Part A
AD9142ABCPZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3323 個数
- Package
- LFCSP-72
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9142ABCPZ and AD9144BCPZRL are both dual-channel, 16-bit high-speed current-steering DACs from Analog Devices in a 72-lead LFCSP package, sharing the same JESD204B serial interface architecture and supply framework. The AD9144BCPZRL offers a higher maximum update rate and wider signal bandwidth, making it a viable functional upgrade candidate for the AD9142ABCPZ in many designs, provided the system clock, JESD204B lane configuration, and thermal budget are validated against the higher-speed device.
Resolution and Channel Count
High match
Package and Pin Configuration
High match
Maximum Update Rate
Validation required
JESD204B Interface Configuration
Validation required
Parts at a glance
Part B
AD9144BCPZRL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5946 個数
- Package
- VFQFN-88
- Series
- データ取得 - デジタル/アナログコンバータ (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 | AD9144BCPZRL | Why it matters |
|---|---|---|---|
| Resolution (DAC Bits) | 16 | 16 | Bit depth determines the quantization noise floor and achievable dynamic range of the synthesized signal. |
| Number of DAC Channels | 2 | 4 | 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 sample rate sets the maximum synthesizable signal bandwidth and the achievable oversampling ratio for image rejection. |
| JESD204B Lane Rate | Up to 10 Gbps | Up to 12.5 Gbps | The serial lane rate determines the maximum data throughput from the FPGA/ASIC and constrains the achievable sample rate per channel. |
| JESD204B Lane Count | 4 lanes | 8 lanes | Lane count affects the interface width and the number of high-speed serial transceivers required on the host device. |
| Package | 72-lead LFCSP (10 x 10 mm) | 88-lead LFCSP (12 x 12 mm) | Package footprint and pinout must match the PCB layout; a different package requires a board redesign and cannot be a drop-in substitute. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rails must be compatible with the existing power tree; mismatched rails require additional regulation and level shifting. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range determines suitability for industrial versus commercial environments and affects thermal design margins. |
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 | AD9144BCPZRL |
|---|---|---|
| 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 1600 MSPS, while the AD9144 is a quad 16-bit DAC with a maximum update rate of 2800 MSPS. The AD9144 integrates four DAC cores in a single package, whereas the AD9142A provides two channels.
Are the AD9142ABCPZ and AD9144BCPZRL pin-compatible?
No. The AD9142ABCPZ is a 72-lead LFCSP and the AD9144BCPZRL is an 88-lead LFCSP. The different package sizes, pin counts, and pin assignments prevent direct PCB footprint compatibility.
What is the maximum DAC update rate for each device?
The AD9142A supports a maximum update rate of 1600 MSPS. The AD9144 supports a maximum update rate of 2800 MSPS, enabling wider signal bandwidths in the transmit path.
How many DAC channels does each device provide?
The AD9142A provides two 16-bit DAC channels. The AD9144 provides four 16-bit DAC channels, making it suitable for multi-antenna or multi-channel transmit architectures.
Do both devices support JESD204B serial interfaces?
Yes. Both the AD9142A and AD9144 include JESD204B high-speed serial interfaces, reducing pin count and simplifying PCB routing compared with parallel LVDS interfaces.
What are the typical applications for the AD9142A versus the AD9144?
The AD9142A is typically used in dual-channel transmit systems such as single-antenna radio transmitters. The AD9144, with four channels and higher update rate, is suited to multi-channel/multi-antenna systems such as MIMO radios and wideband instrumentation.
What package options are available for these parts?
The AD9142ABCPZ is supplied in a 72-lead LFCSP package. The AD9144BCPZRL is supplied in an 88-lead LFCSP package in tape-and-reel format.