Part A
AD5314BRMZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3984 個数
- Package
- MSOP-10
- 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 AD5314BRMZ and AD5312ARM are both dual-channel 10-bit voltage-output DACs from Analog Devices with matching resolution, channel count, and MSOP-10 footprint, making the AD5312ARM a viable functional replacement candidate for the AD5314BRMZ in many designs. However, the AD5314BRMZ offers a higher reference input range and a wider specified supply voltage span, so designers must validate reference drive, supply headroom, and interface timing against the target application before committing to the substitution.
Resolution
High match
Channel Count
High match
Reference Input Range
Validation required
Supply Voltage Range
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 | AD5314BRMZ | AD5312ARM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 2 | Determines how many independent analog outputs are available; a 4-channel part cannot be substituted where 2 channels suffice without leaving unused pins, and a 2-channel part cannot replace a 4-channel design. |
| Resolution | 10 bits | 10 bits | Resolution sets the smallest output voltage step (LSB size); matching resolution is essential for equivalent output accuracy and control granularity. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible | SPI / QSPI / MICROWIRE / DSP compatible | The serial interface must match the host controller's protocol; both parts share the same 3-wire serial interface, simplifying drop-in replacement. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | The supply range defines compatibility with the system rail; identical ranges allow the same power design to be reused. |
| Reference Input | External | External | Both require an external reference, so the output full-scale range is set by the same external reference voltage, preserving transfer function compatibility. |
| Package / Mounting | 10-Lead MSOP (RMZ) | 10-Lead MSOP (RM) | Package and pinout must match for board-level interchangeability; both use the same 10-lead MSOP footprint, enabling direct PCB substitution. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | The temperature range must cover the application environment; identical ratings ensure the same thermal margin in the target design. |
| INL (Integral Nonlinearity) | ±0.5 LSB max | ±0.5 LSB max | INL defines the maximum deviation from an ideal transfer curve; matching INL ensures equivalent accuracy performance in precision applications. |
| Settling Time | 6 µs | 6 µs | Settling time determines how fast the DAC output reaches its final value; identical settling times preserve dynamic response in control loops. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5314BRMZ | AD5312ARM |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 10 | - |
| Number of D/A Converters | 4 | - |
| Settling Time | 9µs | - |
| Output Type | Voltage - Buffered | - |
| Differential Output | No | - |
| Data Interface | SPI, DSP | - |
| Reference Type | External | - |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | - |
| INL / DNL(LSB) | ±0.5, ±0.05 | - |
| Architecture | String DAC | - |
| Operating Temperature | -40°C ~ 105°C | - |
Frequently asked questions
What are the key differences between the AD5314BRMZ and AD5312ARM?
The AD5314BRMZ is a quad 10-bit DAC in a 10-lead MSOP package, while the AD5312ARM is a dual 10-bit DAC in a 10-lead MSOP package. The AD5314 provides four DAC channels, whereas the AD5312 provides two DAC channels. Both are members of the Analog Devices AD53xx family and share similar serial interface and reference architecture.
Are the AD5314BRMZ and AD5312ARM pin-compatible?
No. Although both devices are offered in a 10-lead MSOP package, the AD5314BRMZ uses the package pins for four DAC outputs and associated reference/control functions, while the AD5312ARM uses the same package footprint for two DAC outputs. The pin functions and internal channel assignments differ, so they are not direct pin-for-pin replacements.
What is the resolution of the AD5314BRMZ and AD5312ARM?
Both the AD5314BRMZ and AD5312ARM are 10-bit digital-to-analog converters, providing 1024 discrete output levels over the selected output range.
What supply voltage range do the AD5314BRMZ and AD5312ARM support?
Both devices operate from a single 2.5 V to 5.5 V supply, as specified in the Analog Devices AD5314 and AD5312 datasheets. This wide supply range supports both 3 V and 5 V system designs.
What serial interface do the AD5314BRMZ and AD5312ARM use?
Both devices use a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The interface includes SYNC, SCLK, and DIN pins and supports daisy-chain operation.
Can the AD5312ARM be used as a drop-in replacement for the AD5314BRMZ in an existing design?
No. The AD5312ARM has only two DAC channels, while the AD5314BRMZ has four. A design requiring four independent DAC outputs cannot use the AD5312ARM without significant redesign. Additionally, the pin functions and channel addressing differ between the two devices.
What is the package type for the AD5314BRMZ and AD5312ARM?
Both the AD5314BRMZ and AD5312ARM are supplied in a 10-lead MSOP (Mini Small Outline Package). The "RM" suffix in both part numbers indicates the MSOP package option.
Do the AD5314BRMZ and AD5312ARM have the same reference input configuration?
Both devices provide an external reference input pin and share a similar reference architecture, allowing the output voltage range to be set by the applied reference voltage. However, because the AD5314BRMZ has four DAC channels and the AD5312ARM has two, the reference loading and channel-to-channel matching considerations differ in multi-channel applications.