the need for an external op-amp in most designs.
What digital interface does the AD7243 use?
The AD7243 uses a serial (SPI-compatible) 3-wire interface for loading the DAC register. Data is clocked in via SYNC, SCLK, and SDIN pins, making it suitable for microcontroller and DSP-based systems with limited I/O.
Does the AD7243ARZ's RoHS-compliant lead finish affect solderability or reflow profile?
The Z suffix indicates a RoHS-compliant (lead-free) termination finish. This requires a lead-free reflow profile per J-STD-020 and is compatible with SAC alloys. The AD7243AR-REEL (non-Z) uses the legacy tin-lead finish and should be soldered with a tin-lead profile. Mixing finishes on the same board requires process validation.
Can AD7243AR-REEL be used as a substitute for AD7243ARZ in a RoHS-compliant product?
No, not without qualification. AD7243AR-REEL carries the non-Z (tin-lead) finish and would violate RoHS compliance for a lead-free product. For a RoHS-compliant design, use the AD7243ARZ (or its tape-and-reel Z equivalent) to maintain compliance and consistent solderability.
What are the key package and temperature specifications shared by both variants?
Both are supplied in a 16-lead SOIC (R-16) package and are specified over the industrial temperature range of −40 °C to +85 °C. Package dimensions, pinout, and thermal characteristics are identical between the tray and tape-and-reel versions.
Which variant should be selected for high-volume automated assembly?
AD7243AR-REEL is supplied on tape-and-reel, which is the preferred format for pick-and-place automated SMT assembly. For RoHS-compliant high-volume lines, select the Z-suffix tape-and-reel ordering code. AD7243ARZ (tray) is better suited to low-volume or prototype builds.