Texas Instruments TLV5535IPWR

Overview

TLV5535IPWR from Texas Instruments is an 8-bit, 35 MSPS analog-to-digital converter optimized for IF sampling and high-speed DSP front-ends. It operates from a single 3.3-V supply, consumes 90 mW typical power, features 600 MHz analog input bandwidth, and delivers 7.4-bit ENOB at 4.2 MHz input - deployed in DVD read channel digitization and medical imaging systems.

For engineers reviewing the TLV5535IPWR datasheet, TLV5535IPWR pinout, TLV5535IPWR application, or TLV5535IPWR equivalent, key selection considerations include its 35 MSPS sampling rate with pipeline latency of 4.5 clock cycles, external or internal reference flexibility, 3.3-V TTL/CMOS-compatible digital I/O, and TSSOP-28 package thermal and layout constraints for high-frequency signal integrity.

Technical Context

The TLV5535IPWR implements a single-pipeline ADC architecture with six 2-bit stages plus one final flash stage, corrected by logic that combines first-stage 2-bit output and one bit from each subsequent stage to produce a monotonic 8-bit result with no missing codes across –40°C to 85°C. Its sampling-and-hold captures single-ended analog inputs synchronized to CLK rising edges.

Digital outputs D0–D7 are three-state, driven by separate DRVDD/DRVSS rails to minimize noise coupling; timing requires use of CLK falling edge for reliable data capture due to td(o) > ½ clock period at 35 MHz. Reference configuration supports independent external top (REFTI) and bottom (REFBI) inputs or internal REFBO/REFTO outputs, with PWDN_REF enabling selective shutdown of reference circuitry.

Key Specifications

Pinout & Package

TLV5535IPWR is housed in a 28-pin Thin Shrink SOP (TSSOP) package with exposed pad not electrically connected. Analog (AVDD/AVSS), digital (DVDD/DVSS), and driver (DRVDD/DRVSS) supplies are physically segregated to support split-ground PCB layout. Pin 1 (DRVDD) and pin 10 (DRVSS) define the digital output driver rail; pins 16/27 (AVDD) and 18/23/28 (AVSS) serve analog core and references.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog-to-digital converter applications.

Compared with ADS830E and MAX1186ETL+, the TLV5535IPWR offers optimal balance of 35 MSPS speed, 90 mW power, and integrated reference flexibility in TSSOP-28 - making it uniquely suited for space-constrained, battery-aware IF digitizers where board area and thermal management are critical.

Availability

TLV5535IPWR is available at Aetrix Electronics and suitable for digital communications infrastructure, portable medical imaging devices, and consumer video processing equipment requiring stable component supply throughout product lifecycles.

Supply support for TLV5535IPWR 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 and embedded processing technologies, with decades of expertise in high-speed data converters and signal chain solutions.

The TLV5535IPWR belongs to TI's legacy high-speed ADC portfolio designed for cost-sensitive, power-constrained applications including IF sampling, video digitization, and medical instrumentation - emphasizing integration, low power, and ease of layout.

FAQ

What is the absolute maximum analog input voltage for TLV5535IPWR?

The absolute maximum analog input voltage for TLV5535IPWR is AVDD + 0.5 V relative to AVSS. With AVDD = 3.6 V, this allows up to 4.1 V peak input. However, the recommended operating range is strictly between V(REFBI) and V(REFTI), typically 0.8–2.5 V at AVDD = 3.3 V, to avoid code overflow and maintain linearity. Exceeding these bounds risks missing codes or increased INL beyond ±2.4 LSB.

Does TLV5535IPWR support differential analog inputs?

No, TLV5535IPWR accepts only single-ended analog inputs on pin AIN (26). Its internal sampling-and-hold and pipeline architecture are designed for ground-referenced or AC-coupled single-ended signals. For differential input support, designers must add external instrumentation amplifiers or fully differential op-amps prior to AIN - as shown in Figure 13(a) and 14 of the TLV5535IPWR datasheet.

How does the 4.5-cycle pipeline latency affect system timing in TLV5535IPWR?

The 4.5-cycle pipeline latency in TLV5535IPWR means valid digital output appears 4.5 clock periods after the corresponding analog sample is taken. At 35 MSPS, this equals 128.6 ns. To capture stable data, system logic must synchronize to the falling edge of CLK due to 9 ns output delay exceeding half the 28.6 ns clock period - a constraint explicitly called out in Note 6 of the TLV5535IPWR datasheet.

Can TLV5535IPWR operate with only internal references enabled?

Yes, TLV5535IPWR can operate using only internal references: connect REFBO (22) to REFBI (21) and REFTO (19) to REFTI (20), then tie PWDN_REF (24) low. This configures a 1.0–1.3 Vpp full-scale range depending on AVDD. The internal references are trimmed and stable over temperature, delivering ±0.7 LSB INL at 25°C - sufficient for non-calibrated video or communications applications where absolute accuracy is secondary to speed and power.

What PCB layout practices are critical for achieving specified SNRD with TLV5535IPWR?

To achieve the specified 46 dB SNRD, TLV5535IPWR requires strict separation of analog (AVDD/AVSS) and digital (DVDD/DVSS/DRVDD/DRVSS) ground planes, joined only at a single point near the device. Decoupling capacitors - 1 µF tantalum + 0.1 µF ceramic on AVDD, DVDD, and DRVDD - must be placed within 2 mm of respective pins. Clock traces should be impedance-controlled (50 Ω) and routed away from analog input paths to minimize jitter-induced noise.