Part A
AD9142ABCPZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3323 PCS
- Package
- LFCSP-72
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9142ABCPZ and AD9142BCPZ are functionally equivalent dual 16-bit 1.6 GSPS DACs sharing the same package, pinout, and core specifications; the AD9142ABCPZ is a speed-graded variant rated for a higher maximum update rate, so it can serve as a drop-in replacement for the AD9142BCPZ provided the system timing margin and thermal budget are validated against the higher-grade device.
Resolution and Channel Count
High match
Package and Pinout
High match
Maximum Update Rate
Validation required
Digital Interface
High match
Parts at a glance
Part B
AD9142BCPZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1 PCS
- Package
- VFQFN-72
- Series
- Data Acquisition - Digital to Analog Converters (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 | AD9142BCPZ | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Determines the quantization accuracy of the DAC output; identical resolution means equivalent signal fidelity capability. |
| Number of DAC Channels | 2 | 2 | Dual-channel architecture is required for I/Q signal generation; both parts provide the same channel count. |
| Maximum Update Rate | 1600 MSPS | 1600 MSPS | Sets the maximum sample rate and achievable output bandwidth; matching rates ensure equivalent dynamic performance. |
| Output Interface | JESD204B | JESD204B | Defines the digital input protocol and lane configuration; identical serial interface ensures drop-in compatibility with the host FPGA/ASIC. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Determines power rail requirements and level compatibility; matching rails allow the same board design. |
| Package / Case | 72-Lead LFCSP (10 x 10 mm) | 72-Lead LFCSP (10 x 10 mm) | Footprint and thermal characteristics must match for physical substitutability on an existing PCB. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the environmental envelope for reliable operation; identical ranges mean the same application conditions apply. |
| On-Chip PLL | Yes | Yes | An integrated PLL simplifies clock generation and reduces external components; both parts offer the same clocking flexibility. |
| Digital Interpolation | 2x, 4x, 8x | 2x, 4x, 8x | Interpolation filters relax input data rate requirements and shape the output spectrum; matching options preserve signal-chain design. |
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 | AD9142BCPZ |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | TxDAC+® | TxDAC+® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 2 | 2 |
| Settling Time | 20ns (Typ) | 20ns (Typ) |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | LVDS - Parallel | LVDS - Parallel |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 3.13V ~ 3.47V | 3.13V ~ 3.47V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V | 1.7V ~ 1.9V |
| INL / DNL(LSB) | ±3.7, ±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 is the difference between the AD9142ABCPZ and the AD9142BCPZ?
Both are dual 16-bit, 1.6 GSPS TxDAC+ digital-to-analog converters from Analog Devices in a 72-lead LFCSP package. The AD9142ABCPZ is the standard production grade, while the AD9142BCPZ is a separately orderable grade of the same device family; the distinguishing grade/performance designator is encoded in the part suffix, so the exact specification difference must be confirmed against the Analog Devices datasheet ordering guide before substitution.
Are the AD9142ABCPZ and AD9142BCPZ pin-compatible?
Yes. Both devices are offered in the same 72-lead LFCSP (CP-72) package with the same pinout, so they are pin-compatible and share the same PCB land pattern.
What are the key performance specifications common to both parts?
Both are dual 16-bit DACs with a maximum update rate of 1.6 GSPS, an on-chip 32-bit digital datapath with interpolation, and a serial peripheral interface for configuration. They operate from 1.8 V and 3.3 V supplies and are specified over the industrial temperature range of −40 °C to +85 °C.
Can the AD9142ABCPZ and AD9142BCPZ be used interchangeably in an existing design?
Because they share the same package, pinout, and core architecture, they are generally interchangeable at the board level. However, any grade-specific performance limits (such as speed grade or accuracy grade) must be verified against the Analog Devices ordering guide and the design's requirements before substituting one for the other.
What digital interface do the AD9142ABCPZ and AD9142BCPZ use?
Both devices use a flexible LVDS-compatible digital input interface with on-chip FIFO and interpolation filters, plus a 4-wire SPI port for register configuration and control.
What is the operating temperature range for these DACs?
Both the AD9142ABCPZ and AD9142BCPZ are specified for operation over the industrial temperature range of −40 °C to +85 °C.
Which applications are the AD9142ABCPZ and AD9142BCPZ intended for?
They are intended for wideband communications, cable modem termination systems, wireless infrastructure transmitters, and other high-speed signal synthesis applications requiring dual 16-bit DACs at up to 1.6 GSPS.