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 AD9146BCPZRL is a viable functional replacement candidate for the AD9144BCPZ in dual-channel 16-bit DAC applications, sharing the same LFCSP package, 1.8 V/3.3 V supply architecture, and JESD204B serial interface. Designers should validate the reduced maximum update rate and channel count against system requirements before substitution.
Channel Count
Validation required
Maximum Update Rate
Validation required
Package Type
High match
Digital Interface
High match
Parts at a glance
Part B
AD9146BCPZRL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2396 PCS
- Package
- WFQFN-48
- 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 | AD9144BCPZ | AD9146BCPZRL | Why it matters |
|---|---|---|---|
| Resolution (DAC Bits) | 16 bit | 16 bit | Bit depth determines the quantization noise floor and dynamic range of the reconstructed analog signal; both parts match here, so resolution is not a differentiator. |
| Number of DAC Channels | 2 (dual) | 2 (dual) | Channel count must match the signal chain architecture; both are dual-channel, so they are interchangeable from a channel-count standpoint. |
| Maximum Update Rate | 2.8 GSPS | 1.2 GSPS | The maximum DAC sample rate sets the achievable output bandwidth and oversampling ratio; the AD9144 supports more than twice the update rate, enabling wider-band or higher-IF synthesis. |
| JESD204B Lane Rate / Interface | JESD204B, up to 12.5 Gbps lanes | JESD204B, up to 3.125 Gbps lanes | The serial lane rate determines how much digital data can be transported to the DAC and constrains the FPGA/ASIC interface design; the AD9144 supports much faster lanes. |
| JESD204B Lane Count | Up to 8 lanes | Up to 4 lanes | Lane count affects PCB routing complexity and required SERDES resources in the host device; the AD9144 offers more lanes for higher aggregate throughput. |
| Supply Voltage (Analog/Digital) | 1.8 V / 1.8 V (with 3.3 V I/O options) | 1.8 V / 1.8 V (with 3.3 V I/O options) | Supply rails must match the board power design; identical rails mean the same power tree can be reused. |
| Package | 88-lead LFCSP (12 mm x 12 mm) | 48-lead LFCSP (7 mm x 7 mm) | Package footprint and pinout determine PCB layout compatibility; the different package sizes mean the two parts are not drop-in footprint compatible. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range suitability is identical, so environmental constraints do not differentiate the parts. |
| Power Consumption (Typical) | ~1.5 W (at 2.8 GSPS, full operating) | ~0.6 W (at 1.2 GSPS, full operating) | Power dissipation drives thermal design and supply sizing; the higher-speed AD9144 consumes substantially more power, which must be accounted for in the thermal budget. |
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 | AD9146BCPZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| 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 | 1.71V ~ 1.89V |
| INL / DNL(LSB) | ±2, ±1 | ±3.7, ±2.1 |
| Architecture | Oversampling Interpolating DAC | Current Source |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9144BCPZ and the AD9146BCPZRL?
The AD9144BCPZ is a quad-channel, 16-bit, 2.8 GSPS DAC, while the AD9146BCPZRL is a dual-channel, 16-bit, 1.2 GSPS DAC. The AD9144 offers twice the channel count and more than twice the maximum update rate, but both are members of Analog Devices' TxDAC+ family and share similar JESD204B interface architecture and 72-lead LFCSP packaging.
Are the AD9144BCPZ and AD9146BCPZRL pin-compatible?
No. Although both devices are housed in a 72-lead LFCSP package, the AD9144BCPZ is a quad-channel device and the AD9146BCPZRL is a dual-channel device with different pin assignments and channel routing. A direct drop-in replacement is not supported; the PCB layout and pin functions must be validated against each device's datasheet.
What is the maximum DAC update rate for each device?
The AD9144BCPZ supports a maximum update rate of 2.8 GSPS, while the AD9146BCPZRL supports a maximum update rate of 1.2 GSPS. Designs requiring higher signal bandwidth or wider Nyquist zones should account for this difference.
Do both devices support the JESD204B serial interface?
Yes. Both the AD9144BCPZ and AD9146BCPZRL include a JESD204B-compliant serial input interface, supporting multi-lane synchronization and deterministic latency. The AD9144 provides more lanes to accommodate its higher channel count and data rate.
How do the channel counts differ between the AD9144BCPZ and AD9146BCPZRL?
The AD9144BCPZ integrates four 16-bit DAC channels, whereas the AD9146BCPZRL integrates two 16-bit DAC channels. The AD9144 is therefore suited to multi-antenna or wideband transmit arrays, while the AD9146 targets dual-channel transmit paths.
What is the difference in power consumption between the two devices?
The AD9144BCPZ, with four channels operating at up to 2.8 GSPS, consumes more total power than the dual-channel AD9146BCPZRL operating at up to 1.2 GSPS. Exact power figures depend on sample rate, channel enablement, and operating mode, and should be taken from the respective datasheets' power dissipation specifications.
Can the AD9146BCPZRL be used as a lower-cost alternative to the AD9144BCPZ?
Only if the application requires no more than two DAC channels and a maximum update rate of 1.2 GSPS. Because the devices differ in channel count, pinout, and maximum sample rate, substituting the AD9146BCPZRL for the AD9144BCPZ requires a redesign of the DAC interface and validation against the system's bandwidth and channel requirements.
What package and temperature grade do the AD9144BCPZ and AD9146BCPZRL share?
Both devices are offered in a 72-lead LFCSP (CP-72) package. The "BCPZ" suffix in both part numbers indicates the industrial temperature range version in the LFCSP package; the "RL" suffix on the AD9146BCPZRL denotes tape-and-reel packaging.