Analog Devices Inc. DC1513B-AC

Overview

DC1513B-AC from Analog Devices (formerly Linear Technology) is a 14-bit direct conversion receiver μModule subsystem integrating dual high-speed ADCs, I/Q demodulator, on-chip broadband transformers, and DC-coupled baseband signal chain. It operates with RF input from 0.7GHz to 2.7GHz, delivers 70.3dB SNR at 9.42MHz baseband bandwidth, and supports 125MHz sampling - deployed in cellular basestation zero-IF receivers requiring high linearity and low DC offset.

For engineers reviewing the DC1513B-AC datasheet, DC1513B-AC pinout, DC1513B-AC application, or DC1513B-AC equivalent, key selection criteria include its 9.42MHz lowpass filter cutoff, 0.2dB I/Q gain mismatch, 1.5° phase mismatch, 3V second-amplifier supply requirement, and 204-lead LGA package thermal performance (θJCbottom = 6.9°C/W).

Technical Context

The DC1513B-AC implements a fully integrated quadrature demodulation architecture with differential gain stages and dual 14-bit ADCs sharing a common RF/LO interface. Its DC-coupled signal path enables precise baseband DC offset adjustment via four dedicated ADJ pins (I±_ADJ, Q±_ADJ), while integrated 50Ω single-ended RF and LO ports eliminate external matching in high-band operation (1.5–2.7GHz).

It features a configurable clock duty cycle stabilizer, optional digital output multiplexer (MUX), and three power management modes (active/sleep/nap). The subsystem uses separate analog supplies: 5V for mixer/first amplifier (VCC1/VCC2), 3V for second amplifier (VCC3), 3V for ADC core (VDD), and 0.5–3.6V for digital outputs (OVDD).

Key Specifications

Pinout & Package

DC1513B-AC is housed in a 204-lead LGA package (15mm × 22mm × 2.91mm) with exposed thermal pad on underside. Pin assignment follows standard LTM9004-AC pinout per Linear Technology documentation (Rev. FA), with GND, VCC1, VCC2, VCC3, VDD, OVDD, OGND, RF, LO, CLKI/CLKQ, I±_ADJ, Q±_ADJ, MIXENABLE, AMP1ENABLE, AMP2ENABLE, ADCSHDNI/Q, OEI/OEQ, MUX, MODE, CLKOUT, OF, DI0–DI13, DQ0–DQ13 distributed across 13×17 grid.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar direct conversion receiver applications.

Compared with LTM9004-AC#PBF, DC1513B-AC provides immediate hardware validation capability; compared with AD9371BBCZ, it offers superior SNR (70.3dB vs 68dB) and lower power (1.83W vs ~3.5W) in simpler zero-IF architectures without synthesizer overhead.

Availability

DC1513B-AC is available at Aetrix Electronics and suitable for cellular basestation development, wireless infrastructure prototyping, and SDR receiver design requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for DC1513B-AC 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 communications, industrial, automotive, and healthcare markets.

The DC1513B-AC is part of ADI's μModule receiver product line, designed to simplify high-frequency receiver design by integrating RF, analog, and mixed-signal functions into compact, thermally optimized LGA packages for wireless infrastructure and instrumentation.

FAQ

What is the baseband bandwidth supported by the DC1513B-AC?

The DC1513B-AC supports a baseband frequency range of DC to 9.42MHz, corresponding to its LTM9004-AC variant configuration. This bandwidth is defined by the integrated lowpass filter's 1dB cutoff point and enables full capture of LTE 20MHz channels with guard bands. The value is fixed per device variant and cannot be reconfigured in-circuit.

Does the DC1513B-AC require external RF matching components?

The DC1513B-AC integrates on-chip broadband transformers and requires no external matching network for RF input frequencies between 1.5GHz and 2.7GHz. For operation below 1.5GHz (e.g., 700MHz band), an external series capacitor (and optionally shunt capacitor) is required to transform impedance to 50Ω, as specified in Linear Technology Application Note 9004.

How is DC offset adjusted on the DC1513B-AC?

DC offset is adjusted on the DC1513B-AC using four dedicated pins: I+_ADJ (B1), I–_ADJ (C1), Q+_ADJ (K1), and Q–_ADJ (L1). Current sourced or sunk through these pins trims the DC baseline of each I/Q channel independently. Typical adjustment range is ±35mV with 210µV/°C drift over temperature.

What power supply voltages does the DC1513B-AC require?

The DC1513B-AC requires five distinct supply rails: VCC1/VCC2 = 5V (mixer/first amplifier), VCC3 = 3V (second amplifier, specific to -AC/-AD variants), VDD = 3V (ADC analog core), and OVDD = 0.5–3.6V (digital output drivers). All supplies must be independently bypassed per the LTM9004 layout guidelines.

Can the DC1513B-AC operate in low-power modes?

Yes, the DC1513B-AC supports three power states: Active (1.83W), Nap Mode (33mW), and Sleep Mode (7mW). These are controlled via ADCSHDNI/Q and OEI/OEQ pins. Nap Mode disables ADC clocks while preserving bias; Sleep Mode powers down all analog blocks except reference circuitry.