Part A
AD9739BBC
ADI公司
- Lifecycle
- Active
- Stock
- 8747 件
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Compatible functional replacement candidate
The AD9739ABBCZ and AD9739BBC are functionally equivalent 14-bit, 2.5 GSPS RF digital-to-analog converters sharing the same core die, resolution, sample rate, and 160-lead CSP-BGA package. The AD9739ABBCZ is the RoHS-compliant lead-free variant while the AD9739BBC is the non-RoHS leaded version, so the two are interchangeable for functional purposes with the primary distinction being environmental compliance and solder process compatibility.
Resolution and Sample Rate
High match
Package and Pinout
High match
Supply and Interface
High match
RoHS Compliance
Validation required
Parts at a glance
Part B
AD9739ABBCZ
ADI公司
- Lifecycle
- Active
- Stock
- 3752 件
- Package
- BGA-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 | AD9739BBC | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Determines the quantization accuracy of the DAC output; identical resolution means equivalent signal-to-noise performance potential. |
| Number of DAC Channels | 1 | 1 | Confirms both are single-channel DACs, so the channel architecture is functionally interchangeable. |
| Maximum Update Rate | 2.5 GSPS | 2.5 GSPS | Sets the maximum sample rate for high-speed signal synthesis; matching rates ensure equivalent bandwidth capability. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Defines the interface to the analog front end; identical output type allows the same external output network to be reused. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Determines power rail requirements; matching voltages mean the same power supply design can be used. |
| Interface Type | LVDS, SPI | LVDS, SPI | Defines the digital input and control interface; identical interfaces ensure drop-in compatibility with the host FPGA/controller. |
| Package / Case | 160-LFBGA, CSPBGA | 160-LFBGA, CSPBGA | Determines PCB footprint and assembly; identical package allows the same board layout to be used. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Defines the environmental operating envelope; matching ranges ensure equivalent reliability in the target application. |
| Product Grade / Screening | Automotive grade (AEC-Q100 qualified) | Industrial grade | The A suffix indicates automotive qualification with stricter screening; this affects suitability for automotive vs. general industrial use. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9739BBC | AD9739ABBCZ |
|---|---|---|
| Part Status | Discontinued at DigiKey | Active |
| Base Product Number | AD9739 | - |
| Number of Bits | 14 | 14 |
| Number of D / A Converters | 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 | - |
| Architecture | Quad-Switch | Quad-Switch |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | - |
| Packaging | Tray | - |
| Number of D/A Converters | - | 1 |
| INL / DNL(LSB) | - | ±2.5, ±2 |
Frequently asked questions
What are the key differences between the AD9739ABBCZ and the AD9739BBC?
Both parts are 14-bit, 2.5 GSPS RF digital-to-analog converters from Analog Devices in a 160-ball CSP_BGA package. The AD9739ABBCZ is the RoHS-compliant, lead-free (Pb-free) version, while the AD9739BBC is the non-RoHS lead-containing version. The core die and functional specifications are otherwise the same.
Are the AD9739ABBCZ and AD9739BBC functionally interchangeable?
Yes. Both devices share the same 14-bit resolution, up to 2.5 GSPS update rate, dual-port LVDS input interface, and on-chip 14-bit DAC core. The difference is package/plating compliance (Pb-free vs. leaded), not electrical function, so they are interchangeable in terms of signal-chain performance when the assembly process allows the respective finish.
What is the resolution and maximum update rate of these DACs?
Both the AD9739ABBCZ and AD9739BBC are 14-bit DACs with a maximum update rate of 2.5 GSPS, targeting wideband RF signal synthesis and direct RF conversion applications.
What package do the AD9739ABBCZ and AD9739BBC use?
Both devices are supplied in a 160-ball CSP_BGA package. The package outline and ball assignments are identical between the two orderable part numbers; only the ball finish/plating differs (Pb-free for the ABBCZ, leaded for the BBC).
Does the AD9739ABBCZ meet RoHS requirements while the AD9739BBC does not?
Correct. The AD9739ABBCZ is the RoHS-compliant, Pb-free orderable variant, whereas the AD9739BBC is the non-RoHS, lead-containing variant. Designers subject to RoHS or lead-free assembly requirements should select the AD9739ABBCZ.
What digital input interface do these DACs use?
Both parts use a dual-port LVDS input interface to accept 14-bit data at the DAC update rate, with on-chip digital features including a digital datapath for interpolation and a serial peripheral interface for configuration.
Can the AD9739BBC be used as a drop-in replacement for the AD9739ABBCZ on an existing PCB?
Electrically and mechanically yes, since both share the same 160-ball CSP_BGA footprint and pinout. However, the substitution changes the assembly finish from Pb-free to leaded, so it should only be done where the soldering process and RoHS compliance of the final product permit a leaded component.