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-2 are not drop-in replacements for each other. Although both are 16-bit nanoDAC single-supply DACs from Analog Devices, they differ fundamentally in channel count, digital interface, reference architecture, and package footprint, requiring hardware and firmware redesign if substitution is considered.
Different channel count
Different digital interface
Different reference type
Different package footprint
Parts at a glance
Part B
AD5660CRM-2
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5437 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-2 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Channel count determines how many independent analog outputs the device can drive, directly affecting board layout and system architecture. |
| Resolution | 16 bits | 16 bits | Resolution sets the smallest analog output step, which governs achievable precision in the target application. |
| Interface Type | SPI | SPI | The digital interface must match the host controller to allow communication without additional glue logic. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | The output span must cover the signal range required by the downstream circuit for correct operation. |
| Reference Type | External | Internal | Internal versus external reference affects accuracy, drift, and the need for additional external components. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range must be compatible with the available power rails in the system. |
| Package | 10-Lead MSOP | 8-Lead MSOP | Package footprint and pin count affect PCB layout and may prevent drop-in replacement. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Temperature range must meet the environmental conditions of the end application. |
| Settling Time | 7 µs | 10 µs | Settling time limits the maximum update rate and affects dynamic performance in control loops. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5664ARMZ | AD5660CRM-2 |
|---|---|---|
| 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 architectural differences between the AD5664ARMZ and the AD5660CRM-2?
The AD5664ARMZ is a quad-channel, 16-bit, serial-input, voltage-output DAC in a 10-lead MSOP package, while the AD5660CRM-2 is a single-channel, 16-bit, serial-input, voltage-output DAC in an 8-lead MSOP package. The AD5664ARMZ integrates four independent DAC channels, whereas the AD5660CRM-2 provides one channel with an on-chip 2.5 V reference and a selectable output range of 0 V to 2.5 V or 0 V to 5 V.
Are the AD5664ARMZ and AD5660CRM-2 pin-compatible or package-compatible?
No. The AD5664ARMZ uses a 10-lead MSOP package, and the AD5660CRM-2 uses an 8-lead MSOP package. They have different pin counts and pin functions, so they are not pin-compatible or directly interchangeable on the same PCB footprint.
How do the reference voltage and output range specifications compare between these two DACs?
The AD5664ARMZ requires an external reference voltage applied to its VREF pin and provides a full-scale output of VREF. The AD5660CRM-2 includes an internal 2.5 V reference and offers a fixed gain of 2, giving a 0 V to 5 V output range, or a gain of 1 for a 0 V to 2.5 V output range, selectable via the GAIN pin.
What are the supply voltage and power consumption characteristics of the AD5664ARMZ and AD5660CRM-2?
Both devices operate from a single 2.7 V to 5.5 V supply. The AD5664ARMZ typically consumes 1.2 mA at 5 V, while the AD5660CRM-2 typically consumes 0.7 mA at 5 V. Both offer power-down modes that reduce current consumption to typically less than 1 µA.
What serial interface and resolution do the AD5664ARMZ and AD5660CRM-2 support?
Both DACs are 16-bit resolution devices with a serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. The AD5664ARMZ supports a 24-bit input shift register for quad-channel addressing, while the AD5660CRM-2 uses a 24-bit input shift register for single-channel control.
Can the AD5664ARMZ and AD5660CRM-2 be used in the same application for multi-channel and single-channel requirements?
Yes, they can be used together in a system where multiple channels are needed. The AD5664ARMZ provides four DAC channels in one package, and the AD5660CRM-2 provides one channel with an integrated reference. However, the system design must account for separate PCB footprints, different external reference requirements for the AD5664ARMZ, and independent SPI chip-select signals.
What are the operating temperature ranges and package thermal characteristics of these two DACs?
Both the AD5664ARMZ and AD5660CRM-2 are specified for the industrial temperature range of −40°C to +105°C. The AD5664ARMZ is housed in a 10-lead MSOP, and the AD5660CRM-2 is housed in an 8-lead MSOP. Both packages are lead-frame based and comply with RoHS requirements.