Part A
AD5684RBRUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4245 個数
- Package
- SOP-16
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5684RBRUZ and AD5685RBRUZ-RL7 are functionally compatible candidates for substitution in many designs, sharing the same package, resolution, and interface architecture. However, the AD5685RBRUZ-RL7 offers a higher reference voltage and wider output span, which may require validation of the analog supply and output stage in the target application. Review the critical differences before committing to a drop-in replacement.
Resolution
High match
Package Type
High match
Interface Type
High match
Reference Voltage
Validation required
Parts at a glance
Part B
AD5685RBRUZ-RL7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7246 個数
- Package
- TSSOP-16
- Series
- データ取得 - デジタル/アナログコンバータ (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 | AD5684RBRUZ | AD5685RBRUZ-RL7 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 14 bit | Higher resolution provides finer output voltage steps, directly affecting achievable setpoint accuracy and granularity in the target application. |
| Number of DAC Channels | 4 | 4 | Channel count determines how many independent analog outputs can be controlled from a single device. |
| INL (Integral Nonlinearity) | ±1 LSB max | ±4 LSB max | INL defines worst-case deviation from an ideal transfer function and bounds overall DC accuracy of the DAC output. |
| DNL (Differential Nonlinearity) | ±1 LSB max | ±1 LSB max | DNL guarantees monotonicity and step-size uniformity, which is critical for closed-loop control and calibration routines. |
| Reference Type | Internal 2.5 V, 2 ppm/°C | Internal 2.5 V, 2 ppm/°C | An integrated low-drift reference removes the need for an external reference and improves long-term output stability over temperature. |
| Output Voltage Range | 0 V to VREF (2.5 V or 5 V gain options) | 0 V to VREF (2.5 V or 5 V gain options) | The selectable output span determines compatibility with the downstream circuit's input range and supply headroom. |
| Interface | SPI, up to 50 MHz | SPI, up to 50 MHz | A fast serial interface enables high update rates and reduces the number of host controller pins required. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range must match the system rail to ensure proper operation and output compliance. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Package and pinout compatibility determine whether the parts are drop-in replacements on an existing PCB layout. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | The temperature range must cover the application's environmental conditions for guaranteed performance and reliability. |
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 | AD5684RBRUZ | AD5685RBRUZ-RL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | nanoDAC+® | nanoDAC+® |
| Part Status | Active | Active |
| Number of Bits | 12 | 14 |
| Number of D/A Converters | 4 | 4 |
| Settling Time | 7µs | 8µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| INL / DNL(LSB) | ±0.12, ±1 (Max) | ±0.5, ±1 (Max) |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the AD5684RBRUZ and AD5685RBRUZ-RL7?
The AD5684RBRUZ is a quad-channel, 12-bit nanoDAC+ with an internal 2.5 V reference, while the AD5685RBRUZ-RL7 is a quad-channel, 14-bit nanoDAC+ with an internal 2.5 V reference. Both are offered in a 16-lead TSSOP package and share the same pinout and SPI interface, but they differ in resolution and ordering format.
Are the AD5684RBRUZ and AD5685RBRUZ-RL7 pin-compatible?
Yes. Both devices are specified in the same 16-lead TSSOP (RU-16) package and share an identical pinout, as documented in the respective Analog Devices datasheets. This allows a common PCB footprint, but resolution-dependent firmware scaling must be considered.
What is the resolution of each device?
The AD5684RBRUZ provides 12-bit resolution (4096 codes), while the AD5685RBRUZ-RL7 provides 14-bit resolution (16384 codes). Both are members of the AD5684R/AD5685R family of quad nanoDAC+ converters.
Do both parts include an internal reference?
Yes. Both the AD5684RBRUZ and AD5685RBRUZ-RL7 integrate an internal 2.5 V reference with a typical temperature drift of 2 ppm/°C, and both also support operation with an external reference.
What digital interface do these DACs use?
Both devices use a 3-wire or 4-wire SPI-compatible serial interface supporting clock rates up to 50 MHz, with separate SDO for daisy-chain and readback operation, as specified in the Analog Devices datasheets.
What is the difference between the "BRUZ" and "BRUZ-RL7" suffixes?
The "BRUZ" suffix indicates a 16-lead TSSOP package in tube format, while "BRUZ-RL7" indicates the same 16-lead TSSOP package supplied in 7-inch tape-and-reel packaging. The electrical performance of the die is not changed by the packaging option.
Can the AD5684RBRUZ be replaced by the AD5685RBRUZ-RL7 in an existing design?
Because both share the same package, pinout, reference, and SPI interface, a hardware drop-in is generally possible. However, the 14-bit AD5685RBRUZ-RL7 offers four times the code resolution of the 12-bit AD5684RBRUZ, so system firmware and output scaling must be updated and validated against the target design requirements.
What are the supply voltage and operating temperature ranges for these devices?
Both the AD5684RBRUZ and AD5685RBRUZ-RL7 operate from a single 2.7 V to 5.5 V supply and are specified over the −40 °C to +105 °C industrial temperature range, per the Analog Devices datasheets.