Part A
AD5664ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1986 PCS
- Package
- MSOP-10
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Not a drop-in replacement
The AD5664ARMZ and AD5660CRM-1 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-1 is a single-channel 16-bit DAC in an 8-lead MSOP. They differ in channel count, package footprint, digital interface, and reference architecture, so a direct board-level substitution is not possible without redesign.
Different channel count
Different footprint
Different digital interface
Different reference architecture
Parts at a glance
Part B
AD5660CRM-1
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5151 PCS
- Package
- TSSOP-8
- Series
- Acquisição de dados - Convertedores digitais para analógicos (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-1 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Determines how many independent analog outputs are available; a 4-channel device cannot be substituted by a 1-channel device without redesigning the output stage. |
| Resolution | 16 bits | 16 bits | Both provide 16-bit resolution, so the achievable output precision and step size are equivalent. |
| Interface Type | SPI / DSP | SPI / DSP | Both use a serial SPI-compatible interface, allowing similar digital host connections. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Both provide unipolar voltage output referenced to VREF, so the analog output span is comparable. |
| Reference Type | External | Internal | The AD5660CRM-1 includes an internal reference, while the AD5664ARMZ requires an external reference, affecting board design and accuracy. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Both operate over the same supply range, simplifying power supply compatibility. |
| Package / Mounting | 10-Lead MSOP | 8-Lead MSOP | Different pin counts and footprints prevent direct drop-in replacement without PCB layout changes. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Both support the same industrial temperature range, so environmental compatibility is equivalent. |
| INL (Integral Nonlinearity) | ±16 LSB max | ±16 LSB max | Both have comparable linearity specifications, so accuracy performance is similar. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5664ARMZ | AD5660CRM-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 | Internal |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 3.3V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 3.3V |
| 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 architectural differences between the AD5664ARMZ and the AD5660CRM-1?
The AD5664ARMZ is a quad-channel, 16-bit, serial-input, voltage-output DAC with an internal 2.5 V reference and a SPI-compatible interface. The AD5660CRM-1 is a single-channel, 16-bit, serial-input, voltage-output DAC with an internal 2.5 V reference and a SPI-compatible interface. The primary difference is channel count: the AD5664ARMZ provides four independent DAC channels, while the AD5660CRM-1 provides one.
Are the AD5664ARMZ and AD5660CRM-1 pin-compatible or package-compatible?
No. The AD5664ARMZ is supplied in a 10-lead MSOP (RMZ suffix) package, while the AD5660CRM-1 is supplied in an 8-lead MSOP (CRM suffix) package. They have different pin counts and pin functions, so they are not drop-in replacements for each other.
Do both devices have the same resolution and integral nonlinearity (INL) specifications?
Both are 16-bit DACs. The AD5664ARMZ has a relative accuracy (INL) of ±16 LSB maximum. The AD5660CRM-1 has a relative accuracy (INL) of ±16 LSB maximum. Both specifications are for the 16-bit resolution grade.
Can the AD5664ARMZ and AD5660CRM-1 operate from the same supply voltage range?
Yes. Both devices operate from a single 2.7 V to 5.5 V supply. However, the AD5660CRM-1 is specified for operation from 2.7 V to 5.5 V, and the AD5664ARMZ is also specified for 2.7 V to 5.5 V. Always verify the exact supply range and timing specifications from the respective datasheets for the target operating conditions.
What is the difference in digital interface and throughput between these two DACs?
Both use a SPI-compatible serial interface. The AD5664ARMZ supports clock rates up to 50 MHz and has a 24-bit input shift register. The AD5660CRM-1 supports clock rates up to 30 MHz and has a 24-bit input shift register. The AD5664ARMZ also includes a power-on reset to zero scale or midscale, and a hardware LDAC pin for simultaneous updates.
Which device is better suited for multi-channel control loops?
The AD5664ARMZ is better suited for multi-channel control loops because it integrates four independent 16-bit DAC channels in a single 10-lead MSOP package, reducing board space and component count. The AD5660CRM-1 provides only one channel, so multiple devices would be required for multi-channel applications.
Are the reference and output voltage ranges identical for both parts?
Both devices include an internal 2.5 V reference. The AD5664ARMZ has a full-scale output range of 0 V to VREF (2.5 V) with a gain of 2, giving 0 V to 5 V. The AD5660CRM-1 also has a full-scale output range of 0 V to VREF with a gain of 2, giving 0 V to 5 V. Both allow the use of an external reference if desired.
What are the operating temperature ranges for the AD5664ARMZ and AD5660CRM-1?
Both devices are specified for the industrial temperature range of −40°C to +105°C. The AD5664ARMZ is available in a 10-lead MSOP and the AD5660CRM-1 in an 8-lead MSOP, both rated for this temperature range.