Part A
AD9736BBCZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5340 PCS
- Package
- BGA-160
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9739ABBCZRL is a higher-performance member of the same Analog Devices TxDAC family and shares the AD9736BBCZ's 160-lead BGA footprint, 1.8 V/3.3 V supply scheme, and LVDS input interface, making it a viable functional upgrade candidate. However, the higher sample rate, elevated power dissipation, and tighter clock requirements mean the surrounding thermal, clocking, and power-delivery design must be revalidated before substitution.
Package and Pinout
High match
Resolution and Input Interface
High match
Sample Rate and Power Dissipation
Validation required
Clock and Supply Requirements
Validation required
Parts at a glance
Part B
AD9739ABBCZRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8033 PCS
- Package
- LFBGA-160
- Series
- Acquisição de dados - Convertedores digitais para analógicos (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 | AD9739ABBCZRL | Why it matters |
|---|---|---|---|
| Resolution (Bits) | 14 | 14 | Both DACs share 14-bit resolution, so quantization noise floor and reconstruction accuracy are comparable. |
| Maximum Update Rate | 1200 MSPS | 2500 MSPS | The higher update rate of the AD9739A enables wider signal bandwidths and higher intermediate frequencies, which is critical for direct RF synthesis. |
| Output Type | Current (differential) | Current (differential) | Both provide differential current outputs, allowing similar analog front-end interfacing and transformer coupling. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Matching supply rails simplify power-rail design and allow reuse of the same regulator scheme when substituting parts. |
| Digital Interface | LVDS | LVDS | A common LVDS input interface means the same FPGA/ASIC output stage can drive either device without rework. |
| Package | 160-Ball CSPBGA | 160-Ball CSPBGA | Identical package and ballout support drop-in board compatibility, easing functional substitution. |
| Power Consumption (Typical) | 1.1 W | 1.4 W | Higher power dissipation in the AD9739A affects thermal design and may require improved heatsinking or airflow. |
| SFDR (at rated update rate) | ~78 dBc | ~80 dBc | Spurious-free dynamic range determines spectral purity; the AD9739A offers slightly better linearity for demanding RF applications. |
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 | AD9736BBCZ | AD9739ABBCZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| 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, 3.13V ~ 3.47V | 1.7V ~ 1.9V, 3.1V ~ 3.5V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V, 3.13V ~ 3.47V | 1.7V ~ 1.9V, 3.1V ~ 3.5V |
| INL / DNL(LSB) | ±1, ±0.6 | ±2.5, ±2 |
| Architecture | Oversampling Interpolating DAC | Quad-Switch |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9736BBCZ and AD9739ABBCZRL?
The AD9736BBCZ is a 14-bit, 1.2 GSPS RF digital-to-analog converter, while the AD9739ABBCZRL is a 14-bit, 2.5 GSPS RF DAC. The AD9739ABBCZRL offers a higher maximum update rate and is supplied in a 160-ball CSP_BGA package, whereas the AD9736BBCZ is supplied in a 160-lead LFCSP package. Both are members of Analog Devices' TxDAC family and support LVDS input interfaces.
Are the AD9736BBCZ and AD9739ABBCZRL pin-compatible?
No. The AD9736BBCZ uses a 160-lead LFCSP package, while the AD9739ABBCZRL uses a 160-ball CSP_BGA package. The package types, ball/lead assignments, and PCB land patterns differ, so they are not drop-in replacements for each other.
What is the maximum DAC update rate for each device?
The AD9736BBCZ supports a maximum update rate of 1.2 GSPS. The AD9739ABBCZRL supports a maximum update rate of 2.5 GSPS. Designs requiring higher signal bandwidth should account for this difference when selecting between the two.
Do both devices offer the same resolution and input interface?
Yes. Both the AD9736BBCZ and AD9739ABBCZRL are 14-bit DACs with a dual-port LVDS input data interface. The primary differentiators are the maximum update rate and the package type rather than resolution or interface type.
Can the AD9739ABBCZRL be used as a higher-speed upgrade to the AD9736BBCZ?
Functionally it offers a higher maximum update rate (2.5 GSPS versus 1.2 GSPS), but it is not a drop-in upgrade because the package and pinout differ. A redesign of the PCB land pattern and validation of the LVDS interface timing, clocking, and output network against the AD9739ABBCZRL datasheet would be required.
What are the typical applications for these RF DACs?
Both devices are intended for high-speed signal synthesis applications such as wireless infrastructure transmitters, broadband communications, instrumentation, and radar or defense systems where high dynamic range and wide bandwidth are required. The AD9739ABBCZRL's higher update rate supports wider instantaneous bandwidth requirements.
What package options are available for each part?
The AD9736BBCZ is offered in a 160-lead LFCSP package. The AD9739ABBCZRL is offered in a 160-ball CSP_BGA package. The "RL" suffix on AD9739ABBCZRL indicates tape-and-reel packaging.