Part A
AD7302BRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6529 Stückzahl
- Package
- SOIC-20
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Not a drop-in replacement
The AD7302BRZ and AD7304YR are not drop-in replacements for one another. Although both are dual/quad 8-bit voltage-output DACs from the same family, they differ in channel count, package footprint, and reference architecture, so a direct board-level substitution is not possible without redesign.
Different channel count
Different package footprint
Different reference architecture
Different interface configuration
Parts at a glance
Part B
AD7304YR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4110 Stückzahl
- Package
- SOIC-16
- 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 | AD7302BRZ | AD7304YR | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 | 4 | Channel count determines how many independent analog outputs are available; a 4-channel part cannot directly replace a 2-channel part in a fixed layout. |
| Resolution | 8 bits | 8 bits | Resolution sets the number of discrete output levels; matching resolution is required for equivalent output granularity. |
| Interface Type | Parallel | Serial (SPI-compatible) | The digital interface must match the host controller; parallel and serial parts are not pin- or protocol-compatible. |
| Package / Mounting | 20-lead SOIC (surface mount) | 16-lead SOIC (surface mount) | Different package footprints and pin counts prevent drop-in substitution on the same PCB. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Operating supply range must cover the system rail; matching ranges allow use in the same power domain. |
| Output Type | Voltage output | Voltage output | Voltage-output DACs drive loads directly; matching output type ensures the same signal conditioning approach applies. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range must cover the application environment for reliable operation. |
| Reference Input | External reference | External reference | Both require an external reference, so the same reference source and scaling can be reused. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7302BRZ | AD7304YR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 8 | - |
| Number of D/A Converters | 2 | - |
| Settling Time | 2µs | - |
| Output Type | Voltage - Buffered | - |
| Differential Output | No | - |
| Data Interface | Parallel | - |
| Reference Type | External | - |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | - |
| INL / DNL(LSB) | ±1 (Max), ±1 (Max) | - |
| Architecture | Current Source | - |
| Operating Temperature | -40°C ~ 105°C | - |
Frequently asked questions
What are the key differences between the AD7302BRZ and AD7304YR?
The AD7302BRZ is a dual 8-bit voltage-output DAC in a 20-lead SOIC package, while the AD7304YR is a quad 8-bit voltage-output DAC in a 16-lead SOIC package. The AD7302 provides two DAC channels, and the AD7304 provides four, so the primary difference is channel count and package pin count.
Do the AD7302BRZ and AD7304YR have the same resolution and interface?
Yes. Both are 8-bit voltage-output DACs with a parallel microprocessor-compatible interface, and both operate from a single +2.7 V to +5.5 V supply according to Analog Devices datasheets.
Can the AD7302BRZ be used as a drop-in replacement for the AD7304YR?
No. The AD7302BRZ has two DAC channels in a 20-lead SOIC package, while the AD7304YR has four DAC channels in a 16-lead SOIC package. The channel count, pinout, and package differ, so they are not pin-compatible or directly interchangeable.
What is the difference in package and pin count between the two devices?
The AD7302BRZ is supplied in a 20-lead SOIC package, and the AD7304YR is supplied in a 16-lead SOIC package. The different pin counts reflect the different number of DAC channels and associated control pins.
Are both parts specified over the same temperature range?
Both the AD7302BRZ and AD7304YR are specified for the industrial temperature range of -40°C to +105°C per Analog Devices datasheets.
Do both DACs support the same reference input configuration?
Yes. Both the AD7302 and AD7304 provide a reference input pin that sets the output voltage span, and both support external reference operation over the specified supply range.
Which part should be selected for an application requiring four independent DAC channels?
The AD7304YR should be selected because it integrates four 8-bit DAC channels in a single 16-lead SOIC package, whereas the AD7302BRZ provides only two channels.