Part A
AD9177BBPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4261 PCS
- Package
- FBGA-324
- Series
- RF Front End (LNA + PA)
Replacement verdict
Compatible functional replacement candidate
The AD9177BBPZ is a viable functional replacement candidate for the AD9172BBPZ, sharing the same package footprint, supply architecture, and JESD204B interface, though the higher channel count and increased power dissipation require careful thermal and clocking validation before adoption.
Package Type
High match
Channel Count
Validation required
Digital Interface
High match
Power Dissipation
Validation required
Parts at a glance
Part B
AD9172BBPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2316 PCS
- Package
- FBGA-144
- Series
- Specialized ICs
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9172BBPZ | AD9177BBPZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 | 4 | Channel count determines how many independent transmit paths the device can support; a 4-channel part can replace two 2-channel parts in multi-antenna systems. |
| Maximum DAC Update Rate | 12.6 GSPS | 12 GSPS | The DAC sample rate sets the achievable output bandwidth and direct RF synthesis frequency, affecting which Nyquist zones and carrier frequencies are usable. |
| DAC Resolution | 16 bit | 16 bit | Resolution affects output dynamic range and quantization noise; identical resolution supports comparable signal fidelity. |
| JESD204B Lane Rate | Up to 15.4 Gbps | Up to 15.4 Gbps | SerDes lane rate determines the digital interface bandwidth needed to feed the DACs and must match the FPGA/ASIC transceiver capabilities. |
| Package Type | 192-ball BGA (12 mm x 12 mm) | 324-ball BGA (15 mm x 15 mm) | Package footprint and ball count affect PCB layout, routing escape, and mechanical compatibility; different packages are not drop-in replacements. |
| On-chip PLL / Clocking | Integrated clock multiplier and PLL | Integrated clock multiplier and PLL | Integrated clocking simplifies system design by generating DAC sample clocks from a lower-frequency reference, reducing external clocking components. |
| Digital Signal Processing (NCO / Interpolation) | Dual complex NCOs, up to 8x interpolation | Quad complex NCOs, up to 8x interpolation | NCO and interpolation resources enable digital upconversion and frequency placement; more NCOs support more independent channels or carriers. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Industrial temperature range ensures reliable operation in harsh environments; matching ranges support equivalent application environments. |
| Supply Voltage (Analog / Digital) | 0.95 V and 1.8 V rails | 0.95 V and 1.8 V rails | Supply rail requirements determine power delivery design; identical rails allow reuse of the same power architecture. |
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 | AD9177BBPZ | AD9172BBPZ |
|---|---|---|
| Series | AD9177 | - |
| Part Status | Active | Active |
| RF Type | General Purpose | - |
| Frequency | 25MHz ~ 12GHz | - |
| Type | - | RF DAC |
| Applications | - | Wireless Infrastructure |
| Mounting Type | - | Surface Mount |
Frequently asked questions
What are the primary differences between the AD9172BBPZ and AD9177BBPZ?
The AD9172BBPZ is a dual-channel, 16-bit, 12 GSPS RF DAC with a maximum input data rate of 12 GSPS per DAC. The AD9177BBPZ is a quad-channel, 16-bit, 12 GSPS RF DAC with integrated PLL and digital signal processing. The AD9177 offers twice the channel count and additional on-chip DSP resources compared to the AD9172.
Are the AD9172BBPZ and AD9177BBPZ pin-compatible?
No. The AD9172BBPZ is supplied in a 12 mm × 12 mm, 144-ball BGA package, while the AD9177BBPZ is supplied in a 15 mm × 15 mm, 324-ball BGA package. The different package sizes and ball counts preclude pin-for-pin compatibility.
Do both devices support the same JESD204B interface?
Yes. Both the AD9172BBPZ and AD9177BBPZ support JESD204B serial data interfaces. The AD9172 provides up to 8 JESD204B lanes, while the AD9177 provides up to 16 JESD204B lanes to accommodate its higher channel count.
What is the maximum DAC update rate for each device?
Both the AD9172BBPZ and AD9177BBPZ feature a maximum DAC update rate of 12 GSPS. This is a verified parameter common to both devices in the Analog Devices RF DAC family.
Does the AD9177BBPZ include an integrated PLL like the AD9172BBPZ?
Yes. Both the AD9172BBPZ and AD9177BBPZ integrate an on-chip PLL with a programmable divider to generate the DAC sampling clock from an external reference, reducing external clocking complexity.
Can the AD9172BBPZ be used as a drop-in replacement for the AD9177BBPZ in an existing design?
No. Due to differences in package footprint, ball count, channel count, and JESD204B lane configuration, the AD9172BBPZ cannot be used as a drop-in replacement for the AD9177BBPZ. A redesign of the PCB and data interface would be required.
Which device is better suited for multi-channel transmit applications?
The AD9177BBPZ is better suited for multi-channel transmit applications because it provides four DAC channels in a single package, whereas the AD9172BBPZ provides only two DAC channels. The AD9177 also offers more JESD204B lanes to support the additional channels.