Part A
AD5314BRMZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3984 ПКС
- Package
- MSOP-10
- Series
- Сбор данных - цифровые в аналоговые преобразователи (DAC)
Replacement verdict
Not a drop-in replacement
The AD5314BRMZ and AD5311BRM are not drop-in replacements for each other. The AD5314BRMZ is a quad 10-bit DAC with an SPI interface, while the AD5311BRM is a single 10-bit DAC with an I²C interface. They differ in channel count, digital interface, package footprint, and reference architecture, so a direct substitution is not possible without redesigning the surrounding circuitry and firmware.
Different channel count
Different digital interface
Different package footprint
Different reference architecture
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 | AD5311BRM | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Channel count determines how many independent analog outputs the system can drive; a 4-channel part cannot be substituted where a single-channel device is required without redesigning the output stage. |
| Resolution | 10 bits | 10 bits | Resolution sets the smallest output voltage step and thus the achievable precision of the analog output. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible | I2C compatible (2-wire) | The digital interface must match the host controller; SPI and I2C are not pin- or protocol-compatible, so substitution requires firmware and wiring changes. |
| Package | 10-lead MSOP | 8-lead MSOP | Package footprint and pin count affect PCB layout and assembly; different lead counts prevent drop-in replacement. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | The supply range must cover the system rail to ensure correct operation and output compliance. |
| Reference Input | External reference | External reference | Reference architecture determines output accuracy and whether an external precision reference is needed. |
| Output Type | Voltage output | Voltage output | Output type must match the load and signal chain; voltage-output DACs are not interchangeable with current-output types. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | The temperature range must cover the application environment to guarantee specified performance. |
| Power-Down Capability | Yes | Yes | Power-down modes reduce current consumption in low-power or battery-operated systems. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5314BRMZ | AD5311BRM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 10 | 10 |
| Number of D/A Converters | 4 | 1 |
| Settling Time | 9µs | 9µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | I²C |
| Reference Type | External | Supply |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| INL / DNL(LSB) | ±0.5, ±0.05 | ±0.5, ±0.05 |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the AD5314BRMZ and the AD5311BRM?
The AD5314BRMZ is a quad 10-bit voltage-output DAC with an SPI-compatible serial interface, while the AD5311BRM is a single 10-bit voltage-output DAC with an I2C-compatible serial interface. The AD5314BRMZ provides four DAC channels in a 10-lead MSOP package, whereas the AD5311BRM provides one DAC channel in an 8-lead MSOP package.
Are the AD5314BRMZ and AD5311BRM pin-compatible?
No. The AD5314BRMZ is supplied in a 10-lead MSOP package, and the AD5311BRM is supplied in an 8-lead MSOP package. They have different pin counts and pin functions, so they are not pin-compatible and cannot be used as drop-in replacements for each other.
What is the resolution and number of DAC channels for each device?
Both devices are 10-bit DACs. The AD5314BRMZ has four independent DAC channels, while the AD5311BRM has one DAC channel.
What serial interface does each device use?
The AD5314BRMZ uses an SPI-compatible serial interface. The AD5311BRM uses an I2C-compatible serial interface. This difference affects the host controller pins, protocol, and daisy-chain capability.
Do the AD5314BRMZ and AD5311BRM have the same output voltage range?
Both devices are voltage-output DACs that can be configured with an external reference to set the output span. The AD5314BRMZ and AD5311BRM both provide a rail-to-rail output amplifier, but the actual output range depends on the applied reference voltage and gain configuration. Consult the respective manufacturer datasheets for the exact output voltage equations and reference input ranges.
Can the AD5314BRMZ and AD5311BRM operate from the same supply voltage?
Both devices are specified for single-supply operation over a similar supply voltage range. However, the exact recommended operating supply range, power-on reset behavior, and timing specifications should be verified in the official manufacturer datasheets for each part before designing a common supply rail.
Which device is more suitable for a design requiring multiple DAC outputs?
The AD5314BRMZ is more suitable for multi-channel designs because it integrates four 10-bit DACs in one package, reducing board space and component count compared with using four separate single-channel DACs such as the AD5311BRM.
Are the AD5314BRMZ and AD5311BRM available in the same package type?
No. The AD5314BRMZ is offered in a 10-lead MSOP package, and the AD5311BRM is offered in an 8-lead MSOP package. The package body size is similar, but the lead count and pinout differ.