Part A
AD5660CRMZ-2
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6150 Stückzahl
- Package
- MSOP-8
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5660CRMZ-2 can serve as a functional replacement candidate for the AD5664ARMZ in single-channel 12-bit DAC applications, provided that the reduced channel count, different serial interface protocol, and package footprint differences are validated against the target design requirements.
Resolution
Validation required
Channel Count
Not compatible
Digital Interface
Not compatible
Package Type
Validation required
Parts at a glance
Part B
AD5664ARMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1986 Stückzahl
- Package
- MSOP-10
- 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 | AD5664ARMZ | AD5660CRMZ-2 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Determines how many independent analog outputs are available; a 4-channel device cannot be replaced 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 microcontroller or DSP connectivity. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Both provide unipolar voltage output referenced to VREF, so the output span configuration is comparable. |
| Reference Type | External | Internal 2.5 V | The AD5660CRMZ-2 includes an internal reference, while the AD5664ARMZ requires an external reference, affecting board design and accuracy budget. |
| 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 | 10-Lead MSOP | 8-Lead MSOP | Different package sizes and pin counts prevent direct drop-in replacement without PCB layout changes. |
| INL (Integral Nonlinearity) | ±16 LSB max | ±16 LSB max | Both have comparable linearity specifications, so accuracy performance is similar. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Both support the same industrial temperature range, making them suitable for similar environments. |
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 | AD5660CRMZ-2 | AD5664ARMZ |
|---|---|---|
| Series | nanoDAC® | nanoDAC® |
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 1 | 4 |
| Settling Time | 10µs | 7µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | Internal | External |
| Voltage - Supply, Analog | 5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | ±16 (Max), ±1 (Max) | ±8, ±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 AD5660CRMZ-2?
The AD5664ARMZ is a quad-channel, 16-bit, serial-input, voltage-output DAC with an internal 2.5 V reference and a SPI interface. The AD5660CRMZ-2 is a single-channel, 16-bit, serial-input, voltage-output DAC with an internal 2.5 V reference and a SPI interface, offering a 0 V to 2.5 V output span. The primary difference is channel count: the AD5664ARMZ integrates four DACs in a 10-lead MSOP, while the AD5660CRMZ-2 integrates one DAC in an 8-lead MSOP.
Are the AD5664ARMZ and AD5660CRMZ-2 pin-compatible or package-compatible?
No. The AD5664ARMZ is supplied in a 10-lead MSOP (RMZ suffix) and the AD5660CRMZ-2 is supplied in an 8-lead MSOP (CRMZ suffix). They have different pin counts, pin functions, and PCB land patterns, so they are not drop-in replacements for each other.
Can the AD5664ARMZ and AD5660CRMZ-2 operate from the same supply voltage range?
Yes. Both devices are specified for a single supply voltage range of 2.7 V to 5.5 V, per their respective manufacturer datasheets. This allows both parts to be used in 3 V and 5 V systems, although the output span and channel count differ.
Do both devices include an internal reference, and what is its value?
Yes. Both the AD5664ARMZ and the AD5660CRMZ-2 include an on-chip 2.5 V reference. The AD5660CRMZ-2 provides a full-scale output of 2.5 V (0 V to 2.5 V span) when using the internal reference. The AD5664ARMZ also uses a 2.5 V internal reference, with an output amplifier gain configuration that yields a 0 V to 2.5 V span per channel.
What serial interface do the AD5664ARMZ and AD5660CRMZ-2 use?
Both devices use a 3-wire SPI-compatible serial interface (SYNC, SCLK, and DIN) that operates at clock rates up to 50 MHz for the AD5664ARMZ and up to 30 MHz for the AD5660CRMZ-2, according to their datasheets. The AD5660CRMZ-2 also includes an LDAC pin for simultaneous update of the DAC register, while the AD5664ARMZ provides separate LDAC and CLR control pins.
What are the resolution and INL specifications for each device?
Both the AD5664ARMZ and the AD5660CRMZ-2 are 16-bit DACs. The AD5664ARMZ specifies relative accuracy (INL) of ±16 LSB maximum. The AD5660CRMZ-2 specifies relative accuracy (INL) of ±16 LSB maximum. These values are taken from the respective manufacturer datasheets and apply over the specified operating temperature range.
Which device is better suited for multi-channel applications?
The AD5664ARMZ is better suited for multi-channel applications because it integrates four independent 16-bit DACs in a single 10-lead MSOP package, reducing board space and component count compared with using four separate single-channel DACs such as the AD5660CRMZ-2. The AD5660CRMZ-2 is intended for single-channel designs where only one DAC output is required.
Are the AD5664ARMZ and AD5660CRMZ-2 interchangeable in an existing design?
No. They differ in channel count (4 vs 1), package (10-lead MSOP vs 8-lead MSOP), pinout, and control pin functions. A direct substitution would require a new PCB layout, revised firmware for the different register maps and channel addressing, and validation of the analog output behavior against the target design requirements.