TLV2553IPW Equivalent & Substitute Parts

Part Overview

The TLV2553IPW is a 12-bit Analog to Digital Converter (ADC) with SAR architecture, featuring 11 single-ended inputs and SPI data interface. This component is classified as Obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations. The part operates across a supply voltage range of 2.7V to 5.5V for both analog and digital domains, with a sampling rate of 200 kSPS and external reference configuration.

Key Parameters

Parameter	Value
Resolution	12 Bit
Number of Inputs	11
Sampling Rate	200 kSPS
Architecture	SAR
Data Interface	SPI
Input Type	Single Ended
Reference Type	External
Supply Voltage (Analog)	2.7V ~ 5.5V
Supply Voltage (Digital)	2.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package	20-TSSOP
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the TLV2553IPW is determined by the following critical parameters: 12-bit resolution, SAR architecture, SPI interface, external reference configuration, and surface mount packaging. Substitute parts must maintain compatibility across these core electrical and mechanical specifications.

Two substitute options are identified:

MFR Recommended Substitute (ADS7952SBDBTR): Maintains 12-bit resolution, SAR architecture, SPI interface, and external reference. This part increases sampling rate to 1 MSps and extends the input channel count to 12. Operating temperature range extends to 125°C. Package changes to 38-TSSOP, requiring PCB layout modification.

Parametric Equivalent (TLV2553IPWG4): Identical electrical specifications and 20-TSSOP package to the main part. Differs only in product status classification (Discontinued at DiGi Electronics versus Obsolete).

Parameter Comparison

Parameter	TLV2553IPW	ADS7952SBDBTR	TLV2553IPWG4
Resolution (Bits)	12	12	12
Number of Inputs	11	12	11
Sampling Rate (kSPS)	200	1000	200
Architecture	SAR	SAR	SAR
Data Interface	SPI	SPI	SPI
Input Type	Single Ended	Single Ended	Single Ended
Reference Type	External	External	External
Supply Voltage - Analog (V)	2.7 ~ 5.5	2.7 ~ 5.25	2.7 ~ 5.5
Supply Voltage - Digital (V)	2.7 ~ 5.5	1.7 ~ 5.25	2.7 ~ 5.5
Operating Temperature (°C)	-40 ~ 85	-40 ~ 125	-40 ~ 85
Package / Case	20-TSSOP	38-TSSOP	20-TSSOP
Product Status	Obsolete	Active	Discontinued at DiGi Electronics
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	2 (1 Year)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement: TLV2553IPWG4 provides identical electrical performance and package compatibility. Both parts maintain ROHS3 compliance and EAR99 classification. This option requires no PCB redesign and preserves all original system specifications.

For Active Product Status: ADS7952SBDBTR is the manufacturer-recommended substitute with Active product status, ensuring long-term availability and supply chain continuity. This part requires PCB layout modification due to package change from 20-TSSOP to 38-TSSOP. The extended operating temperature range (-40°C to 125°C) and increased sampling rate (1 MSps) provide enhanced performance margins. Digital supply voltage range extends to 1.7V minimum, enabling operation in lower-power applications. All parts maintain ROHS3 compliance and identical ECCN/HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can ADS7952SBDBTR replace TLV2553IPW without firmware changes?

A: The ADS7952SBDBTR maintains SPI interface compatibility and identical 12-bit SAR architecture. However, the increased input channel count (12 versus 11) and higher sampling rate (1 MSps versus 200 kSPS) require firmware verification. PCB layout modification is mandatory due to package change from 20-TSSOP to 38-TSSOP.

Q: What are the key differences between TLV2553IPWG4 and the original TLV2553IPW?

A: Both parts are electrically and mechanically identical. The distinction is product status classification: TLV2553IPWG4 is listed as Discontinued at DiGi Electronics, while TLV2553IPW is classified as Obsolete. Both maintain identical specifications, packaging, and compliance certifications.

Q: Are all three parts ROHS3 compliant?

A: Yes. TLV2553IPW, ADS7952SBDBTR, and TLV2553IPWG4 are all ROHS3 compliant with identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the impact of the 38-TSSOP package change for ADS7952SBDBTR?

A: The 38-TSSOP package has different pin count and physical dimensions compared to the 20-TSSOP package. PCB footprint redesign is required. The wider package (0.173" width, identical to 20-TSSOP) maintains similar board space efficiency, but pin routing and connector placement must be re-evaluated.

Q: Does ADS7952SBDBTR support the same supply voltage range?

A: The analog supply range is slightly reduced (2.7V to 5.25V versus 2.7V to 5.5V). The digital supply range is extended (1.7V to 5.25V versus 2.7V to 5.5V). System designs operating at 5.5V analog supply require verification with ADS7952SBDBTR specifications.

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