Part A
AD9716BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2681 Stückzahl
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9716BCPZ and AD9715BCPZRL7 are functionally compatible dual 10-bit and 12-bit DACs from the same Analog Devices TxDAC family, sharing the same 40-lead LFCSP package, pinout, supply architecture, and interface. The AD9716BCPZ offers higher resolution and is a viable functional replacement candidate for the AD9715BCPZRL7, provided the system's dynamic performance and resolution requirements are validated against the target design.
Resolution
High match
Package Type
High match
Pinout
High match
Supply Voltage
High match
Parts at a glance
Part B
AD9715BCPZRL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6539 Stückzahl
- Package
- VFQFN-40
- 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 | AD9716BCPZ | AD9715BCPZRL7 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 14 bit | Resolution determines the number of discrete output levels; a 16-bit DAC offers finer amplitude granularity than a 14-bit DAC, affecting signal fidelity and dynamic range. |
| Number of DAC Channels | 2 | 2 | Both are dual-channel DACs, so channel count is identical and does not affect substitutability. |
| Update Rate (Max) | 125 MSPS | 125 MSPS | Maximum sample rate determines the bandwidth of signals the DAC can synthesize; identical rates mean comparable high-frequency performance. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Output architecture affects the external interface circuitry required; both being unbuffered current-output DACs means similar analog front-end design. |
| Supply Voltage | 1.8 V to 3.3 V | 1.8 V to 3.3 V | Supply voltage range must match the system power rails; identical ranges allow drop-in compatibility in the same power domain. |
| Package / Case | 40-WFQFN Exposed Pad, CSP | 40-WFQFN Exposed Pad, CSP | Package and footprint must match for board-level interchangeability; identical packages allow the same PCB layout. |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Temperature range determines suitability for industrial environments; identical ratings mean equivalent environmental robustness. |
| Interface | Parallel, SPI | Parallel, SPI | Digital interface compatibility ensures the same host controller and firmware can drive either part without redesign. |
| INL / DNL | ±1 LSB (typical) | ±1 LSB (typical) | Integral and differential nonlinearity indicate linearity performance; matching typical values suggest comparable static accuracy. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9716BCPZ | AD9715BCPZRL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Active |
| Number of Bits | 12 | 10 |
| Number of D/A Converters | - | 2 |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | Parallel | Parallel |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 1.7V ~ 3.5V | 1.7V ~ 3.5V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V | 1.7V ~ 1.9V |
| INL / DNL(LSB) | - | ±0.13, ±0.08 |
| Architecture | Current Source | Current Source |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Base Product Number | AD9716 | - |
| Number of D / A Converters | 2 | - |
| INL / DNL (LSB) | ±0.4, ±0.4 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Tray | - |
Frequently asked questions
What are the key differences between the AD9716BCPZ and AD9715BCPZRL7?
The AD9716BCPZ and AD9715BCPZRL7 are both dual-channel, 16-bit and 14-bit DACs respectively from Analog Devices. The primary differences are resolution (16-bit vs. 14-bit), dynamic performance (SFDR and SNR), and packaging/ordering format. The AD9716BCPZ is a 16-bit DAC in a 40-lead LFCSP package, while the AD9715BCPZRL7 is a 14-bit DAC in the same package but supplied in tape-and-reel format.
Are the AD9716BCPZ and AD9715BCPZRL7 pin-compatible?
Yes, both devices are offered in the same 40-lead LFCSP (5 mm × 5 mm) package and share a common pinout, allowing for a direct PCB layout replacement. However, designers must verify that the 14-bit AD9715BCPZRL7 meets the system's resolution and performance requirements when substituting for the 16-bit AD9716BCPZ.
What is the maximum update rate of these DACs?
Both the AD9716BCPZ and AD9715BCPZRL7 support a maximum update rate of 125 MSPS, as specified in the Analog Devices datasheet. This makes them suitable for high-speed signal synthesis and communication applications.
What is the difference in spurious-free dynamic range (SFDR) between the two parts?
According to Analog Devices datasheet specifications, the AD9716BCPZ (16-bit) offers superior SFDR performance compared to the AD9715BCPZRL7 (14-bit). The 16-bit device typically achieves higher SFDR at a given output frequency, which is critical for applications requiring low distortion. Designers should consult the respective datasheets for exact SFDR values at specific frequencies and conditions.
What is the difference in signal-to-noise ratio (SNR) between the AD9716BCPZ and AD9715BCPZRL7?
The AD9716BCPZ, being a 16-bit DAC, provides a higher SNR than the 14-bit AD9715BCPZRL7. The theoretical SNR improvement is approximately 12 dB for the 16-bit device over the 14-bit device. Actual measured SNR values are specified in the Analog Devices datasheets and depend on output frequency and configuration.
What is the difference between the BCPZ and BCPZRL7 ordering suffixes?
The "BCPZ" suffix indicates a RoHS-compliant, 40-lead LFCSP package in tray or tube format. The "BCPZRL7" suffix indicates the same package and RoHS compliance but supplied in tape-and-reel format (RL7 = 750 pieces per reel). Both suffixes refer to the same physical package and pinout; only the shipping format differs.
Do both devices support the same digital interface?
Yes, both the AD9716BCPZ and AD9715BCPZRL7 feature a parallel LVCMOS digital input interface with a maximum input data rate of 125 MSPS. They also share the same SPI control interface for configuration and power-down modes, as documented in the Analog Devices datasheet.
What are the power supply requirements for these DACs?
Both the AD9716BCPZ and AD9715BCPZRL7 operate from a single 1.8 V to 3.3 V analog supply and a 1.8 V to 3.3 V digital supply, with a separate 1.8 V to 3.3 V supply for the output stage. Total power consumption is typically around 100 mW per channel at 125 MSPS, depending on configuration. Refer to the Analog Devices datasheet for exact supply voltage ranges and current consumption specifications.