Part A
AD5664BRMZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4077 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
Not a drop-in replacement
The AD5664BRMZ and AD5662BRM-1 are not drop-in replacements for each other. The AD5664BRMZ is a quad-channel 16-bit DAC with an SPI interface, while the AD5662BRM-1 is a single-channel 16-bit DAC with an I²C-compatible interface. They differ in channel count, digital interface, package pinout, and reference architecture, so a direct substitution is not possible without a board redesign.
Different channel count
Different digital interface
Different pinout
Different reference architecture
Parts at a glance
Part B
AD5662BRM-1
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7847 個数
- Package
- TSSOP-8
- 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 | AD5664BRMZ | AD5662BRM-1 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Channel count determines how many independent analog outputs are available, directly affecting whether the parts can substitute in multi-channel designs. |
| Resolution | 16 bits | 16 bits | Resolution sets the smallest output step and overall precision; matching resolution is essential for equivalent analog performance. |
| Interface Type | SPI / DSP / Microwire compatible | SPI / DSP / Microwire compatible | The digital interface must match the host controller to allow direct communication without additional glue logic. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range determines compatibility with the system power rail and affects output swing and logic thresholds. |
| Output Type | Voltage output, buffered | Voltage output, buffered | Output type must match the load requirements; buffered voltage outputs drive external circuitry directly. |
| Package | 10-lead MSOP | 8-lead MSOP | Package footprint and pin count affect PCB layout and whether a drop-in replacement is possible. |
| Reference Type | External reference | External reference | Reference configuration influences output accuracy and stability, and must align with the system reference design. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range ensures the device meets the environmental requirements of the target application. |
| INL (Integral Nonlinearity) | ±16 LSB max | ±16 LSB max | INL defines static accuracy; matching values indicate comparable linearity performance for precision applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5664BRMZ | AD5662BRM-1 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | nanoDAC® | nanoDAC® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 4 | 1 |
| Settling Time | 7µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | ±6, ±1 (Max) | ±8, ±1 (Max) |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the AD5664BRMZ and the AD5662BRM-1?
The AD5664BRMZ is a quad-channel, 16-bit nanoDAC with a SPI interface, while the AD5662BRM-1 is a single-channel, 16-bit nanoDAC with a SPI interface. The AD5664BRMZ offers four independent DAC outputs in a 10-lead MSOP package, whereas the AD5662BRM-1 provides one DAC output in an 8-lead MSOP package. Both operate from a 2.7 V to 5.5 V supply and feature a power-on reset to zero scale or midscale, depending on the model option.
Are the AD5664BRMZ and AD5662BRM-1 pin-compatible?
No. The AD5664BRMZ is housed in a 10-lead MSOP package, while the AD5662BRM-1 uses an 8-lead MSOP package. The pin counts and pin functions differ, so they are not pin-compatible and cannot be used as drop-in replacements without PCB redesign.
Can the AD5664BRMZ and AD5662BRM-1 operate from the same supply voltage?
Yes. Both devices are specified for operation from a single 2.7 V to 5.5 V supply, making them suitable for low-power, single-supply applications. However, the AD5664BRMZ integrates four DAC channels, which may increase total supply current compared to the single-channel AD5662BRM-1.
What is the resolution and interface of the AD5664BRMZ and AD5662BRM-1?
Both the AD5664BRMZ and AD5662BRM-1 are 16-bit DACs with a serial SPI interface. The AD5664BRMZ supports clock rates up to 50 MHz, while the AD5662BRM-1 supports clock rates up to 30 MHz. Both include a power-on reset circuit and a power-down mode.
Do the AD5664BRMZ and AD5662BRM-1 have the same reference input configuration?
No. The AD5664BRMZ provides an external reference input pin and also includes an on-chip reference option (depending on the model suffix). The AD5662BRM-1 requires an external reference voltage applied to its VREF pin. Designers must verify the specific model ordering code to confirm whether an internal reference is present.
Which applications are better suited for the AD5664BRMZ versus the AD5662BRM-1?
The AD5664BRMZ is suited for multi-channel applications requiring four independent 16-bit DAC outputs, such as industrial control loops, portable instrumentation, and digital gain/offset adjustment. The AD5662BRM-1 is better for space-constrained, single-channel applications where only one DAC output is needed, such as trim potentiometers, sensor calibration, or single-setpoint control.
Are the AD5664BRMZ and AD5662BRM-1 RoHS compliant?
Yes. Both the AD5664BRMZ and AD5662BRM-1 are available in RoHS-compliant packages, as indicated by the "Z" suffix in the AD5664BRMZ part number and the standard package designation for the AD5662BRM-1. Designers should confirm the specific ordering code on the manufacturer datasheet to ensure compliance for their application.
What is the power-on reset state of the AD5664BRMZ and AD5662BRM-1?
Both devices feature a power-on reset circuit that ensures the DAC output powers up to zero scale or midscale, depending on the model option. The AD5664BRMZ and AD5662BRM-1 offer both zero-scale and midscale reset options, which are selected by the specific ordering part number. This prevents unwanted actuator movement during system startup.