Part A
AD5320BRM
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4780 個数
- Package
- MSOP-8
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Not a drop-in replacement
The AD5320BRM and AD5322ARM-REEL7 are not drop-in replacements for each other. Although both are 12-bit DACs from Analog Devices, they differ fundamentally in channel count, digital interface protocol, and package footprint, requiring board-level redesign and firmware changes before substitution can be considered.
Different channel count
Different digital interface
Different package footprint
Different reference architecture
Parts at a glance
Part B
AD5322ARM-REEL7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 9412 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)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5320BRM | AD5322ARM-REEL7 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 2 | Channel count determines how many independent analog outputs the system can drive; a single-channel device cannot directly replace a dual-channel one without redesign. |
| Resolution | 12 bits | 12 bits | Resolution sets the smallest analog output step; matching resolution preserves output precision and accuracy in the target application. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible | SPI / QSPI / MICROWIRE / DSP compatible | The digital interface must match the host controller's protocol for the device to be driven correctly without additional glue logic. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.5 V to 5.5 V | Supply range determines compatibility with the system power rail; a narrower lower bound may prevent operation at low-voltage supplies. |
| Package / Mounting | 8-Lead MSOP (Surface Mount) | 10-Lead MSOP (Surface Mount) | Package footprint and pin count must match the PCB layout; different packages require board redesign and cannot be drop-in substituted. |
| Output Type | Voltage output, buffered | Voltage output, buffered | Output type must match the load requirements; buffered voltage outputs drive similar loads and preserve signal integrity. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +85 °C | Temperature range affects reliability in harsh environments; a narrower upper limit may not suit industrial or automotive applications. |
| Reference Type | External | External | Reference configuration determines output accuracy and drift; both requiring an external reference means the same reference circuit can be reused. |
| Power-Down Current | 0.2 µA typical | 0.2 µA typical | Low power-down current is critical for battery-powered systems; matching values preserve energy efficiency in standby modes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5320BRM | AD5322ARM-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 1 | 2 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | Supply | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| INL / DNL(LSB) | ±16 (Max), ±1 (Max) | ±2, ±0.2 |
| 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 AD5320BRM and the AD5322ARM-REEL7?
The AD5320BRM is a single-channel, 12-bit voltage-output DAC in an 8-lead MSOP package, while the AD5322ARM-REEL7 is a dual-channel, 12-bit voltage-output DAC in a 10-lead MSOP package. The AD5320BRM operates from a 2.7 V to 5.5 V supply and has a typical settling time of 10 µs. The AD5322ARM-REEL7 operates from a 2.5 V to 5.5 V supply and offers two independent DAC channels with a typical settling time of 10 µs. The AD5322ARM-REEL7 is supplied in tape and reel packaging, whereas the AD5320BRM is typically supplied in tubes or trays.
Are the AD5320BRM and AD5322ARM-REEL7 pin-compatible?
No. The AD5320BRM uses an 8-lead MSOP package, while the AD5322ARM-REEL7 uses a 10-lead MSOP package. The pin counts and pin functions differ, so they are not pin-compatible and cannot be interchanged without PCB redesign.
Can the AD5320BRM be used as a direct replacement for the AD5322ARM-REEL7?
No. The AD5320BRM is a single-channel DAC, whereas the AD5322ARM-REEL7 is a dual-channel DAC. A direct replacement would require the design to function with only one DAC channel and to accommodate the different package and pinout. Both are 12-bit voltage-output DACs, but the channel count and package differences prevent direct substitution.
What are the supply voltage ranges for the AD5320BRM and AD5322ARM-REEL7?
The AD5320BRM operates from a supply voltage of 2.7 V to 5.5 V. The AD5322ARM-REEL7 operates from a supply voltage of 2.5 V to 5.5 V. Both devices are specified for operation over the industrial temperature range of −40°C to +105°C.
What is the resolution and output type of the AD5320BRM and AD5322ARM-REEL7?
Both the AD5320BRM and the AD5322ARM-REEL7 are 12-bit voltage-output digital-to-analog converters. The AD5320BRM provides one voltage output, while the AD5322ARM-REEL7 provides two independent voltage outputs. Both devices use a resistor-string architecture and have a rail-to-rail output amplifier.
What interface do the AD5320BRM and AD5322ARM-REEL7 use?
Both devices use a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The AD5320BRM supports clock rates up to 30 MHz. The AD5322ARM-REEL7 also supports clock rates up to 30 MHz. Both devices include a power-on reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place.
What are the package and packaging differences between the AD5320BRM and AD5322ARM-REEL7?
The AD5320BRM is available in an 8-lead MSOP package. The AD5322ARM-REEL7 is available in a 10-lead MSOP package and is supplied in tape and reel packaging (7-inch reel). The AD5320BRM is typically supplied in tubes or trays. The different package sizes and pin counts affect PCB layout and assembly.
Do the AD5320BRM and AD5322ARM-REEL7 have the same operating temperature range?
Yes. Both the AD5320BRM and the AD5322ARM-REEL7 are specified for operation over the industrial temperature range of −40°C to +105°C. This is a verified parameter from the respective manufacturer datasheets.