Part A
AD5664BRMZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4077 PCS
- Package
- MSOP-10
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Not a drop-in replacement
The AD5664BRMZ and AD5660CRM-2 are not drop-in replacements for each other. The AD5664BRMZ is a quad 16-bit DAC in a 10-lead MSOP, while the AD5660CRM-2 is a single 16-bit DAC in an 8-lead MSOP. They differ in channel count, package footprint, pinout, and reference architecture, so a direct board-level substitution is not possible without redesign.
Different channel count
Different footprint
Different pinout
Different reference architecture
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 | AD5664BRMZ | AD5660CRM-2 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Determines how many independent analog outputs are available; a quad-channel device cannot be replaced by a single-channel device without redesigning the output stage. |
| Resolution | 16 bits | 16 bits | Both provide 16-bit resolution, so the achievable output granularity and quantization error are equivalent. |
| Interface Type | SPI | SPI | Both use a serial SPI-compatible interface, allowing similar digital host connections and firmware protocol handling. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | The output span is set by the external reference, so both can be scaled similarly if the same reference is used. |
| Reference Type | External | Internal | An internal reference simplifies the design and reduces external components, while an external reference allows greater flexibility and system-level reference sharing. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Both operate over the same supply range, so power-supply compatibility is maintained. |
| Package Type | 10-Lead MSOP | 8-Lead MSOP | Different pin counts and footprints affect PCB layout, routing, and mechanical compatibility. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Both support industrial temperature ranges, making them suitable for similar environmental conditions. |
| Power-On Reset | Yes | Yes | Power-on reset ensures the DAC outputs a known state at startup, which is important for safe and deterministic system behavior. |
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 | AD5664BRMZ | 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) | ±6, ±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 AD5664BRMZ and the AD5660CRM-2?
The AD5664BRMZ is a quad-channel, 16-bit, unbuffered voltage-output DAC with a serial interface, housed in a 10-lead MSOP. The AD5660CRM-2 is a single-channel, 16-bit, buffered voltage-output DAC with an internal 2.5 V reference, housed in an 8-lead MSOP. The AD5664BRMZ requires an external reference, while the AD5660CRM-2 integrates a 2.5 V, 5 ppm/°C reference.
Can the AD5664BRMZ and AD5660CRM-2 be used interchangeably in an existing design?
No. They differ in channel count (4 vs. 1), package pinout (10-lead MSOP vs. 8-lead MSOP), reference architecture (external vs. internal), and output buffer configuration. A direct drop-in replacement is not possible without redesigning the PCB and validating the reference and output drive requirements.
What is the resolution and integral nonlinearity (INL) of each device?
Both devices offer 16-bit resolution. The AD5664BRMZ specifies a maximum INL of ±16 LSB. The AD5660CRM-2 specifies a maximum INL of ±16 LSB for the -2 grade. These values are verified from the respective manufacturer datasheets.
How do the output voltage ranges compare between the AD5664BRMZ and AD5660CRM-2?
The AD5664BRMZ provides an unbuffered voltage output that spans from 0 V to the external reference voltage (VREF). The AD5660CRM-2 provides a buffered output with a fixed gain of 2, producing an output range of 0 V to 5 V when using its internal 2.5 V reference. The AD5660CRM-2 output is capable of driving heavier loads due to its integrated output buffer.
What are the supply voltage and power consumption specifications for these DACs?
The AD5664BRMZ operates from a single 2.7 V to 5.5 V supply and typically consumes 1.2 mW at 3 V (including reference input current). The AD5660CRM-2 operates from a single 4.5 V to 5.5 V supply and typically consumes 2.5 mW at 5 V. These figures are based on datasheet typical values at 25°C.
Which device is better suited for multi-channel control applications?
The AD5664BRMZ is better suited for multi-channel control because it integrates four independent 16-bit DAC channels in a single 10-lead MSOP package, reducing board space and component count. The AD5660CRM-2 provides only one channel per package, so multi-channel systems would require multiple devices.
Do both devices support the same serial interface protocol?
Yes, both devices use a standard SPI-compatible serial interface. The AD5664BRMZ supports clock rates up to 50 MHz, while the AD5660CRM-2 supports clock rates up to 30 MHz. Both are compatible with SPI, QSPI, MICROWIRE, and DSP interface standards.
What are the operating temperature ranges for the AD5664BRMZ and AD5660CRM-2?
Both devices are specified for operation over the industrial temperature range of −40°C to +105°C. This is verified from the manufacturer datasheets for both the AD5664BRMZ and AD5660CRM-2.