Part A
AD5664BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4077 PCS
- Package
- MSOP-10
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Not a drop-in replacement
The AD5664BRMZ and AD5660CRM-3 are not drop-in replacements for each other. The AD5664BRMZ is a quad 16-bit DAC in a 10-lead MSOP, while the AD5660CRM-3 is a single 16-bit DAC in an 8-lead MSOP. They differ in channel count, package footprint, digital interface, and reference architecture, so a direct substitution is not possible without board-level redesign.
Different channel count
Different footprint
Different digital interface
Different reference architecture
Parts at a glance
Part B
AD5660CRM-3
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 489 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 | AD5664BRMZ | AD5660CRM-3 | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Channel count determines how many independent analog outputs the device can drive, directly affecting functional substitutability in multi-channel designs. |
| Resolution | 16 bits | 16 bits | Resolution defines the smallest analog output step; matching resolution is essential for equivalent precision performance. |
| Full-Scale Output Range | 0 V to VREF (external reference) | 0 V to 3 V (internal 3 V reference) | Output span must match the target system's signal requirements; differing reference architecture affects external circuitry and accuracy. |
| Reference Type | External | Internal 3 V | Internal vs external reference changes board design, BOM count, and achievable accuracy without additional components. |
| Interface | SPI (up to 50 MHz) | SPI (up to 30 MHz) | Interface type and speed must be compatible with the host controller; slower maximum clock may limit update rates. |
| Package | 10-Lead MSOP | 8-Lead MSOP | Package footprint and pin count affect PCB layout compatibility and whether a drop-in replacement is possible. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range must encompass the system rail; matching ranges allow use in the same power architecture. |
| INL (Integral Nonlinearity) | ±16 LSB max | ±16 LSB max | INL indicates DC accuracy; equivalent INL ensures comparable linearity performance in precision applications. |
| Power-Down Current | Typically <1 µA | Typically <1 µA | Low power-down current is critical for battery-powered and energy-sensitive designs. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Temperature range must cover the application environment for reliable operation. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5664BRMZ | 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) | ±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-3?
The AD5664BRMZ is a quad-channel, 16-bit, unbuffered voltage-output DAC with a serial interface, while the AD5660CRM-3 is a single-channel, 16-bit, buffered voltage-output DAC with an internal reference and a serial interface. The AD5664BRMZ provides four independent DAC channels in a 10-lead MSOP package, whereas the AD5660CRM-3 provides one channel in an 8-lead MSOP package.
Do the AD5664BRMZ and AD5660CRM-3 have the same resolution and accuracy specifications?
Both devices are 16-bit DACs. However, the AD5664BRMZ has a relative accuracy (INL) of ±16 LSB maximum, while the AD5660CRM-3 has a relative accuracy of ±32 LSB maximum. The AD5660CRM-3 includes an internal 2.5 V reference with ±5 mV initial accuracy and 10 ppm/°C typical temperature drift, whereas the AD5664BRMZ requires an external reference voltage.
Can the AD5664BRMZ and AD5660CRM-3 operate from the same supply voltage?
Yes, both devices operate from a single 2.7 V to 5.5 V supply. The AD5660CRM-3 is specified for operation over the −40°C to +105°C temperature range, and the AD5664BRMZ is specified over the −40°C to +105°C range as well. However, the AD5660CRM-3 includes an on-chip reference that requires the supply to be at least 2.7 V for proper operation.
Are the AD5664BRMZ and AD5660CRM-3 pin-compatible or package-compatible?
No. The AD5664BRMZ is supplied in a 10-lead MSOP package, while the AD5660CRM-3 is supplied in an 8-lead MSOP package. The pinouts differ: the AD5664BRMZ has four analog outputs and a separate reference input pin, whereas the AD5660CRM-3 has one analog output and an internal reference, with different pin functions for the remaining pins. They are not drop-in replacements for each other.
What are the interface and throughput differences between the AD5664BRMZ and AD5660CRM-3?
Both devices use a serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. The AD5664BRMZ supports a clock rate up to 50 MHz and has a settling time of 7 µs typical for a full-scale step. The AD5660CRM-3 supports a clock rate up to 30 MHz and has a settling time of 10 µs typical. The AD5664BRMZ includes a power-on reset to zero scale, while the AD5660CRM-3 powers on to zero scale or midscale depending on the model option.
Which applications are better suited for the AD5664BRMZ versus the AD5660CRM-3?
The AD5664BRMZ is suited for multi-channel applications requiring four independent 16-bit DAC outputs with an external reference, such as process control, data acquisition, and portable instrumentation. The AD5660CRM-3 is suited for single-channel applications where an integrated reference simplifies the design, such as digital gain and offset adjustment, programmable voltage and current sources, and optical module control.
Do the AD5664BRMZ and AD5660CRM-3 have the same power consumption characteristics?
No. The AD5664BRMZ typically consumes 1.5 mA at 5 V (excluding reference and output load), while the AD5660CRM-3 typically consumes 0.6 mA at 5 V. Both devices feature a power-down mode: the AD5664BRMZ reduces current to 1 µA typical, and the AD5660CRM-3 reduces current to 0.5 µA typical. The AD5660CRM-3 includes an internal reference that adds to the total supply current when enabled.
Are the AD5664BRMZ and AD5660CRM-3 interchangeable in an existing design?
No, they are not interchangeable without significant redesign. The AD5664BRMZ has four DAC channels, requires an external reference, and uses a 10-lead MSOP package. The AD5660CRM-3 has one DAC channel, includes an internal reference, and uses an 8-lead MSOP package. Pin functions, package footprint, channel count, and reference architecture differ, so a direct substitution is not possible.