Part A
AD9736BBCZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5340 PCS
- Package
- BGA-160
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9734BBCZRL is a viable functional replacement candidate for the AD9736BBCZ in many designs, as both are pin-compatible 10-bit/14-bit TxDAC+ devices in the same 160-lead CSP-BGA package with identical supply and interface architectures. The primary differentiator is resolution and dynamic performance, so the substitution should be validated against the target application's ENOB, SFDR, and update-rate requirements before production release.
Resolution
Validation required
Package Type
High match
Supply Voltage
High match
Dynamic Performance
Validation required
Parts at a glance
Part B
AD9734BBCZRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2852 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 | AD9736BBCZ | AD9734BBCZRL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 10 bit | Higher resolution provides finer output quantization and lower quantization noise, directly affecting signal fidelity in DAC applications. |
| Maximum Update Rate | 1200 MSPS | 1200 MSPS | The update rate determines the maximum synthesizable output frequency and bandwidth of the DAC. |
| Number of DAC Channels | 1 | 1 | Channel count determines how many independent analog outputs the device can drive. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Output type affects the external interface circuitry required to convert the DAC output to a usable voltage signal. |
| Data Interface | Parallel, LVDS | Parallel, LVDS | The data interface must match the digital source to ensure proper timing and signal integrity of the input data stream. |
| Supply Voltage | 1.8V, 3.3V | 1.8V, 3.3V | Supply voltage compatibility determines whether the part can be used in a given power rail architecture without level shifting. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | The temperature range defines the environments in which the component can reliably operate. |
| Package / Case | 160-LFBGA, CSPBGA | 160-LFBGA, CSPBGA | Package compatibility affects PCB footprint and assembly, which is critical for drop-in substitutability. |
| Mounting Type | Surface Mount | Surface Mount | Mounting type must match the board assembly process and available footprint. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9736BBCZ | 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, 3.13V ~ 3.47V | 1.7V ~ 1.9V, 3.13V ~ 3.47V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V, 3.13V ~ 3.47V | 1.7V ~ 1.9V, 3.13V ~ 3.47V |
| INL / DNL(LSB) | ±1, ±0.6 | ±0.12, ±0.06 |
| Architecture | Oversampling Interpolating DAC | Oversampling Interpolating DAC |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD9736BBCZ and AD9734BBCZRL?
The AD9736BBCZ is a 14-bit, 1.2 GSPS RF digital-to-analog converter, while the AD9734BBCZRL is a 10-bit, 1.2 GSPS RF DAC. Both are members of the Analog Devices AD973x family and share the same 160-lead CSP_BGA package and 1.2 GSPS update rate, but they differ in resolution (14-bit vs 10-bit) and therefore in dynamic performance specifications such as SNR and SFDR.
Are the AD9736BBCZ and AD9734BBCZRL pin-compatible?
Yes. Both devices are offered in the same 160-lead CSP_BGA package (the "BBCZ" suffix denotes the BGA package, RoHS-compliant). Because they belong to the same AD973x family and share the same package and pinout, they are pin-compatible, though the reduced resolution of the AD9734BBCZRL means lower-order data input bits are not used.
What is the maximum update rate of these DACs?
Both the AD9736BBCZ and AD9734BBCZRL support a maximum DAC update rate of 1.2 GSPS (1.2 gigasamples per second), enabling direct RF synthesis at high intermediate frequencies.
What is the resolution difference and how does it affect performance?
The AD9736BBCZ provides 14-bit resolution, while the AD9734BBCZRL provides 10-bit resolution. The higher resolution of the AD9736BBCZ yields better signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR), making it preferable for applications requiring wide dynamic range, whereas the 10-bit AD9734BBCZRL is suited to applications where lower resolution is acceptable.
Do both parts use the same digital input interface?
Yes. Both devices use a dual-port LVDS digital input interface with a maximum input data rate of 1.2 GSPS, consistent with the AD973x family architecture. The AD9734BBCZRL, being 10-bit, uses fewer LVDS data input pairs than the 14-bit AD9736BBCZ.
What is the difference between the BBCZ and BBCZRL ordering suffixes?
The "BBCZ" suffix indicates the 160-lead CSP_BGA package in RoHS-compliant form. The "RL" suffix on AD9734BBCZRL denotes tape-and-reel packaging for automated assembly. Both suffixes refer to the same package type and RoHS compliance; the difference is packaging format for shipment.
Can the AD9734BBCZRL be used as a drop-in replacement for the AD9736BBCZ?
Because they are pin-compatible and share the same package and interface, the AD9734BBCZRL can be placed on a board designed for the AD9736BBCZ. However, it is not a functional drop-in replacement: the reduced 10-bit resolution lowers SNR and SFDR, so the design must be validated against its dynamic performance requirements before substitution.
What are typical applications for these RF DACs?
Both the AD9736BBCZ and AD9734BBCZRL are intended for direct RF synthesis applications such as broadband communications transmitters, cable modem termination systems (CMTS), radar and instrumentation, and other systems requiring high-speed DACs operating at up to 1.2 GSPS.