THS1408QPHP Equivalent & Substitute Parts

Part Overview

The THS1408QPHP is a 14-bit pipelined analog-to-digital converter manufactured by Texas Instruments, designed for single-channel differential input applications with an 8 MHz sampling rate. This component is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

THS1408QPHP

Texas InstrumentsIn Stock: 1081THS1408QPHP Datasheet

Current PartRFQ

THS1408IPFB

Texas InstrumentsIn Stock: 1807THS1408IPFB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the THS1408QPHP is determined by strict equivalence across the following critical parameters:

• Resolution: 14-bit conversion capability
• Sampling Rate: 8 MHz per second
• Input Configuration: Single differential input channel
• Architecture: Pipelined ADC topology
• Signal Chain: Programmable Gain Amplifier with Sample/Hold and ADC
• Supply Voltage: 3V to 3.6V for both analog and digital rails
• Data Interface: Parallel output
• Mounting: Surface mount technology
• Compliance: ROHS3 certification

The THS1408IPFB qualifies as a manufacturer-recommended substitute based on identical electrical specifications and functional architecture. Differences in package designation (48-TQFP versus 48-PowerTQFP) and operating temperature range represent the primary distinctions between these variants.

Parameter Comparison

Engineering Selection Recommendations

The THS1408IPFB is the manufacturer-recommended substitute for the discontinued THS1408QPHP. Both components maintain identical electrical specifications, functional architecture, and regulatory compliance status (ROHS3 Compliant, REACH Unaffected).

Selection between these variants depends on application-specific requirements:

The THS1408QPHP operates across an extended temperature range (-40°C to 125°C) and utilizes a PowerTQFP package variant. The THS1408IPFB operates within a standard industrial temperature range (0°C to 70°C) and uses a standard TQFP package.

For applications requiring extended temperature operation below 0°C or above 70°C, the THS1408QPHP specifications must be maintained through alternative sourcing channels. For applications within the 0°C to 70°C operating window, the THS1408IPFB provides active product status with current manufacturing availability.

Frequently Asked Questions (FAQ)

Q: Are the THS1408QPHP and THS1408IPFB pin-compatible?

A: Both components use 48-pin surface mount packages with identical pin assignments and electrical functionality. Package designation differences (PowerTQFP versus TQFP) reflect thermal management and manufacturing variations but do not affect electrical compatibility.

Q: What is the primary difference between these two parts?

A: The THS1408QPHP is discontinued and operates across -40°C to 125°C. The THS1408IPFB is an active product with 0°C to 70°C operating range. All electrical specifications, resolution, sampling rate, and signal chain architecture are identical.

Q: Can the THS1408IPFB replace the THS1408QPHP in existing designs?

A: Substitution is valid for applications operating within the 0°C to 70°C temperature range. Applications requiring extended temperature operation must source the THS1408QPHP through alternative channels or redesign for the supported temperature window.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the THS1408QPHP and THS1408IPFB carry ROHS3 Compliant certification and are REACH Unaffected.

Q: What is the moisture sensitivity level for these components?

A: Both parts carry MSL 2 (1 Year) classification, indicating standard moisture handling requirements for surface mount assembly processes.