Part A
AD9144BCPZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3069 PCS
- Package
- LFCSP-88
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9144BCPZ is a higher-performance dual-channel member of the same Analog Devices TxDAC family as the AD9142ABCPZ, sharing the same 72-lead LFCSP footprint and JESD204B serial interface. It is a viable functional upgrade candidate for designs that can accommodate its higher sample rate, wider data path, and increased power envelope, but it is not a pin-for-pin drop-in substitute without full system-level validation.
Package and Pinout
High match
Digital Interface
High match
Resolution and Sample Rate
Validation required
Power Consumption
Validation required
Parts at a glance
Part B
AD9142ABCPZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3323 PCS
- Package
- LFCSP-72
- 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 | AD9144BCPZ | Why it matters |
|---|---|---|---|
| Resolution (DAC bits) | 16 | 16 | Both are 16-bit DACs, so quantization noise and dynamic range are comparable for signal synthesis. |
| Number of DAC Channels | 2 | 4 | Channel count determines how many independent transmit paths can be driven; the AD9144 supports twice as many channels, affecting multi-antenna or I/Q architectures. |
| Maximum Update Rate (MSPS) | 1600 | 2800 | Higher update rate enables wider instantaneous bandwidth and higher intermediate frequencies, which is critical for wideband radio and instrumentation designs. |
| JESD204B Lane Rate (Gbps) | 10 | 12.5 | The serial lane rate limits the maximum data throughput from the FPGA/ASIC; a higher rate supports more channels and higher sample rates over the same link. |
| JESD204B Lane Count | 4 | 8 | Lane count affects board routing complexity and the number of SERDES channels required on the host device. |
| Output Type | Current-steering DAC | Current-steering DAC | Both use current-steering outputs, so the external output network and termination approach are similar. |
| Package | 72-lead LFCSP | 88-lead LFCSP | Different package footprints and pin counts mean the PCB layout must be redesigned; they are not drop-in replacements. |
| Supply Voltage (Analog/Digital) | 1.8 V / 1.8 V | 1.8 V / 1.8 V | Identical supply rails simplify power-tree reuse, though current consumption differs with channel count and speed. |
| Operating Temperature Range | -40 to +85 °C | -40 to +85 °C | Matching industrial temperature ranges allow use in the same environmental conditions. |
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 | AD9142ABCPZ |
|---|---|---|
| Series | TxDAC+® | TxDAC+® |
| Part Status | Active | Active |
| 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 AD9142ABCPZ and AD9144BCPZ?
The AD9142A is a dual 16-bit, 1.6 GSPS DAC with an on-chip PLL and interpolation filters, while the AD9144 is a quad 16-bit, 2.8 GSPS DAC with integrated interpolation and a JESD204B interface. The AD9144 offers twice the channel count and higher maximum update rate, whereas the AD9142A targets dual-channel applications with a parallel LVDS input interface.
Do the AD9142ABCPZ and AD9144BCPZ use the same package and pinout?
Both devices are offered in a 72-lead LFCSP package, but their pinouts and pin functions differ because the AD9144 integrates four DAC cores and a JESD204B serial interface, while the AD9142A uses a parallel LVDS data interface. They are not pin-compatible and cannot be dropped into the same PCB land pattern without redesign.
What is the maximum DAC update rate of each device?
The AD9142A supports a maximum DAC update rate of 1.6 GSPS, while the AD9144 supports up to 2.8 GSPS. The higher rate of the AD9144 enables wider signal bandwidths and higher oversampling ratios in wideband transmit applications.
What digital input interface does each DAC use?
The AD9142A uses a parallel LVDS input data interface with on-chip interpolation filters. The AD9144 uses a JESD204B serial interface with multiple lanes, which reduces PCB routing complexity and supports higher channel counts in multi-converter systems.
How many DAC channels does each device provide?
The AD9142A is a dual-channel (2-DAC) device, while the AD9144 is a quad-channel (4-DAC) device. The AD9144 is therefore suited to systems requiring four synchronized transmit channels, such as multi-antenna or I/Q pair architectures.
Do both devices include an on-chip PLL and interpolation filters?
Yes. Both the AD9142A and AD9144 integrate an on-chip PLL for clock generation and digital interpolation filters to simplify system clocking and reduce input data rate requirements. Specific interpolation ratios and PLL configurations should be confirmed in the respective manufacturer datasheets.
Can the AD9142ABCPZ be used as a direct substitute for the AD9144BCPZ?
No. The two devices differ in channel count, maximum update rate, digital input interface, and pinout. A direct substitution is not possible; any replacement requires validation of interface compatibility, clocking, PCB layout, and firmware against the manufacturer datasheets.