Analog Devices Inc. LTC2000ACY-11#PBF

Overview

LTC2000ACY-11#PBF from Analog Devices (formerly Linear Technology) is an 11-bit, 2.7 Gsps current-steering DAC optimized for high-frequency direct RF synthesis and broadband instrumentation. It delivers 40 mA full-scale output current into ±1 V compliance range, achieves 75 dBc SFDR at 500 MHz f_OUT, and operates with dual-port DDR LVDS interface up to 1.35 Gbps. Its low latency (11 cycles in dual-port mode) supports real-time waveform generation in radar and DOCSIS CMTS systems.

For engineers reviewing the LTC2000ACY-11#PBF datasheet, LTC2000ACY-11#PBF pinout, LTC2000ACY-11#PBF application, or LTC2000ACY-11#PBF equivalent, key selection criteria include its 11-bit resolution at 2.7 Gsps, 170-lead BGA package thermal performance (θ_JCbottom = 3°C/W), LVDS timing skew tolerance (±570 ps setup/hold), and configurable full-scale current (10–60 mA).

Technical Context

The LTC2000ACY-11#PBF implements a segmented current-source architecture with internal 50 Ω termination on IOUTP/N outputs and supports both single-port (1.35 Gsps) and dual-port (2.7 Gsps) DDR LVDS data interfaces synchronized to a 675 MHz DDR clock. Its DAC sample clock (CKP/N) accepts differential inputs from 50 MHz to 2.7 GHz, and an integrated clock synchronizer aligns incoming LVDS data automatically to the sampling edge.

It features programmable linearization (LIN_DIS/LIN_GN registers), junction temperature sensing via SPI, and pattern generation for system validation. Power delivery uses separate 1.86 V analog/digital supplies (AVDD18/DVDD18) and 3.3 V supplies (AVDD33/DVDD33), with total dissipation of 2.41 W at full 2.7 Gsps operation.

Key Specifications

Pinout & Package

170-lead BGA package (9 mm × 15 mm × 1.54 mm), RoHS-compliant SAC305 ball finish, MSL Level 3. Thermal design leverages low θ_JCbottom = 3°C/W for efficient heat transfer to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed DAC applications.

Compared with AD9162BCPZ and MAX5878ETX+, the LTC2000ACY-11#PBF offers the lowest system integration overhead for FPGA-based LVDS interfacing, built-in clock/data alignment, and thermal-aware operation-making it ideal for space-constrained DOCSIS and instrumentation platforms where deterministic latency and ease of timing closure are prioritized over raw resolution or speed.

Availability

LTC2000ACY-11#PBF is available at Aetrix Electronics and suitable for DOCSIS CMTS, radar subsystems, and high-speed instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LTC2000ACY-11#PBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, communications, automotive, and aerospace markets.

The LTC2000A family was designed specifically for direct RF synthesis and wideband signal generation applications demanding exceptional spectral purity, low latency, and robust LVDS interfacing-targeting next-generation cable infrastructure and defense electronics.

FAQ

What is the maximum operating temperature range for the LTC2000ACY-11#PBF?

The LTC2000ACY-11#PBF is rated for commercial temperature operation from 0°C to 70°C. Its absolute maximum junction temperature is 125°C, and thermal resistance from junction to board (θ_JCbottom) is 3°C/W-enabling reliable operation under sustained 2.41 W power dissipation when mounted on a 4-layer PCB with adequate copper pour.

Does the LTC2000ACY-11#PBF support single-port and dual-port LVDS modes simultaneously?

No, the LTC2000ACY-11#PBF operates exclusively in either single-port (1.35 Gsps) or dual-port (2.7 Gsps) mode, selected at power-up via the DCKI_Q pin. Both modes use the same LVDS physical layer but differ in data lane assignment and clock alignment logic; simultaneous operation is not supported by the LTC2000ACY-11#PBF architecture.

How is full-scale output current adjusted on the LTC2000ACY-11#PBF?

The LTC2000ACY-11#PBF uses the FSADJ pin to set full-scale current from 10 mA to 60 mA via an external resistor divider referenced to AVDD33. A 500 Ω resistor from FSADJ to GND yields the nominal 40 mA output; values are linearly scalable, and the DAC maintains ±0.09% FSR offset error across the entire range.

What SPI interface voltage does the LTC2000ACY-11#PBF require?

The LTC2000ACY-11#PBF SPI interface (CS, SCK, SDI, SDO) operates from the SVDD supply, which accepts 1.71 V to 3.465 V. Logic thresholds are defined as 70% V_SVDD for VIH and 30% V_SVDD for VIL, allowing direct interfacing with 1.8 V or 3.3 V FPGA I/O banks without level shifters.

Can the LTC2000ACY-11#PBF generate waveforms without external memory or FPGA control?

Yes-the LTC2000ACY-11#PBF includes an integrated pattern generator that supports PRBS sequences and user-loaded 128-word × 16-bit patterns stored in on-chip SRAM. This allows self-contained waveform playback for factory test or diagnostic routines without continuous host processor intervention, though full application flexibility still requires external FPGA or microcontroller control.