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 higher-channel-count member of the same Analog Devices AD917x high-speed DAC family and shares the same 12 mm × 12 mm BGA footprint, JESD204B serial interface, and dual 16-bit DAC core architecture as the AD9173BBPZ. It can serve as a functional replacement candidate where additional synchronized DAC channels are required, but the increased channel count, higher power envelope, and different channel-to-output mapping must be validated against the target application's thermal, power, and signal-chain requirements before substitution.
Package Type
High match
Serial Interface
High match
Channel Count
Validation required
Power Consumption
Validation required
Parts at a glance
Part B
AD9173BBPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1777 PCS
- Package
- FBGA-144
- Series
- ICs especializados
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9173BBPZ | AD9177BBPZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 2 | 4 | Channel count determines how many independent transmit paths the device can drive; 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 signal bands can be generated. |
| JESD204B Lane Rate | Up to 15.5 Gbps | Up to 15.5 Gbps | SerDes lane rate determines the digital interface bandwidth needed to feed the DACs and must match the host FPGA/ASIC capabilities. |
| Resolution | 16 bit | 16 bit | DAC resolution affects dynamic range and quantization noise; identical resolution supports similar signal fidelity expectations. |
| Package | 192-ball BGA | 324-ball BGA | Package footprint and ball count affect PCB layout, routing, and whether a drop-in replacement is physically possible. |
| On-chip PLL / Clocking | Integrated PLL with multi-tile sync | Integrated PLL with multi-tile sync | Integrated clocking simplifies system design and enables deterministic latency across multiple converters for phased-array applications. |
| Digital Signal Processing | Dual complex DDS, interpolation filters, NCO | Quad complex DDS, interpolation filters, NCO | On-chip DSP (DDS/NCO/interpolation) determines channelization flexibility and the ability to synthesize multiple carriers without external logic. |
| Supply Voltage | 0.95 V, 1.8 V, 2.5 V rails | 0.95 V, 1.8 V, 2.5 V rails | Supply rail requirements affect power delivery design and compatibility with existing board power architectures. |
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 | AD9173BBPZ |
|---|---|---|
| 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 key differences between the AD9173BBPZ and AD9177BBPZ?
The AD9173 is a dual-channel, 16-bit, 12 GSPS RF DAC with a maximum input data rate of 6 GSPS per channel and an on-chip PLL. The AD9177 is a quad-channel, 16-bit, 12 GSPS RF DAC with a maximum input data rate of 6 GSPS per channel, also with an on-chip PLL. The primary difference is channel count: the AD9173 provides two DAC channels, while the AD9177 provides four DAC channels. Both are housed in the same 144-ball BGA package (12 mm × 12 mm) and share the same JESD204B interface architecture.
Are the AD9173BBPZ and AD9177BBPZ pin-compatible?
Both devices are offered in the same 144-ball CSP_BGA package (12 mm × 12 mm, 0.8 mm pitch). However, pin-compatibility cannot be assumed solely from package identity; the AD9177 uses additional pins for its two extra DAC channels and associated signal routing. Designers must verify the pin function assignments in the respective datasheets before considering any board-level interchange.
Do both devices support the JESD204B serial interface?
Yes. Both the AD9173 and AD9177 support the JESD204B serial data interface. The AD9173 uses up to four JESD204B lanes per DAC pair, while the AD9177 uses up to eight JESD204B lanes to accommodate its four DAC channels. Both support subclass 1 deterministic latency and multi-chip synchronization.
What is the maximum DAC update rate for each device?
Both the AD9173 and AD9177 feature a maximum DAC update rate of 12 GSPS. The maximum input data rate per channel is 6 GSPS for both devices. These parameters are specified in the respective Analog Devices datasheets.
Can the AD9173BBPZ be used as a drop-in replacement for the AD9177BBPZ?
No. The AD9177 provides four DAC channels while the AD9173 provides only two. A drop-in replacement would require the target design to use only two channels and to have a PCB layout and pin assignment compatible with the AD9173. The additional channel pins and signal routing on the AD9177 mean the two devices are not functionally interchangeable without design validation against both datasheets.
Do both devices include an on-chip PLL for clock generation?
Yes. Both the AD9173 and AD9177 integrate an on-chip PLL with a programmable divider and a voltage-controlled oscillator to generate the DAC sampling clock from a lower-frequency reference. This reduces external clocking complexity in both devices.
What are the typical applications for the AD9173BBPZ versus the AD9177BBPZ?
The AD9173, with two 16-bit 12 GSPS DAC channels, is typically used in wideband single or dual-transmit channel systems such as wireless base station transmitters and cable infrastructure. The AD9177, with four channels, is suited to multi-antenna and multi-channel transmit architectures, including massive MIMO and phased-array systems, where four synchronized DAC channels are required in a single package.