Texas Instruments ADC14L040CIVY/NOPB

Overview

ADC14L040CIVY/NOPB from Texas Instruments is a 14-bit, 40 MSPS pipeline analog-to-digital converter with internal sample-and-hold, internal reference, and duty cycle stabilizer. It operates on a single +3.3V supply, consumes 235 mW at full speed, achieves 11.9 effective bits at Nyquist, and delivers 74 dB SNR and 90 dB SFDR at 10 MHz input - used in medical imaging front-ends requiring high dynamic range and low power.

For engineers reviewing the ADC14L040CIVY/NOPB datasheet, ADC14L040CIVY/NOPB pinout, ADC14L040CIVY/NOPB application, or ADC14L040CIVY/NOPB equivalent, key selection considerations include its 14-bit resolution with no missing codes, 7-clock-cycle latency, differential input architecture supporting 2×VREF full-scale swing, and dual-supply digital output drivers (2.4V–3.6V) enabling interface to lower-voltage logic.

Technical Context

The ADC14L040CIVY/NOPB implements an 11-stage pipeline architecture with digital error correction and on-chip sample-and-hold, delivering 150 MHz full-power bandwidth. Its differential analog inputs accept ±1.0 V common-mode voltage (0.5–2.0 V range) and support both differential and single-ended configurations, though differential operation is required for specified performance.

It features a quad-state DF/DCS pin enabling selection of offset binary or two's complement output format, with or without duty cycle stabilization applied to the CLK input. The internal reference supports three modes: 1.0 V (default), 0.5 V, or user-defined external reference (0.4–3.0 V), with full-scale differential range = 2 × VREF.

Key Specifications

Pinout & Package

The ADC14L040CIVY/NOPB is housed in a 32-lead LQFP package (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Power and ground pins are distributed to minimize noise coupling between analog and digital domains; VRP/VRM/VRN require dedicated low-ESL 0.1 µF bypassing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS5463IPFP and AD9240ASTZ, the ADC14L040CIVY/NOPB uniquely balances 40 MSPS speed, 14-bit resolution, sub-250 mW power, and integrated reference in a 32-pin LQFP - making it optimal for cost- and space-constrained mid-speed digitizers where thermal and layout simplicity matter.

Availability

ADC14L040CIVY/NOPB is available at Aetrix Electronics and suitable for medical imaging subsystems, communications baseband receivers, portable oscilloscopes, and test & measurement signal analyzers requiring stable component supply and long-term manufacturability.

Supply support for ADC14L040CIVY/NOPB 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in high-performance data converters and signal chain solutions.

The ADC14L040CIVY/NOPB belongs to TI's precision high-speed ADC product line, engineered for applications demanding low power, excellent dynamic performance, and ease of system integration - particularly in portable and thermally constrained instrumentation.

FAQ

What is the minimum clock frequency supported by the ADC14L040CIVY/NOPB?

The ADC14L040CIVY/NOPB supports a minimum clock frequency of 5 MHz, as specified in its AC Electrical Characteristics table. Operation below this frequency may result in degraded timing margins, increased aperture jitter, or failure to meet guaranteed DNL/SNR performance. For low-frequency applications requiring <5 MHz sampling, consider using external clock division or selecting a lower-speed ADC such as the AD9240ASTZ. The ADC14L040CIVY/NOPB is optimized for continuous operation between 5 MHz and 40 MHz.

Does the ADC14L040CIVY/NOPB require external reference components?

The ADC14L040CIVY/NOPB includes an internal 1.0 V reference and does not require external reference components for basic operation. When using the internal reference, connect VREF to VA and bypass VRP/VRM/VRN per datasheet guidelines. An external reference (0.4–3.0 V) is optional and recommended only when higher accuracy, temperature stability, or custom full-scale range is needed - in which case a low-noise source like the LM4051CIM3-ADJ is advised. The ADC14L040CIVY/NOPB reference architecture is self-contained.

Can the ADC14L040CIVY/NOPB interface directly to a 2.5 V FPGA I/O bank?

Yes, the ADC14L040CIVY/NOPB can interface directly to a 2.5 V FPGA I/O bank using its independent VDR pin. Set VDR = 2.5 V (within 2.4–3.6 V range) and connect DRGND to the FPGA's 2.5 V domain ground. The digital outputs will then swing between 0 V and ~2.3 V (for VDR = 2.5 V), meeting standard 2.5 V LVTTL/LVCMOS input thresholds. This eliminates level shifters while preserving timing integrity - a key advantage of the ADC14L040CIVY/NOPB's dual-supply output architecture.

What is the purpose of the VRM pin on the ADC14L040CIVY/NOPB?

The VRM pin on the ADC14L040CIVY/NOPB serves two functions: (1) it provides a temperature-stable 1.5 V reference output (up to 1 mA load), and (2) it supplies the common-mode voltage (VCM) for the differential analog inputs when configured accordingly. Per the datasheet, VRM must be bypassed to AGND with a low-ESL 0.1 µF capacitor and used with 10 µF between VRP–VRN. It is not a power supply pin but a precision reference node critical for analog input biasing and system-level calibration - misrouting VRM compromises INL and SNR performance in the ADC14L040CIVY/NOPB.

How does power-down mode affect the output pins of the ADC14L040CIVY/NOPB?

In power-down mode (PD = high), the ADC14L040CIVY/NOPB disables all internal circuitry including the pipeline stages, sample-and-hold, and digital output drivers. As a result, the D0–D13 output pins enter a high-impedance (tri-stated) state - they neither drive logic high nor low and present minimal capacitive loading. This prevents bus contention and reduces system-level power consumption. Recovery requires ≥280 µs after PD returns low before valid data appears; during this exit cycle, outputs remain inactive. This behavior is explicitly defined in the ADC14L040CIVY/NOPB's timing specifications.