ADS4149IRGZR Equivalent & Substitute Parts

Part Overview

The ADS4149IRGZR is a 14-bit pipelined analog-to-digital converter manufactured by Texas Instruments, designed for high-speed data acquisition applications. This single-input differential ADC operates at a 250 MHz sampling rate and is housed in a 48-VQFN (7x7) package with exposed pad. The device is currently in active production status with ROHS3 compliance and REACH unaffected classification. Substitute parts are identified to address packaging format variations and inventory availability while maintaining full electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resolution	14 Bits
Sampling Rate	250 MHz
Number of Inputs	1
Input Type	Differential
Architecture	Pipelined
Data Interface	LVDS - Parallel, Parallel
Reference Type	Internal
Analog Supply Voltage	1.7V ~ 1.9V
Digital Supply Voltage	1.7V ~ 1.9V
Operating Temperature Range	-40°C ~ 85°C
Package Type	48-VQFN (7x7) Exposed Pad
Mounting Type	Surface Mount
Moisture Sensitivity Level	3 (168 Hours)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ADS4149IRGZR are qualified based on identical electrical specifications and mechanical compatibility. The substitution criteria are strictly limited to the following parameters:

14-bit resolution
250 MHz sampling rate
Single differential input
Pipelined architecture
Internal reference
1.7V ~ 1.9V supply voltage (both analog and digital)
-40°C ~ 85°C operating temperature
48-VQFN (7x7) package with exposed pad
Surface mount configuration
ROHS3 compliance
MSL 3 rating

Variations in packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and base product number designations do not affect electrical or mechanical compatibility. All substitute parts maintain identical functional performance and pin configuration.

Parameter Comparison

Parameter	ADS4149IRGZR	ADS4149IRGZT	ADS41B49IRGZT
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Resolution (Bits)	14	14	14
Sampling Rate	250 MHz	250 MHz	250 MHz
Number of Inputs	1	1	1
Input Type	Differential	Differential	Differential
Data Interface	LVDS - Parallel, Parallel	LVDS - Parallel, Parallel	LVDS - Parallel, Parallel
Architecture	Pipelined	Pipelined	Pipelined
Reference Type	Internal	Internal	Internal
Analog Supply Voltage	1.7V ~ 1.9V	1.7V ~ 1.9V	1.7V ~ 1.9V
Digital Supply Voltage	1.7V ~ 1.9V	1.7V ~ 1.9V	1.7V ~ 1.9V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	48-VQFN Exposed Pad	48-VQFN Exposed Pad	48-VQFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount
MSL Rating	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Packaging Format	Standard	Cut Tape & Digi-Reel	Tape & Reel

Engineering Selection Recommendations

All three parts—ADS4149IRGZR, ADS4149IRGZT, and ADS41B49IRGZT—are active production devices from Texas Instruments with identical electrical specifications and mechanical compatibility. Selection between these parts should be based on packaging format requirements and supply chain availability:

ADS4149IRGZR: Standard packaging format with 2231 units in stock
ADS4149IRGZT: Cut Tape & Digi-Reel format with 1666 units in stock
ADS41B49IRGZT: Tape & Reel format with 2982 units in stock

All parts maintain ROHS3 compliance, REACH unaffected status, and identical MSL 3 ratings. Direct substitution is permissible without design modification or re-qualification when packaging format compatibility with assembly equipment is confirmed.

Frequently Asked Questions (FAQ)

Q: Can ADS4149IRGZT be used as a direct replacement for ADS4149IRGZR?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: ADS4149IRGZR uses standard packaging while ADS4149IRGZT uses Cut Tape & Digi-Reel format. Direct substitution is permissible if your assembly process supports the packaging format.

Q: What is the difference between ADS4149IRGZT and ADS41B49IRGZT?

A: Both parts are electrically and mechanically identical 14-bit, 250 MHz pipelined ADCs in 48-VQFN packages. The primary difference is packaging format: ADS4149IRGZT uses Cut Tape & Digi-Reel while ADS41B49IRGZT uses Tape & Reel. The base product number designation (ADS4149 versus ADS41B49) reflects packaging variation only.

Q: Are all three parts ROHS3 compliant?

A: Yes. ADS4149IRGZR, ADS4149IRGZT, and ADS41B49IRGZT are all ROHS3 compliant with REACH unaffected status.

Q: What is the MSL rating for these parts?

A: All three parts carry MSL 3 rating with a 168-hour floor life. Proper moisture control during storage and handling is required per IPC standards.

Q: Can these parts be used interchangeably in production?

A: Yes, provided your assembly equipment supports the specific packaging format. Electrical performance and pin configuration are identical across all three part numbers.

Q: What supply voltages do these ADCs require?

A: Both analog and digital supply voltages operate in the 1.7V ~ 1.9V range. Separate supply pins allow independent regulation if required by system design.

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