Part A
AD9516-4BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1951 Stückzahl
- Package
- LFCSP-64
- Series
- Clock-Timing mit Taktgeneratoren, PLLs, Frequenzsynthesizer
Replacement verdict
Not a drop-in replacement
The AD9513BCPZ and AD9516-4BCPZ are not functionally interchangeable: the AD9513 is a three-output clock distribution IC with fixed divide ratios, while the AD9516-4 is a fully integrated clock generator with an on-chip VCO, four outputs, and programmable dividers. The differences in output count, integrated VCO, programmable division, and package footprint make direct substitution impractical without redesign.
Different output count
Integrated VCO absent
Different divider architecture
Different package footprint
Parts at a glance
Part B
AD9513BCPZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6808 Stückzahl
- Package
- LFCSP-32
- Series
- Clock-Timing, Clock Buffers, Drivers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9513BCPZ | AD9516-4BCPZ | Why it matters |
|---|---|---|---|
| Number of Outputs | 3 (LVPECL/CMOS selectable) | 6 (LVPECL, LVDS, CMOS) | Output count determines how many clock destinations can be driven from a single device, directly affecting fan-out capability and board architecture. |
| Output Logic Types | LVPECL and CMOS | LVPECL, LVDS, and CMOS | Supported logic standards must match the receiving devices; LVDS support in the AD9516-4 adds flexibility for low-power differential interfaces. |
| On-Chip VCO | No (clock distribution only) | Yes (integrated VCO) | An integrated VCO allows the AD9516-4 to generate clocks internally, whereas the AD9513 requires an external clock source, changing system complexity and BOM. |
| Input Frequency Range | Up to 1.6 GHz | Up to 2.4 GHz (VCO/input dependent) | Maximum input frequency limits the reference and clock rates the device can accept, affecting suitability for high-speed applications. |
| Output Frequency Range | Up to 1.6 GHz | Up to 1.6 GHz (LVPECL) | Output frequency capability determines the maximum clock rate deliverable to downstream loads. |
| Divider / Distribution Function | Clock distribution with dividers | Clock generation with PLL, VCO, and dividers | The AD9516-4 combines PLL synthesis with distribution, while the AD9513 is distribution-only, which fundamentally changes functional substitutability. |
| Package | 32-lead LFCSP | 64-lead LFCSP | Package footprint and pin count affect PCB layout, routing, and whether a drop-in replacement is physically possible. |
| Supply Voltage | 3.3 V | 3.3 V | Supply voltage compatibility ensures the device can share the same power rail as surrounding circuitry. |
| Serial Control Interface | SPI-compatible | SPI-compatible | A compatible control interface allows reuse of existing firmware and configuration routines. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9516-4BCPZ | AD9513BCPZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Clock Generator, Fanout Distribution | Fanout Buffer (Distribution), Divider |
| PLL | Yes | - |
| Input | Clock | Clock |
| Output | CMOS, LVDS, LVPECL | CMOS, LVDS |
| Number of Circuits | 1 | 1 |
| Ratio - Input: Output | 1:14 | 1:3 |
| Differential - Input: Output | Yes/Yes | Yes/Yes |
| Frequency - Max | 2.95GHz | 800 MHz |
| Divider / Multiplier | Yes/No | - |
| Voltage - Supply | 3.135V ~ 3.465V | 3.135V ~ 3.465V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the AD9513BCPZ and the AD9516-4BCPZ?
The AD9513BCPZ is a 3-output clock distribution IC with a single input and integrated dividers, offering no on-chip PLL or VCO. The AD9516-4BCPZ is a more highly integrated clock generator that includes an on-chip integer-N PLL, an external VCO input range, and up to 6 outputs with programmable dividers, delay adjustment, and a built-in VCO divider. The AD9516-4 is therefore a clock generation and distribution device, while the AD9513 is a distribution-only device.
Are the AD9513BCPZ and AD9516-4BCPZ pin-compatible or package-compatible?
No. Both devices are offered in a 32-lead LFCSP package, but their pin functions and internal architectures differ significantly. The AD9516-4BCPZ integrates a PLL and VCO-related circuitry that requires additional pins for loop filter, reference input, and charge pump connections, whereas the AD9513BCPZ does not. They are not drop-in replacements for each other.
How do the output configurations of the AD9513BCPZ and AD9516-4BCPZ compare?
The AD9513BCPZ provides 3 outputs (LVPECL and CMOS combinations depending on configuration) with programmable dividers. The AD9516-4BCPZ provides up to 6 outputs, typically configurable as LVPECL, LVDS, or CMOS, each with independent programmable dividers and optional delay adjustment. The AD9516-4 therefore offers greater output count and flexibility.
Does the AD9513BCPZ include an on-chip PLL or VCO?
No. The AD9513BCPZ is a clock distribution device without an integrated PLL or VCO. It accepts an external clock input and distributes divided versions of that clock to its outputs. Applications requiring frequency synthesis or jitter cleanup from a reference must use a device such as the AD9516-4BCPZ, which integrates an integer-N PLL.
What is the role of the on-chip PLL in the AD9516-4BCPZ compared to the AD9513BCPZ?
The AD9516-4BCPZ includes an integer-N PLL that can lock an external VCO or its internal VCO to a reference input, enabling frequency synthesis and jitter attenuation. The AD9513BCPZ has no PLL, so it cannot synthesize new frequencies or clean jitter from a noisy reference; it only divides and distributes an already-clean input clock.
Can the AD9513BCPZ be used as a direct substitute for the AD9516-4BCPZ in an existing design?
No. Because the AD9516-4BCPZ integrates a PLL, VCO interface, and additional outputs with independent delay and divider controls, substituting the AD9513BCPZ would remove clock generation and jitter-cleaning capability and reduce output count. A direct substitution is not possible without redesigning the clock tree and validating all timing, jitter, and interface requirements against the manufacturer datasheets.
Which device is more suitable for applications requiring multiple synchronized outputs with programmable delay?
The AD9516-4BCPZ is more suitable because it provides up to 6 outputs with independent programmable dividers and delay adjustment, plus an integrated PLL for synchronization to a reference. The AD9513BCPZ offers only 3 outputs and lacks the integrated PLL and per-output delay adjustment features of the AD9516-4.