Part A
AD9739BBCZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4950 Stückzahl
- Package
- BGA-160
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9736BBCRL is a functionally compatible replacement candidate for the AD9739BBCZ, sharing the same 14-bit DAC resolution, 160-lead CSPBGA footprint, and LVDS input interface, but it requires validation of the maximum update rate and power consumption before substitution in high-speed designs.
Resolution
Validation required
Maximum Update Rate
Not compatible
Package Type
High match
Power Consumption
Validation required
Parts at a glance
Part B
AD9736BBCRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5998 Stückzahl
- Package
- LFBGA-160
- Series
- Data Acquisition von 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 | AD9739BBCZ | AD9736BBCRL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Both DACs share the same 14-bit resolution, so quantization noise floor and dynamic range are comparable. |
| Maximum Update Rate | 2500 MSPS | 1200 MSPS | The AD9739 supports roughly double the sample rate, enabling wider signal bandwidths and higher intermediate frequencies. |
| Output Interface | Dual-port LVDS (DDR) | LVDS | Interface type and data rate determine the digital source and clocking scheme required to drive the DAC. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Matching supply rails allow reuse of the same power architecture and decoupling design. |
| Package | 160-ball CSP-BGA | 160-ball CSP-BGA | Identical package and footprint permit a drop-in layout change without PCB redesign. |
| Power Consumption | Approx. 1.1 W | Approx. 0.55 W | Lower power in the AD9736 reduces thermal load and may simplify cooling in dense designs. |
| SFDR | Higher SFDR at high fOUT | Lower SFDR at high fOUT | Spurious-free dynamic range affects spectral purity and suitability for wideband signal synthesis. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same industrial temperature range supports use in identical environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9739BBCZ | 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) | ±1.3, ±0.8 | ±1, ±0.6 |
| Architecture | Quad-Switch | Oversampling Interpolating DAC |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Settling Time | 13ns (Typ) | - |
Frequently asked questions
What are the key differences between the AD9739BBCZ and AD9736BBCRL?
The AD9739BBCZ is a 14-bit, 2.5 GSPS RF digital-to-analog converter, while the AD9736BBCRL is a 14-bit, 1.2 GSPS DAC. The AD9739BBCZ offers a higher maximum update rate and is specified for RF applications up to 1.0 GHz, whereas the AD9736BBCRL targets lower-frequency applications with an update rate of 1.2 GSPS. Both are members of Analog Devices' TxDAC family and are packaged in a 160-ball CSP_BGA.
Are the AD9739BBCZ and AD9736BBCRL pin-compatible?
Both devices are offered in the same 160-ball CSP_BGA package (BC-160-1), and Analog Devices documents them as pin-compatible within the AD973x family. However, designers should verify the specific pin functions and supply requirements against the respective datasheets before substituting one for the other in an existing layout.
What is the maximum DAC update rate for each device?
The AD9739BBCZ supports a maximum update rate of 2.5 GSPS. The AD9736BBCRL supports a maximum update rate of 1.2 GSPS. Both are 14-bit resolution DACs.
Do both parts support the same digital input interface?
Both devices use a dual-port LVDS data input interface with a DDR (double data rate) format. The AD9739BBCZ additionally supports a 2x/4x/8x interpolation filter and a digital quadrature modulator for RF synthesis, while the AD9736BBCRL provides a 2x/4x/8x interpolation filter without the quadrature modulator. Designers should confirm the specific interface configuration in each datasheet.
What are the typical power consumption figures for these DACs?
Per Analog Devices datasheets, the AD9739BBCZ typically dissipates approximately 1.1 W at 2.5 GSPS with nominal supplies. The AD9736BBCRL typically dissipates approximately 0.5 W at 1.2 GSPS. Actual power depends on update rate, supply voltages, and output configuration.
Can the AD9736BBCRL be used as a drop-in replacement for the AD9739BBCZ?
No. Although both are 14-bit DACs in the same 160-ball CSP_BGA package, the AD9736BBCRL has a lower maximum update rate (1.2 GSPS vs. 2.5 GSPS) and lacks the on-chip quadrature modulator found in the AD9739BBCZ. A drop-in replacement is not supported without validating clocking, interface timing, and RF output requirements against the target design.
What are the typical applications for each device?
The AD9739BBCZ is intended for high-speed RF applications such as broadband cable infrastructure, wireless base stations, and instrumentation requiring update rates up to 2.5 GSPS. The AD9736BBCRL targets applications such as wireless infrastructure, cable modem termination systems, and general-purpose high-speed DAC applications operating up to 1.2 GSPS.