Part A
AD5664ARMZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 1986 PCS
- Package
- MSOP-10
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Not a drop-in replacement
The AD5664ARMZ and AD5660CRM-3 are not drop-in replacements for each other. The AD5664ARMZ is a quad-channel 16-bit DAC in a 10-lead MSOP, while the AD5660CRM-3 is a single-channel 16-bit DAC in an 8-lead MSOP with an internal 1.25 V reference and a 0 V to 2.5 V output span. They differ in channel count, package and pinout, reference architecture, and output voltage range, so a direct substitution is not possible without a board redesign and external reference circuitry.
Different channel count
Different package and pinout
Different reference architecture
Different output voltage range
Parts at a glance
Part B
AD5660CRM-3
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 489 PCS
- Package
- TSSOP-8
- Series
- Acquisition de données - convertisseur numérique - analogique (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 | AD5664ARMZ | AD5660CRM-3 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Determines how many independent analog outputs are available; a 4-channel device cannot be directly substituted where a single-channel output is required, and vice versa. |
| Resolution | 16 bits | 16 bits | Resolution sets the smallest analog step size; matching resolution is essential for equivalent output precision. |
| Full-Scale Output Range | 0 V to VREF (external reference) | 0 V to 3 V (internal 1.25 V reference, gain = 2) | The output span must match the target system's signal range; the AD5660CRM-3 has a fixed 3 V span while the AD5664ARMZ depends on an external reference. |
| Reference Type | External | Internal | Internal vs external reference affects board design, accuracy, and the need for additional reference circuitry. |
| Interface | SPI | SPI | The digital interface must be compatible with the host controller for the device to be usable in the same socket. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range must overlap with the available system rail for the part to operate correctly. |
| Package | 10-Lead MSOP | 8-Lead MSOP | Different pin counts and footprints prevent direct drop-in replacement on an existing PCB. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | The temperature range must cover the application's environmental conditions for reliable operation. |
| INL (Integral Nonlinearity) | ±16 LSB max | ±16 LSB max | INL defines DC accuracy; matching it ensures comparable linearity performance in precision applications. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5664ARMZ | AD5660CRM-3 |
|---|---|---|
| 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 | Internal |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 5V |
| INL / DNL(LSB) | ±8, ±1 (Max) | ±16 (Max), ±1 (Max) |
| 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 AD5664ARMZ and the AD5660CRM-3?
The AD5664ARMZ is a quad-channel, 16-bit, serial-input voltage-output DAC in a 10-lead MSOP package, while the AD5660CRM-3 is a single-channel, 16-bit, serial-input voltage-output DAC in an 8-lead MSOP package. The AD5660CRM-3 includes an internal 2.5 V reference and provides a 0 V to 3 V output span, whereas the AD5664ARMZ requires an external reference and offers a 0 V to VREF output span.
Can the AD5664ARMZ and AD5660CRM-3 be used interchangeably in a design?
No. They differ in channel count, package pinout, reference architecture, and output voltage range. The AD5664ARMZ has four DAC channels and no internal reference, while the AD5660CRM-3 has one DAC channel, an internal 2.5 V reference, and a fixed 3 V output span. A direct substitution would require significant redesign and is not pin-compatible.
What is the resolution and channel count of each device?
Both devices are 16-bit DACs. The AD5664ARMZ provides four independent DAC channels, while the AD5660CRM-3 provides a single DAC channel.
Do these DACs include an internal voltage reference?
The AD5660CRM-3 includes an internal 2.5 V reference, giving a full-scale output of 3 V. The AD5664ARMZ does not include an internal reference and requires an external reference voltage to set its output span.
What are the package and pin count differences?
The AD5664ARMZ is supplied in a 10-lead MSOP package. The AD5660CRM-3 is supplied in an 8-lead MSOP package. The pinouts are not compatible, so PCB layout changes are required when switching between them.
What serial interface do the AD5664ARMZ and AD5660CRM-3 use?
Both devices use a serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The AD5664ARMZ supports a 24-bit input shift register for four channels, while the AD5660CRM-3 uses a 24-bit input shift register for its single channel.
What are the output voltage ranges of the AD5664ARMZ and AD5660CRM-3?
The AD5664ARMZ output range is 0 V to VREF, where VREF is supplied externally. The AD5660CRM-3 output range is 0 V to 3 V, derived from its internal 2.5 V reference with a gain of 1.2.
Are the AD5664ARMZ and AD5660CRM-3 available in evaluation boards or reference designs?
Yes. Analog Devices provides evaluation boards for both the AD5664R (which includes the AD5664ARMZ) and the AD5660 families. These boards allow quick prototyping and performance verification, but they are specific to each device and are not interchangeable.