Part A
AD9739BBCZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4950 PCS
- Package
- BGA-160
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9739ABBCZRL is a functionally compatible replacement candidate for the AD9739BBCZ, sharing the same 14-bit 2.5 GSPS RF DAC core, 160-lead CSPBGA package, and industrial temperature range. The principal distinction is the speed grade, with the AD9739BBCZ rated for 2500 MSPS and the AD9739ABBCZRL rated for 2100 MSPS, so the A-grade device may be used in place of the B-grade only where the system clock does not exceed the lower maximum update rate. Designers should confirm the DAC sample rate margin and verify dynamic performance at the target frequency before adopting the substitution in production.
Maximum Update Rate
Validation required
Resolution
High match
Package Type
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD9739ABBCZRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8033 PCS
- Package
- LFBGA-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 | AD9739BBCZ | AD9739ABBCZRL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Determines the quantization accuracy of the DAC output; identical resolution means equivalent signal fidelity potential. |
| Number of DAC Channels | 1 | 1 | Both are single-channel DACs, so channel count does not differentiate them for substitution. |
| Maximum Update Rate | 2.5 GSPS | 2.5 GSPS | Sets the maximum sampling/update frequency; matching rates ensure equivalent high-speed synthesis capability. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Defines the analog output interface; identical output type means the same external output network can be used. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Confirms power rail compatibility; matching rails allow drop-in replacement without power redesign. |
| Interface | LVDS, SPI | LVDS, SPI | Determines digital input and control compatibility; identical interfaces support the same host FPGA/controller. |
| Package / Case | 160-LFBGA, CSPBGA | 160-LFBGA, CSPBGA | Same package and footprint enable direct PCB substitution without layout changes. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Matching temperature ratings ensure equivalent environmental robustness for the target application. |
| Packaging / Ordering Format | Tray | Tape & Reel (RL) | The RL suffix indicates tape-and-reel packaging for automated assembly, while the non-RL part is tray; this affects manufacturing handling but not device function. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9739BBCZ | 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 | 13ns (Typ) | 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, 3.1V ~ 3.5V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V, 3.1V ~ 3.5V | 1.7V ~ 1.9V, 3.1V ~ 3.5V |
| INL / DNL(LSB) | ±1.3, ±0.8 | ±2.5, ±2 |
| Architecture | Quad-Switch | Quad-Switch |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9739BBCZ and AD9739ABBCZRL?
Both are 14-bit, 2.5 GSPS RF digital-to-analog converters from Analog Devices in a 160-ball CSP-BGA package. The AD9739BBCZ is the standard production ordering code, while the AD9739ABBCZRL is the tape-and-reel variant of the same AD9739A device. The core silicon, specifications, and package are identical; the difference is packaging format for automated assembly.
Are the AD9739BBCZ and AD9739ABBCZRL electrically and functionally interchangeable?
Yes. Both ordering codes refer to the same AD9739A converter die with identical 14-bit resolution, 2.5 GSPS maximum update rate, and 160-ball CSP-BGA pinout. They differ only in delivery format (tray vs. tape-and-reel), so they are functionally interchangeable in a validated design.
What is the difference between the AD9739A and the AD9739 (non-A) devices?
The AD9739A is a higher-speed grade of the AD9739 family specified for a 2.5 GSPS maximum update rate, whereas the standard AD9739 is specified for a lower maximum update rate. Designers should confirm the exact grade against the official Analog Devices datasheet before selecting an ordering code.
What package and pinout do the AD9739BBCZ and AD9739ABBCZRL use?
Both use a 160-ball CSP-BGA package. Because they are the same device, the ball assignments and PCB land pattern are identical, allowing either ordering code to be used on the same footprint.
What is the difference between the "BBCZ" and "ABBCZRL" suffixes?
The "BBCZ" suffix denotes the standard tray-packaged, RoHS-compliant industrial-grade part. The "ABBCZRL" suffix denotes the AD9739A grade supplied in tape-and-reel format ("RL") for pick-and-place assembly. Both are RoHS-compliant and share the same temperature grade.
Which ordering code should be used for high-volume automated assembly?
The AD9739ABBCZRL tape-and-reel variant is intended for automated pick-and-place production lines, while the AD9739BBCZ tray format is typically used for prototyping or low-volume builds. Selection should be based on the assembly process rather than electrical differences.
Do both parts support the same digital interface and clocking?
Yes. Since both ordering codes refer to the same AD9739A device, they share the identical dual-port LVDS digital input interface, DAC clock input, and on-chip control registers described in the Analog Devices datasheet. No interface differences exist between the two ordering codes.