Part A
AD9739ABBCZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3752 PCS
- Package
- BGA-160
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9736BBCRL is a viable functional replacement candidate for the AD9739ABBCZ in many high-speed DAC applications, sharing the same 14-bit resolution, 160-lead BGA package, and 1.8 V/3.3 V supply architecture. However, the AD9739ABBCZ offers a higher maximum update rate (2.5 GSPS versus 1.2 GSPS) and a wider LVDS input data rate, so the replacement is only fully compatible when the target design operates within the AD9736's 1.2 GSPS envelope. Engineers should validate dynamic performance, clocking requirements, and thermal margins before committing to the substitution.
Maximum Update Rate
Validation required
Resolution
High match
Package Type
High match
Supply Voltage
Validation required
Parts at a glance
Part B
AD9736BBCRL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5998 PCS
- Package
- LFBGA-160
- Series
- Acquisition de données - convertisseur numérique - analogique (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 | AD9739ABBCZ | AD9736BBCRL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Both DACs share 14-bit resolution, so quantization noise floor and nominal dynamic range are comparable. |
| Maximum Update Rate | 2500 MSPS | 1200 MSPS | The AD9739ABBCZ supports roughly twice the sample rate, enabling higher output frequencies and wider signal bandwidths. |
| Output Interface | LVDS (dual-port, DDR) | LVDS (dual-port, DDR) | Both use LVDS dual-port DDR input, so the digital interface style is compatible for board-level redesign. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Matching supply rails simplify power-tree reuse when substituting one part for the other. |
| Package | 160-lead LFCSP (12 x 12 mm) | 160-lead LFCSP (12 x 12 mm) | Identical package and footprint allow a drop-in layout change without PCB redesign. |
| Power Consumption | Approx. 1.1 W | Approx. 0.55 W | The AD9736BBCRL dissipates roughly half the power, affecting thermal design and supply sizing. |
| SFDR | Higher SFDR at high output frequencies | Lower SFDR at high output frequencies | Spurious-free dynamic range determines spectral purity in wideband signal synthesis applications. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings mean 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 | AD9736BBCRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Number of Bits | 14 | 14 |
| Number of D/A Converters | 1 | 1 |
| 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 |
| Settling Time | 13µs (Typ) | - |
Frequently asked questions
What are the key differences between the AD9739ABBCZ and the AD9736BBCRL?
The AD9739ABBCZ is a 14-bit, 2.5 GSPS RF digital-to-analog converter, while the AD9736BBCRL is a 14-bit, 1.2 GSPS DAC. Both are members of Analog Devices' TxDAC family and are pin-compatible in the same 160-ball CSP-BGA package, but the AD9739A supports a higher maximum update rate and includes features such as dual-port LVDS data input and a higher-speed serial interface, whereas the AD9736 offers a single-port LVDS interface at a lower maximum sample rate.
Are the AD9739ABBCZ and AD9736BBCRL pin-compatible?
Yes. Both devices are offered in the same 160-ball CSP-BGA (BC) package with a 12 mm × 12 mm body and identical ball assignments for the core DAC, clock, and power supply pins, which allows board-level reuse. However, designers must verify that the differing data input interface and control pin functions are compatible with the target design before substituting one for the other.
What is the maximum update rate of each device?
The AD9739ABBCZ supports a maximum DAC update rate of 2.5 GSPS. The AD9736BBCRL supports a maximum DAC update rate of 1.2 GSPS. The higher update rate of the AD9739A enables wider signal bandwidths and higher intermediate frequency synthesis in the first Nyquist zone.
What data input interface does each DAC use?
The AD9739ABBCZ uses a dual-port LVDS data input interface with a maximum input data rate of 1.25 GSPS per port (2.5 GSPS total with dual-port interleaving). The AD9736BBCRL uses a single-port LVDS data input interface with a maximum input data rate of 1.2 GSPS. The dual-port architecture of the AD9739A allows lower-speed FPGA or ASIC outputs to drive the DAC at its full update rate.
Do both parts have the same resolution and output type?
Yes. Both the AD9739ABBCZ and the AD9736BBCRL are 14-bit current-output DACs with a nominal full-scale output current of 20 mA and a differential current output structure intended for direct interfacing to a transformer or differential amplifier. Both operate from a 1.8 V digital supply and a 3.3 V analog supply.
Can the AD9736BBCRL be used as a drop-in replacement for the AD9739ABBCZ?
Not as a direct drop-in replacement. Although the package and many pin functions are shared, the AD9739ABBCZ supports a 2.5 GSPS update rate and a dual-port LVDS interface, while the AD9736BBCRL is limited to 1.2 GSPS with a single-port LVDS interface. A design targeting the AD9739A's full sample rate or dual-port data path cannot be satisfied by the AD9736 without redesigning the data interface and clocking scheme.
What are the typical applications for each device?
The AD9739ABBCZ is typically used in wideband RF signal synthesis, direct RF upconversion, instrumentation, and broadband communications systems where update rates up to 2.5 GSPS are required. The AD9736BBCRL is typically used in baseband and intermediate-frequency transmit paths, cable modem termination systems, and general-purpose waveform generation where update rates up to 1.2 GSPS are sufficient.
How do the power consumption figures compare?
Both devices are specified with a total power dissipation in the range of approximately 1.1 W to 1.3 W depending on the update rate and output configuration. The AD9739ABBCZ, operating at a higher maximum update rate, dissipates more power at full speed than the AD9736BBCRL. Exact power figures should be taken from the respective Analog Devices datasheets for the specific operating conditions.