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 AD9734BBCZ is a viable functional substitute for the AD9736BBCZ in many designs, sharing the same package, pinout, supply architecture, and temperature range, but it delivers lower resolution and reduced update rate, so the substitution must be validated against the target application's dynamic performance and bandwidth requirements.
Resolution
Validation required
Update Rate
Validation required
Package Type
High match
Operating Temperature
High match
Parts at a glance
Part B
AD9734BBCZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 43 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 | AD9734BBCZ | 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 maximum sample rate determines the highest signal bandwidth the DAC can synthesize. |
| Number of DAC Channels | 1 | 1 | Channel count defines how many independent analog outputs are available in a single package. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Output architecture determines the external interface circuitry required to convert the DAC output to a usable voltage signal. |
| Supply Voltage | 1.8 V, 3.3 V | 1.8 V, 3.3 V | Supply requirements affect power design and compatibility with surrounding digital and analog circuitry. |
| Package / Case | 160-LFBGA, CSPBGA | 160-LFBGA, CSPBGA | Package and footprint determine PCB layout compatibility and whether parts are physically interchangeable. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | The temperature range indicates the environments in which the device can reliably operate. |
| Interface | Parallel, LVDS | Parallel, LVDS | The digital input interface must match the driving logic to ensure correct data transfer and timing. |
| Mounting Type | Surface Mount | Surface Mount | Mounting type determines the assembly process and board design constraints. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9736BBCZ | AD9734BBCZ |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,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 AD9734BBCZ?
The AD9736BBCZ is a 14-bit, 1.2 GSPS RF DAC, while the AD9734BBCZ is a 10-bit, 1.2 GSPS RF DAC. Both are pin-compatible members of the AD973x family in a 160-ball CSP_BGA package and share the same 1.8 V/3.3 V supply scheme and LVDS input interface, but they differ in resolution and therefore in dynamic performance specifications such as SNR and SFDR.
Are the AD9736BBCZ and AD9734BBCZ pin-compatible?
Yes. Both devices are offered in the same 160-ball CSP_BGA (BC-160-1) package with an identical pinout, which allows a common PCB footprint. However, because resolution differs (14-bit vs 10-bit), the user must verify that the lower-resolution AD9734BBCZ meets the system's dynamic range requirements before substituting it for the AD9736BBCZ.
What is the maximum update rate of the AD9736BBCZ and AD9734BBCZ?
Both the AD9736BBCZ and AD9734BBCZ are specified for a maximum DAC update rate of 1.2 GSPS (1200 MSPS), making them suitable for high-speed synthesis, broadband communications, and instrumentation applications.
What resolution does each device provide?
The AD9736BBCZ provides 14-bit resolution, whereas the AD9734BBCZ provides 10-bit resolution. The higher resolution of the AD9736BBCZ yields lower quantization noise and better SNR/SFDR performance, which is important in wideband signal synthesis where spurious content must be minimized.
Do the AD9736BBCZ and AD9734BBCZ use the same digital input interface?
Yes. Both devices use a dual-port LVDS data input interface with the same timing and control architecture, including the same serial peripheral (SPI) control port for configuration. This common interface simplifies migration between the two resolution grades within a single design.
What are the power supply requirements for the AD9736BBCZ and AD9734BBCZ?
Both devices operate from a 1.8 V digital supply and a 3.3 V analog supply, with a separate 1.8 V clock supply, consistent with the AD973x family datasheet. Designers should consult the official Analog Devices datasheet for exact current consumption and decoupling requirements, as power dissipation differs slightly with resolution and update rate.
Can the AD9734BBCZ be used as a drop-in replacement for the AD9736BBCZ?
Physically it can be placed on the same footprint because the package and pinout are identical, but it is not a functional drop-in replacement in terms of performance. The AD9734BBCZ offers only 10-bit resolution versus 14-bit on the AD9736BBCZ, so the system's SNR, SFDR, and effective number of bits (ENOB) requirements must be re-evaluated against the datasheet before substitution.
Which device should be selected for applications requiring higher dynamic range?
The AD9736BBCZ should be selected when higher dynamic range is required, because its 14-bit resolution provides finer quantization and typically better SNR and SFDR than the 10-bit AD9734BBCZ at the same 1.2 GSPS update rate. The AD9734BBCZ is appropriate where 10-bit resolution is sufficient and reduced digital interface width or cost is advantageous.