THS1031CPW Equivalent & Substitute Parts

Part Overview

The THS1031CPW is a 10-bit pipelined analog-to-digital converter manufactured by Texas Instruments, housed in a 28-TSSOP surface mount package. This device features a single differential or single-ended input with a 30 MHz sampling rate and supports both external and internal voltage references. The THS1031CPW is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Resolution	10 Bits
Sampling Rate	30 MHz
Number of Inputs	1
Input Type	Differential, Single Ended
Architecture	Pipelined
Data Interface	Parallel
Package	28-TSSOP
Analog Supply Voltage	3V ~ 5.5V
Digital Supply Voltage	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the THS1031CPW is determined by the following core parameters:

Resolution: 10 bits (exact match required)
Architecture: Pipelined (exact match required)
Package: 28-TSSOP (exact match required)
Input Configuration: Single input with differential and single-ended capability (exact match required)
Data Interface: Parallel (exact match required)
Mounting Type: Surface mount (exact match required)

The ADC10040QCIMT/NOPB qualifies as a manufacturer-recommended substitute. While it maintains identical resolution, architecture, package, input configuration, and data interface specifications, it introduces differences in sampling rate, supply voltage ranges, operating temperature range, and product status. These differences must be evaluated against specific application requirements.

Parameter Comparison

Parameter	THS1031CPW	ADC10040QCIMT/NOPB
Manufacturer	Texas Instruments	Texas Instruments
Resolution	10 Bits	10 Bits
Sampling Rate	30 MHz	40 MHz
Number of Inputs	1	1
Input Type	Differential, Single Ended	Differential, Single Ended
Architecture	Pipelined	Pipelined
Data Interface	Parallel	Parallel
Configuration	S/H-PGA-ADC	S/H-ADC
Package	28-TSSOP	28-TSSOP
Analog Supply Voltage	3V ~ 5.5V	2.7V ~ 3.6V
Digital Supply Voltage	3V ~ 5.5V	2.5V ~ 3.6V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Mounting Type	Surface Mount	Surface Mount

Engineering Selection Recommendations

The ADC10040QCIMT/NOPB is the manufacturer-recommended substitute for the obsolete THS1031CPW. Both devices maintain ROHS3 compliance and REACH unaffected status. The ADC10040QCIMT/NOPB carries active product status, ensuring continued availability and manufacturing support.

Key considerations for selection:

Supply Voltage Compatibility: The ADC10040QCIMT/NOPB operates at narrower supply voltage ranges (2.7V–3.6V analog, 2.5V–3.6V digital) compared to the THS1031CPW (3V–5.5V). Verify that existing power supply designs fall within the ADC10040QCIMT/NOPB specifications.
Sampling Rate: The ADC10040QCIMT/NOPB provides 40 MHz sampling rate versus the THS1031CPW's 30 MHz. This higher performance is backward compatible with applications requiring 30 MHz or lower sampling rates.
Operating Temperature Range: The ADC10040QCIMT/NOPB supports -40°C to 85°C, extending the lower temperature limit compared to the THS1031CPW (0°C–70°C). This provides broader environmental coverage.
Configuration Difference: The THS1031CPW includes a programmable gain amplifier (PGA) in its signal chain (S/H-PGA-ADC), while the ADC10040QCIMT/NOPB does not (S/H-ADC). Applications relying on integrated gain adjustment must implement external amplification or alternative gain control methods.
Automotive Qualification: The ADC10040QCIMT/NOPB carries AEC-Q100 automotive qualification, suitable for automotive and high-reliability applications.

Frequently Asked Questions (FAQ)

Q: Can the ADC10040QCIMT/NOPB directly replace the THS1031CPW in existing designs?

A: Direct replacement requires verification of supply voltage compatibility. The ADC10040QCIMT/NOPB operates at 2.7V–3.6V (analog) and 2.5V–3.6V (digital), which must align with your power supply design. Additionally, the absence of an integrated PGA in the ADC10040QCIMT/NOPB requires external gain implementation if the original design relied on the THS1031CPW's programmable gain stage.

Q: What is the impact of the higher 40 MHz sampling rate in the ADC10040QCIMT/NOPB?

A: The increased sampling rate is a performance enhancement. Applications designed for 30 MHz operation will function correctly at the higher rate. No design modifications are required to accommodate this specification.

Q: Are both devices pin-compatible?

A: Both devices use the 28-TSSOP package with identical physical dimensions (0.173" width, 4.40mm). Pin compatibility must be verified against the specific pinout diagrams for each device, as internal signal routing may differ.

Q: What compliance certifications apply to the ADC10040QCIMT/NOPB?

A: The ADC10040QCIMT/NOPB is ROHS3 compliant, REACH unaffected, and carries AEC-Q100 automotive qualification. These certifications support use in regulated and automotive applications.

Q: How does the absence of the PGA affect system design?

A: The THS1031CPW integrates a programmable gain amplifier, while the ADC10040QCIMT/NOPB does not. Systems requiring variable gain must implement external amplification using discrete operational amplifiers or dedicated gain-programmable amplifier ICs. This adds component count and board area but provides equivalent functionality.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message