Part A
AD9739ABBCZ
ADI公司
- Lifecycle
- Active
- Stock
- 3752 件
- Package
- BGA-160
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Compatible functional replacement candidate
The AD9734BBCZRL is a viable functional replacement candidate for the AD9739ABBCZ in many high-speed DAC applications, sharing the same 160-lead BGA footprint, 14-bit resolution, and LVDS input interface. However, designers must validate the lower maximum update rate (1.2 GSPS versus 2.5 GSPS) and reduced dynamic performance against system requirements before committing to a drop-in substitution.
Maximum Update Rate
Validation required
Resolution
High match
Package Type
High match
Dynamic Performance
Validation required
Parts at a glance
Part B
AD9734BBCZRL
ADI公司
- Lifecycle
- Active
- Stock
- 2852 件
- Package
- LFBGA-160
- Series
- 資料獲取-數模轉換器（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 | AD9734BBCZRL | Why it matters |
|---|---|---|---|
| Resolution (DAC Bits) | 14 bit | 10 bit | Higher resolution provides finer output quantization and lower quantization noise, directly affecting achievable signal fidelity and SFDR in the target application. |
| Maximum Update Rate | 2500 MSPS | 1200 MSPS | The maximum DAC clock rate determines the highest synthesizable output frequency and the width of the usable Nyquist band for direct RF generation. |
| Output Type | Current-steering (differential) | Current-steering (differential) | Both use current-steering outputs, but the interface and full-scale current range differ, affecting the analog front-end and termination design. |
| Digital Input Interface | Dual-port LVDS, DDR | LVDS, DDR | The input bus width and data rate per pin dictate the FPGA/ASIC interface complexity and the maximum sample rate that can be sustained. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rails must match the board power architecture; both share similar rails but current consumption and internal biasing differ. |
| Package | 160-ball CSP-BGA | 160-ball CSP-BGA | Package footprint and ballout compatibility determine whether a drop-in replacement is possible on an existing PCB. |
| Power Consumption (typical) | ~1.1 W | ~0.6 W | Thermal budget and power-supply sizing depend on dissipation; the higher-rate device consumes substantially more power. |
| SFDR (at rated update rate) | ~80 dBc | ~75 dBc | Spurious-free dynamic range governs spectral purity and determines suitability for demanding communications and instrumentation signal chains. |
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 | AD9734BBCZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Number of Bits | 14 | 10 |
| 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 | ±0.12, ±0.06 |
| 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 AD9734BBCZRL?
The AD9739ABBCZ is a 14-bit, 2.5 GSPS RF digital-to-analog converter, while the AD9734BBCZRL is a 10-bit, 1.2 GSPS RF DAC. The AD9739 offers higher resolution and a faster maximum update rate, whereas the AD9734 provides lower resolution and speed in the same 160-lead CSP-BGA package family.
Do the AD9739ABBCZ and AD9734BBCZRL use the same package and pinout?
Both devices are offered in a 160-ball CSP-BGA package. However, designers must verify pin function assignments and layout against the respective datasheets, as the two parts are different converter families and are not documented as pin-compatible drop-in replacements.
What is the maximum DAC update rate for each device?
The AD9739ABBCZ supports a maximum update rate of 2.5 GSPS, while the AD9734BBCZRL supports a maximum update rate of 1.2 GSPS, per Analog Devices datasheet specifications.
What resolution does each DAC provide?
The AD9739ABBCZ provides 14-bit resolution, and the AD9734BBCZRL provides 10-bit resolution. The higher resolution of the AD9739 generally supports better dynamic range and lower quantization noise in wideband signal synthesis.
Are these parts drop-in replacements for each other?
No. Because the AD9739ABBCZ and AD9734BBCZRL differ in resolution, maximum update rate, and internal architecture, they should not be treated as direct substitutes. Any replacement requires validation of digital interface timing, clocking, output network, and PCB layout against the target device datasheet.
What digital input interface do these DACs use?
Both the AD9739ABBCZ and AD9734BBCZRL use a dual-port LVDS digital input interface, as specified in their Analog Devices datasheets. System designers should confirm data rate, bit width, and timing requirements for each part before interfacing.
What are typical applications for the AD9739ABBCZ versus the AD9734BBCZRL?
The AD9739ABBCZ is typically used in wideband communications, instrumentation, and radar systems requiring high resolution at up to 2.5 GSPS. The AD9734BBCZRL is suited to applications needing a 10-bit, 1.2 GSPS DAC where lower resolution and speed are acceptable, such as certain broadband transmit and test equipment designs.