Analog Devices Inc. AD9680BCPZ-1000

Overview

AD9680BCPZ-1000 from Analog Devices is a dual-channel, 14-bit, 1 GSPS analog-to-digital converter with JESD204B Subclass 1 serial output, integrated digital downconverters (DDCs), and 2 GHz full-power analog input bandwidth. It delivers 65.3 dBFS SNR at 340 MHz input and 85 dBFS SFDR at same frequency, supporting IF sampling in multiband communications receivers.

For engineers reviewing the AD9680BCPZ-1000 datasheet, AD9680BCPZ-1000 pinout, AD9680BCPZ-1000 application, or AD9680BCPZ-1000 equivalent, key selection criteria include deterministic latency support via SYSREF±, programmable input termination (50–400 Ω), dual DDCs with 12-bit NCOs, fast overrange detection, and 9 mm × 9 mm LFCSP packaging for high-density RF front-end designs.

Technical Context

The AD9680BCPZ-1000 implements two independent pipelined ADC cores with on-chip sample-and-hold and buffered differential inputs. Each channel feeds into a dedicated DDC comprising a 12-bit numerically controlled oscillator (NCO) and up to four half-band decimation filters - configurable for multiband signal processing without external FPGA resources.

JESD204B Subclass 1 serialization supports 1-, 2-, or 4-lane configurations with deterministic latency alignment across multiple devices using SYSREF± and SYNCINB±. Clock input accepts differential signals with integer divide-by-1/2/4/8, enabling flexible synchronization with RF synthesizers or clock generators in wideband receiver systems.

Key Specifications

Pinout & Package

AD9680BCPZ-1000 is housed in a 64-lead, 9 mm × 9 mm, Pb-free LFCSP package with exposed thermal pad (EP). The package supports reflow soldering and provides low-inductance ground paths for high-speed analog and digital signal integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, high-speed ADC applications.

Compared with AD9695BCPZ-1300 and ADS54J60IRGCT, the AD9680BCPZ-1000 uniquely combines 1 GSPS sampling, dual DDCs, and JESD204B Subclass 1 in a single package - reducing FPGA logic utilization, eliminating external clock distribution complexity, and enabling deterministic latency for time-critical RF systems.

Availability

AD9680BCPZ-1000 is available at Aetrix Electronics and suitable for communications infrastructure, radar signal processing, and instrumentation requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for AD9680BCPZ-1000 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD9680 product line targets wideband RF receivers demanding high dynamic range, low latency, and integrated digital signal conditioning - specifically engineered for 3G/4G/5G infrastructure, defense radar, and test equipment.

FAQ

What is the maximum analog input frequency supported by the AD9680BCPZ-1000?

The AD9680BCPZ-1000 supports a usable analog input full-power bandwidth of 2 GHz, enabling direct sampling of RF signals in L-, S-, and C-bands without downconversion. This specification is verified under standard operating conditions (TA = 25°C, AVDD1 = 1.25 V, AVDD2 = 2.5 V, AVDD3 = 3.3 V) and applies to both channels independently. The 2 GHz bandwidth is maintained across the full industrial temperature range (−40°C to +85°C) per the Rev. E datasheet specifications.

Does the AD9680BCPZ-1000 support deterministic latency, and how is it implemented?

Yes, the AD9680BCPZ-1000 supports deterministic latency through JESD204B Subclass 1 compliance. It uses SYSREF± and SYNCINB± pins to align internal framing clocks and serializer states across multiple devices. Latency is fixed and repeatable after initial link establishment, with total end-to-end latency calculable from documented pipeline stages including ADC core, DDC, and serializer. This capability is essential for phased-array radar and MIMO communications where inter-device timing coherence is mandatory.

What are the input voltage range options for the AD9680BCPZ-1000, and how are they configured?

The AD9680BCPZ-1000 has a nominal differential input range of 1.70 V p-p, adjustable between 1.46 V p-p and 1.94 V p-p via SPI register programming. Range selection is achieved by configuring internal input buffer gain and termination settings - no external resistor changes are required. This flexibility allows optimization for different front-end filter insertion loss and amplifier output swing, maintaining optimal SNR across varying signal chain architectures.

How many JESD204B lanes does the AD9680BCPZ-1000 support, and what are the lane rate constraints?

The AD9680BCPZ-1000 supports 1-, 2-, or 4-lane JESD204B Subclass 1 configurations. Lane rates depend on DDC decimation and output sample rate: at full 1 GSPS with DDC bypassed and L=4, typical lane rate is ~5 Gbps. Maximum lane rate is 12.5 Gbps; L=2 mode is not supported at 1 GSPS due to exceeding this limit. Configuration is fully programmable via SPI, and lane count affects FPGA resource allocation and PCB routing density.

Is an external voltage reference required for the AD9680BCPZ-1000?

No, the AD9680BCPZ-1000 includes an internal 1.0 V voltage reference, eliminating the need for external reference components. This reference is used for ADC core biasing and is specified to drift less than ±15 ppm/°C over temperature. While the internal reference is sufficient for most applications, the device also supports optional external reference input via the VREF pin for systems requiring tighter DC accuracy or custom scaling.