Part A
AD9716BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2681 PCS
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9716BCPZ and AD9717BCPZ are pin-compatible dual 16-bit current-output DACs from the same Analog Devices TxDAC family, sharing the LFCSP-40 package, supply architecture, and digital interface. The AD9717BCPZ offers a higher maximum update rate and wider signal bandwidth, making it a viable functional upgrade for the AD9716BCPZ in most applications, provided the system timing margin and power budget are validated against the higher-speed device.
Resolution and Channel Count
High match
Package and Pinout
High match
Maximum Update Rate
Validation required
Power Consumption
Validation required
Parts at a glance
Part B
AD9717BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3375 PCS
- Package
- VFQFN-40
- 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 | AD9716BCPZ | AD9717BCPZ | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Both are 14-bit DACs, so quantization noise and dynamic range are equivalent; resolution is not a differentiator. |
| Number of DAC Channels | 2 | 2 | Dual-channel architecture supports I/Q signal generation; identical channel count means the same system topology can be used. |
| Maximum Update Rate | 125 MSPS | 125 MSPS | Sample rate determines the maximum synthesizable signal bandwidth; matching rates allow drop-in replacement in the same clocking scheme. |
| Output Type | Current (differential) | Current (differential) | Current-output DACs require an external I/V stage; identical output topology means the analog front-end can remain unchanged. |
| Supply Voltage | 1.8 V to 3.3 V | 1.8 V to 3.3 V | Compatible supply rails allow the same power design and decoupling network to be reused. |
| Interface | Parallel CMOS | Parallel CMOS | The digital input interface must match the driving FPGA/ASIC; identical parallel CMOS interfaces ensure pin-compatible digital connection. |
| Package | 40-Lead LFCSP | 40-Lead LFCSP | Package and pinout determine board footprint and layout compatibility; identical LFCSP packages support drop-in substitution. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range suitability is identical, so environmental qualification carries over between the two parts. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9716BCPZ | AD9717BCPZ |
|---|---|---|
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Active |
| Number of Bits | 12 | 14 |
| 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) | - | ±1.8, ±1.7 |
| 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 AD9717BCPZ?
Both are dual-channel, 16-bit digital-to-analog converters from Analog Devices in a 40-lead LFCSP package. The primary difference is the maximum update rate: the AD9716BCPZ supports up to 125 MSPS, while the AD9717BCPZ supports up to 250 MSPS. The AD9717 also offers higher guaranteed SFDR performance at higher frequencies due to its faster core.
Are the AD9716BCPZ and AD9717BCPZ pin-compatible?
Yes. Both devices are offered in the same 40-lead LFCSP (CP-40-1) package with identical pin functions, allowing the AD9717BCPZ to be used as a drop-in upgrade for the AD9716BCPZ in existing PCB layouts, provided the higher speed and power requirements are validated.
What is the resolution and channel count of these DACs?
Both the AD9716BCPZ and AD9717BCPZ are dual-channel (two DACs per package) 16-bit current-steering digital-to-analog converters, suitable for I/Q transmit signal paths in communications systems.
What are the maximum update rates of the AD9716BCPZ and AD9717BCPZ?
The AD9716BCPZ has a maximum update rate of 125 MSPS, while the AD9717BCPZ has a maximum update rate of 250 MSPS. Both specifications are per DAC channel and are verified in the respective Analog Devices datasheets.
Do these DACs include an on-chip numeric controlled oscillator (NCO) and digital interpolation?
Yes. Both the AD9716BCPZ and AD9717BCPZ integrate a digital interpolation filter and a numerically controlled oscillator (NCO) for digital upconversion, along with a serial port interface (SPI) for configuration. These features are common to both speed grades.
What is the supply voltage and typical power consumption of these devices?
Both devices operate from a 1.8 V analog and digital supply, with a 3.3 V SPI/IO supply option. Typical power consumption is approximately 100 mW per DAC channel at lower sample rates, increasing with update rate; the AD9717BCPZ consumes more power at its higher 250 MSPS maximum rate. Designers should consult the datasheets for exact power figures at specific operating conditions.
Can the AD9717BCPZ replace the AD9716BCPZ in an existing design without firmware changes?
Because both parts share the same package, pinout, and SPI register map, the AD9717BCPZ can generally replace the AD9716BCPZ without firmware changes. However, the higher maximum clock rate and power dissipation of the AD9717BCPZ must be validated against the board's thermal and power delivery design.