Part A
AD5321BRM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 97 Stückzahl
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5321BRMZ and AD5321BRM are functionally equivalent 12-bit DACs from the same manufacturer, sharing identical core specifications. The primary distinction is the package finish, with the BRMZ offering a lead-free, RoHS-compliant construction. This makes the AD5321BRMZ a direct, drop-in replacement for the AD5321BRM in most applications, provided the lead-free requirement is acceptable.
Resolution
High match
Interface Type
High match
Package Type
High match
Lead Finish / RoHS
Validation required
Parts at a glance
Part B
AD5321BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3782 Stückzahl
- Package
- MSOP-8
- 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 | AD5321BRMZ | AD5321BRM | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the smallest output voltage step and overall DAC accuracy; identical resolution means equivalent precision capability. |
| Number of DAC Channels | 1 | 1 | Defines how many independent analog outputs are available; matching channel count ensures the same system architecture can be used. |
| Interface Type | I2C | I2C | The digital communication protocol must match for the host controller to drive the device without firmware changes. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Determines compatibility with the system power rail; identical ranges allow direct substitution without power redesign. |
| Output Voltage Range | 0 V to VDD | 0 V to VDD | Defines the usable analog output span; matching ranges ensure the same signal conditioning circuitry can be reused. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Affects suitability for industrial or automotive environments; identical ratings mean equivalent thermal robustness. |
| Package / Mounting Type | 8-Lead MSOP, Surface Mount | 8-Lead MSOP, Surface Mount | The physical footprint and soldering method must match for PCB layout compatibility; the Z suffix denotes RoHS-compliant packaging. |
| RoHS Compliance | RoHS Compliant | Non-RoHS / Leaded | RoHS status affects regulatory compliance and manufacturing processes; the Z suffix indicates lead-free construction. |
| INL (Integral Nonlinearity) | ±1 LSB max | ±1 LSB max | Specifies worst-case deviation from ideal transfer function; matching INL ensures equivalent accuracy performance. |
| Settling Time | 6 µs | 6 µs | Determines how quickly the output reaches its final value; identical settling time means the same dynamic response in control loops. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5321BRM | AD5321BRMZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Number of Bits | 12 | 12 |
| Number of D / A Converters | 1 | - |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | I2C | I²C |
| Reference Type | Supply | 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) | ±2, ±0.3 | - |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
| Mounting Type | Surface Mount | - |
| Base Product Number | AD5321 | - |
| Number of D/A Converters | - | 1 |
| INL / DNL(LSB) | - | ±2, ±0.3 |
Frequently asked questions
What is the difference between the AD5321BRMZ and the AD5321BRM?
The AD5321BRMZ is the RoHS-compliant, lead-free version of the AD5321BRM. Both are 12-bit, single-channel, voltage-output DACs in an 8-lead MSOP package. The primary difference is the package/ordering option: the "Z" suffix indicates a lead-free, RoHS-compliant molding compound and termination finish, while the AD5321BRM uses the standard (non-Z) package construction.
Are the AD5321BRMZ and AD5321BRM functionally interchangeable?
Yes. Both devices share the same datasheet specifications, including 12-bit resolution, 2.5 V to 5.5 V supply range, I2C-compatible interface, and internal reference options. They are functionally identical; the only difference is the RoHS/lead-free package designation.
Do the AD5321BRMZ and AD5321BRM have the same pinout and package dimensions?
Yes. Both are offered in the same 8-lead MSOP (RM) package with identical pin assignments and mechanical dimensions. The "Z" suffix does not change the package footprint or pin configuration.
What is the resolution and number of DAC channels for the AD5321BRMZ and AD5321BRM?
Both devices are 12-bit, single-channel (1 DAC) voltage-output digital-to-analog converters. They provide 12-bit monotonic performance over the specified temperature range.
What supply voltage range do the AD5321BRMZ and AD5321BRM support?
Both devices operate from a single supply of 2.5 V to 5.5 V. They are specified for operation over the extended industrial temperature range of -40°C to +105°C.
What digital interface do the AD5321BRMZ and AD5321BRM use?
Both use a 2-wire I2C-compatible serial interface that supports standard (100 kHz) and fast (400 kHz) modes. The devices include an asynchronous CLEAR input and a power-on reset circuit.
Does the AD5321BRMZ have the same internal reference as the AD5321BRM?
Yes. Both devices include an on-chip 1.25 V reference that can be used to provide a full-scale output of 2.5 V. They also support the use of an external reference if a different output range is required.
Which part should be selected for new designs, the AD5321BRMZ or the AD5321BRM?
For new designs, the AD5321BRMZ is generally recommended because it is the RoHS-compliant, lead-free version. The AD5321BRM may still be used for existing designs or where non-RoHS assembly processes are required, but availability may be limited as manufacturers transition to lead-free packages.