Part A
AD9144BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3069 PCS
- Package
- LFCSP-88
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9144BCPZ and AD9142BCPZ share the same 72-lead LFCSP package, dual 16-bit DAC architecture, and JESD204B serial interface, making them functionally aligned for many high-speed signal chain designs. However, the AD9144BCPZ offers a higher maximum update rate and wider output bandwidth than the AD9142BCPZ, so the replacement is viable only when the target design does not require the AD9144's full sampling performance. Designers should validate clocking, digital interface timing, and thermal margins against the specific application before committing to a drop-in substitution.
Package Type
High match
Resolution
High match
Maximum Update Rate
Validation required
Digital Interface
Validation required
Parts at a glance
Part B
AD9142BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1 PCS
- Package
- VFQFN-72
- 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 | AD9144BCPZ | AD9142BCPZ | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both DACs offer 16-bit resolution, so quantization noise and dynamic range are comparable for signal synthesis. |
| Number of DAC Channels | 2 | 2 | Dual-channel architecture supports I/Q transmit paths in both parts, enabling complex baseband upconversion. |
| Maximum Update Rate (DAC Sample Rate) | 2.8 GSPS | 1.6 GSPS | A higher sample rate allows wider instantaneous bandwidth and higher intermediate frequency placement, which is critical for wideband radio and instrumentation designs. |
| JESD204B Lane Rate / Interface | JESD204B, up to 12.5 Gbps lanes | JESD204B, up to 10 Gbps lanes | The serial lane rate determines the maximum data throughput from the FPGA/logic and constrains achievable sample rate and channel count. |
| Supply Voltage (Analog/Digital) | 1.8 V / 1.8 V (with 3.3 V I/O) | 1.8 V / 1.8 V (with 3.3 V I/O) | Matching supply rails simplifies power design and allows drop-in replacement without reworking the power tree. |
| Package | 88-lead LFCSP (12 mm x 12 mm) | 72-lead LFCSP (10 mm x 10 mm) | Different package footprints and pinouts prevent direct board-level substitution without a PCB redesign. |
| Power Consumption (Typical per Channel) | ~1.0 W total (dual channel) | ~0.7 W total (dual channel) | Lower power dissipation affects thermal management and supply sizing, which matters for dense multi-channel systems. |
| SFDR (at rated sample rate) | ~80 dBc (at 2.8 GSPS) | ~78 dBc (at 1.6 GSPS) | Spurious-free dynamic range determines spectral purity and suitability for demanding communications and test applications. |
| On-chip Interpolation / NCO | 2x/4x/8x interpolation with digital NCO | 2x/4x/8x interpolation with digital NCO | Integrated interpolation and NCO reduce FPGA resource usage and enable digital upconversion in both parts. |
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 | AD9144BCPZ | AD9142BCPZ |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | TxDAC+® | TxDAC+® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 4 | 2 |
| Settling Time | 20ns (Typ) | 20ns (Typ) |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | JESD204B | LVDS - Parallel |
| Reference Type | Internal | External, Internal |
| Voltage - Supply, Analog | 3.13V ~ 3.47V | 3.13V ~ 3.47V |
| Voltage - Supply, Digital | 1.14V ~ 1.26V | 1.7V ~ 1.9V |
| INL / DNL(LSB) | ±2, ±1 | ±3.7, ±2.1 |
| Architecture | Oversampling Interpolating DAC | Oversampling Interpolating DAC |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9144BCPZ and AD9142BCPZ?
The AD9144BCPZ is a quad-channel, 16-bit, 2.8 GSPS DAC, while the AD9142BCPZ is a dual-channel, 16-bit, 1.6 GSPS DAC. The AD9144 offers twice the channel count and a higher maximum update rate, making it suitable for higher-density, higher-bandwidth applications.
Are the AD9144BCPZ and AD9142BCPZ pin-compatible?
No. The AD9144BCPZ is a 72-lead LFCSP and the AD9142BCPZ is a 72-lead LFCSP, but they are not pin-compatible due to different channel counts and signal assignments. A direct drop-in replacement is not possible without PCB redesign.
What is the maximum DAC update rate for each device?
The AD9144BCPZ supports a maximum update rate of 2.8 GSPS, while the AD9142BCPZ supports a maximum update rate of 1.6 GSPS. Both are 16-bit resolution DACs.
Do both devices support JESD204B serial interface?
Yes. Both the AD9144BCPZ and AD9142BCPZ include a JESD204B serial input interface, enabling high-speed serial data transfer and simplified PCB layout compared to parallel interfaces.
What are the typical applications for the AD9144BCPZ versus the AD9142BCPZ?
The AD9144BCPZ is typically used in wideband multi-channel transmit systems, such as 5G massive MIMO and phased-array radar, where four synchronized channels and high update rates are required. The AD9142BCPZ is used in dual-channel transmit applications such as point-to-point microwave links and cable infrastructure, where two channels at up to 1.6 GSPS are sufficient.
Do both DACs support the same digital signal processing features?
Both devices include digital interpolation filters, a numerically controlled oscillator (NCO), and complex digital modulation capabilities. However, the AD9144BCPZ provides these features across four channels, while the AD9142BCPZ provides them across two channels.
What is the power consumption difference between the AD9144BCPZ and AD9142BCPZ?
The AD9144BCPZ, with four channels at up to 2.8 GSPS, consumes more total power than the AD9142BCPZ, which has two channels at up to 1.6 GSPS. Exact power figures depend on sample rate, channel configuration, and operating mode, and should be verified from the respective manufacturer datasheets.
Can the AD9142BCPZ be used as a replacement for the AD9144BCPZ in an existing design?
No. The AD9142BCPZ has only two channels versus four on the AD9144BCPZ, a lower maximum update rate, and a different pin assignment. It cannot directly replace the AD9144BCPZ without significant redesign of the signal chain, PCB layout, and system architecture.