Part A
AD9142ABCPZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3323 PCS
- Package
- LFCSP-72
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9142ABCPZ and AD9144BCPAZRL are both dual-channel, 16-bit high-speed current-steering DACs from the same Analog Devices TxDAC family, sharing a 72-lead LFCSP package and JESD204B serial interface. While the AD9144BCPAZRL offers a higher maximum update rate and wider signal bandwidth, the AD9142ABCPZ remains a viable functional substitute in applications where the lower sample rate and bandwidth are acceptable. Engineers should validate the interface lane configuration, clocking requirements, and thermal performance against the target design before committing to a replacement.
Resolution and Channel Count
High match
Maximum Update Rate
Validation required
Package Type
High match
Digital Interface
Validation required
Parts at a glance
Part B
AD9144BCPAZRL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5659 PCS
- Package
- VFQFN-88
- Series
- Acquisition de données - convertisseur numérique - analogique (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 | AD9142ABCPZ | AD9144BCPAZRL | Why it matters |
|---|---|---|---|
| Resolution (DAC Bits) | 16 bit | 16 bit | Bit depth determines the quantization noise floor and achievable dynamic range of the synthesized signal. |
| Number of DAC Channels | 2 (Dual) | 4 (Quad) | Channel count dictates how many independent transmit paths can be driven from a single device, affecting system architecture and board space. |
| Maximum Update Rate | 1600 MSPS | 2800 MSPS | The DAC update rate sets the maximum synthesizable signal bandwidth and the achievable oversampling ratio for the transmit chain. |
| JESD204B Lane Rate | Up to 10 Gbps | Up to 12.5 Gbps | The serial lane rate determines the interface bandwidth available to feed samples and constrains the maximum sample rate per channel. |
| JESD204B Lane Count | 1 to 8 lanes | 1 to 8 lanes | Lane count flexibility affects how the converter can be interfaced to the FPGA/ASIC and the achievable throughput per lane. |
| Output Type | Current-steering DAC | Current-steering DAC | Output topology determines the required external termination and the interface to the analog reconstruction/amplifier stage. |
| Package | 72-lead LFCSP (10 x 10 mm) | 88-lead LFCSP (12 x 12 mm) | Package footprint and pinout affect PCB layout, thermal design, and whether the parts are drop-in compatible. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rails must match the board power architecture; mismatches require additional regulation or level shifting. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range confirms suitability for industrial and commercial environments and affects thermal margin. |
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 | AD9142ABCPZ | AD9144BCPAZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | TxDAC+® | TxDAC+® |
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 2 | 4 |
| Settling Time | 20ns (Typ) | 20ns (Typ) |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | LVDS - Parallel | JESD204B |
| Reference Type | External, Internal | Internal |
| Voltage - Supply, Analog | 3.13V ~ 3.47V | 3.13V ~ 3.47V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V | 1.14V ~ 1.26V |
| INL / DNL(LSB) | ±3.7, ±2.1 | ±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 AD9142A and AD9144?
The AD9142A is a dual 16-bit DAC with a maximum update rate of 1.6 GSPS, while the AD9144 is a quad 16-bit DAC with a maximum update rate of 2.8 GSPS. The AD9144 integrates four DAC channels in a single package, whereas the AD9142A provides two channels, making the AD9144 better suited for higher-channel-count transmit architectures.
Are the AD9142ABCPZ and AD9144BCPAZRL pin-compatible?
No. The AD9142ABCPZ is supplied in a 72-lead LFCSP package, and the AD9144BCPAZRL is supplied in an 88-lead LFCSP package. The different package sizes and pin counts mean the two devices are not pin-compatible and require different PCB land patterns.
What is the maximum DAC update rate for each device?
The AD9142A supports a maximum update rate of 1.6 GSPS per DAC channel. The AD9144 supports a maximum update rate of 2.8 GSPS per DAC channel, allowing wider signal bandwidths and higher oversampling ratios in the AD9144 design.
How many DAC channels does each device provide?
The AD9142A is a dual-channel (2-DAC) device. The AD9144 is a quad-channel (4-DAC) device. This channel-count difference is a primary selection criterion when choosing between the two parts for a given transmitter signal chain.
Do both devices support the same digital interface?
Both devices provide a JESD204B serial interface for digital input data. The AD9144 supports JESD204B lane rates up to 12.5 Gbps, while the AD9142A supports JESD204B lane rates up to 10 Gbps. Designers should confirm the required lane rate and link configuration against the respective datasheets.
What is the resolution of the AD9142A and AD9144 DACs?
Both the AD9142A and the AD9144 are 16-bit DACs. The 16-bit resolution is common to both parts, so the selection between them is driven by channel count, update rate, package, and interface lane rate rather than by resolution.
Can the AD9144BCPAZRL be used as a drop-in replacement for the AD9142ABCPZ?
No. Because the devices differ in package (88-lead versus 72-lead LFCSP), channel count (quad versus dual), maximum update rate (2.8 GSPS versus 1.6 GSPS), and JESD204B lane rate, the AD9144BCPAZRL cannot be used as a drop-in replacement for the AD9142ABCPZ. Any substitution requires a full design review against the manufacturer datasheets.