Part A
AD9739ABBCZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3752 PCS
- Package
- BGA-160
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9739ABBCZ is a pin-compatible functional upgrade candidate for the AD9736BBCZ, sharing the same 160-lead CSP-BGA footprint, 1.8 V/3.3 V supply architecture, and LVDS input interface while delivering a higher 2.5 GSPS update rate versus the AD9736's 1.2 GSPS. Designers should validate the higher power envelope and dynamic performance requirements against the target application before substituting, but the shared package, resolution, and interface make it a strong drop-in evaluation candidate.
Package Type
High match
Resolution
High match
Update Rate
Validation required
Power Consumption
Validation required
Parts at a glance
Part B
AD9736BBCZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5340 PCS
- Package
- BGA-160
- 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 | AD9736BBCZ | AD9739ABBCZ | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Both DACs offer 14-bit resolution, so quantization noise and effective dynamic range are comparable for signal synthesis. |
| Maximum Update Rate | 1200 MSPS | 2500 MSPS | The higher update rate of the AD9739A enables wider signal bandwidths and higher output frequencies, which is critical for RF and wideband applications. |
| Output Type | Current-steering DAC (differential current output) | Current-steering DAC (differential current output) | Both provide differential current outputs, allowing similar analog front-end interfacing and transformer-coupled output designs. |
| Supply Voltage | 1.8 V to 3.3 V (digital), 3.3 V (analog) | 1.8 V (digital), 3.3 V (analog) | Supply rail requirements affect board-level power design and compatibility with existing power architectures. |
| Power Consumption | Approximately 1.1 W at 1200 MSPS | Approximately 1.1 W at 2500 MSPS | Power dissipation influences thermal management and whether the part fits within the system's thermal budget. |
| Data Interface | LVDS (dual-port, DDR) | LVDS (dual-port, DDR) | Matching LVDS interfaces simplifies FPGA or DSP connectivity and PCB routing between the two parts. |
| Package | 160-ball CSP-BGA | 160-ball CSP-BGA | Identical package and pinout support drop-in replacement on an existing PCB layout. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The same industrial temperature range ensures both parts suit the same environmental conditions. |
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 | AD9739ABBCZ | AD9736BBCZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 14 | 14 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 13µs (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 | 1.7V ~ 1.9V, 3.1V ~ 3.5V | 1.7V ~ 1.9V, 3.13V ~ 3.47V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V, 3.1V ~ 3.5V | 1.7V ~ 1.9V, 3.13V ~ 3.47V |
| INL / DNL(LSB) | ±2.5, ±2 | ±1, ±0.6 |
| Architecture | Quad-Switch | Oversampling Interpolating DAC |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9736BBCZ and AD9739ABBCZ?
The AD9736BBCZ is a 14-bit, 1.2 GSPS RF DAC, while the AD9739ABBCZ is a 14-bit, 2.5 GSPS RF DAC. The AD9739ABBCZ offers a higher maximum update rate and includes a dual-port LVDS data interface with a DLL-based timing scheme, whereas the AD9736BBCZ uses a single-port LVDS interface. Both are housed in a 160-ball CSP_BGA package and are functionally similar in resolution and RF DAC architecture.
Are the AD9736BBCZ and AD9739ABBCZ pin-compatible?
No. Although both devices are packaged in a 160-ball CSP_BGA, the AD9736BBCZ and AD9739ABBCZ have different pin assignments and interface architectures. The AD9739ABBCZ uses a dual-port LVDS input with a DLL clock timing scheme, while the AD9736BBCZ uses a single-port LVDS input. A direct drop-in replacement is not supported without PCB redesign and validation against the respective datasheets.
What is the maximum update rate of each device?
The AD9736BBCZ supports a maximum DAC update rate of 1.2 GSPS. The AD9739ABBCZ supports a maximum DAC update rate of 2.5 GSPS. Designers should select based on the required signal bandwidth and system clocking constraints.
Do both devices have the same resolution and DAC architecture?
Yes. Both the AD9736BBCZ and AD9739ABBCZ are 14-bit RF digital-to-analog converters based on Analog Devices' proprietary current-steering DAC architecture. Both are specified for RF synthesis applications and support similar output compliance and analog output characteristics per their respective datasheets.
What data interface does each device use?
The AD9736BBCZ uses a single-port LVDS data interface. The AD9739ABBCZ uses a dual-port LVDS data interface with an integrated DLL to manage input timing. This difference affects FPGA/ASIC interfacing, PCB layout, and clocking design, so the two parts are not interchangeable at the interface level.
Are the AD9736BBCZ and AD9739ABBCZ available in the same package?
Yes. Both devices are offered in a 160-ball CSP_BGA package. However, identical package type does not imply identical pinout or thermal/electrical equivalence; designers must verify pin assignments and layout against the specific device datasheet.
Can the AD9739ABBCZ be used as a drop-in replacement for the AD9736BBCZ?
No. Due to differences in maximum update rate, data interface architecture, and pin assignments, the AD9739ABBCZ is not a drop-in replacement for the AD9736BBCZ. Any substitution requires schematic, layout, and timing validation against the AD9739ABBCZ datasheet and the target system requirements.
Which device is better suited for higher-bandwidth RF synthesis?
The AD9739ABBCZ is better suited for higher-bandwidth RF synthesis because its maximum update rate of 2.5 GSPS is more than double that of the AD9736BBCZ at 1.2 GSPS. Higher update rates support wider instantaneous bandwidth and higher output frequencies, subject to system clocking and filter design.