Part A
AD9144BCPZ
ADI公司
- Lifecycle
- Active
- Stock
- 3069 件
- Package
- LFCSP-88
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Compatible functional replacement candidate
The AD9142BCPZRL is a viable functional replacement candidate for the AD9144BCPZ in many dual-channel DAC applications, sharing the same 72-lead LFCSP footprint, 1.8 V/3.3 V supply architecture, and JESD204B serial interface. However, designers must validate the reduced maximum update rate (1.6 GSPS vs 2.8 GSPS), narrower digital datapath (16-bit vs 16-bit with higher oversampling headroom), and lower on-chip interpolation flexibility before committing to a drop-in substitution in high-speed signal chains.
Maximum Update Rate
Validation required
Package and Pinout
High match
Digital Interface
High match
On-Chip Interpolation
Validation required
Parts at a glance
Part B
AD9142BCPZRL
ADI公司
- Lifecycle
- Active
- Stock
- 7496 件
- Package
- VFQFN-72
- Series
- 資料獲取-數模轉換器（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 | AD9142BCPZRL | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Bit depth determines the quantization noise floor and achievable dynamic range of the DAC output. |
| Number of DAC Channels | 4 | 2 | Channel count determines how many independent analog outputs are available, directly affecting system architecture and board layout. |
| Maximum Update Rate | 2.8 GSPS | 1.6 GSPS | The DAC update rate sets the maximum synthesizable signal bandwidth and the achievable oversampling ratio. |
| JESD204B Lane Rate | Up to 12.5 Gbps | Up to 10 Gbps | The serial lane rate constrains the maximum data throughput between the FPGA/ASIC and the DAC, affecting achievable sample rates. |
| JESD204B Lane Count | 4 or 8 lanes | 2 or 4 lanes | Lane count affects the interface width and the number of high-speed serial transceivers required on the host device. |
| Package | 88-lead LFCSP (12 x 12 mm) | 72-lead LFCSP (10 x 10 mm) | Package footprint and pinout must match the PCB layout; a different package requires a board redesign. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rails must be compatible with the existing power distribution network of the target design. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range determines suitability for industrial versus commercial environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9144BCPZ | AD9142BCPZRL |
|---|---|---|
| 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 the AD9142BCPZRL?
The AD9144BCPZ is a quad-channel, 16-bit, 2.8 GSPS DAC, while the AD9142BCPZRL is a dual-channel, 16-bit, 1.6 GSPS DAC. The AD9144 offers twice the channel count and a higher maximum update rate, whereas the AD9142 provides two channels at a lower sample rate. Both are members of Analog Devices' TxDAC+ family and share similar JESD204B interface architecture.
Are the AD9144BCPZ and AD9142BCPZRL pin-compatible?
No. The AD9144BCPZ is supplied in an 88-lead LFCSP package, while the AD9142BCPZRL is supplied in a 72-lead LFCSP package. The different package sizes and pin counts mean the two devices are not pin-compatible and cannot be dropped into the same PCB footprint without redesign.
What is the maximum DAC update rate for each device?
The AD9144BCPZ supports a maximum update rate of 2.8 GSPS. The AD9142BCPZRL supports a maximum update rate of 1.6 GSPS. The higher rate of the AD9144 makes it better suited to wideband and multi-channel transmit applications requiring higher Nyquist zones.
Do both devices support the JESD204B serial interface?
Yes. Both the AD9144BCPZ and AD9142BCPZRL include a JESD204B-compliant serial input interface. The AD9144 provides multiple JESD204B lanes to support its four DAC channels, while the AD9142 uses a JESD204B interface appropriate for its dual-channel configuration. Designers should confirm lane count and lane rate requirements against the respective datasheets.
How do the channel counts compare between the two parts?
The AD9144BCPZ integrates four 16-bit DAC channels, whereas the AD9142BCPZRL integrates two 16-bit DAC channels. For systems requiring four transmit paths, the AD9144 reduces component count, while the AD9142 is appropriate for dual-channel transmit architectures.
Which device is better suited for multi-channel transmit applications?
The AD9144BCPZ is generally better suited for multi-channel transmit applications because it provides four DAC channels at up to 2.8 GSPS in a single package. The AD9142BCPZRL, with two channels at up to 1.6 GSPS, is more appropriate for dual-channel or lower-channel-count designs where the additional channels and higher rate of the AD9144 are not required.
Can the AD9142BCPZRL be used as a drop-in replacement for the AD9144BCPZ?
No. Because the two devices differ in channel count, maximum update rate, package size, and pin count, the AD9142BCPZRL cannot be used as a drop-in replacement for the AD9144BCPZ. Any substitution requires a PCB redesign and revalidation of the JESD204B link, clocking, and output filtering against the target datasheet.