Part A
ADS7841E
德州儀器
- Lifecycle
- Active
- Stock
- 5990 件
- Package
- SSOP-16
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS7841E and ADS7841E/2K5G4 are functionally equivalent 12-bit 4-channel serial ADC devices sharing identical core specifications, with the only distinction being tape-and-reel packaging quantity; the /2K5G4 variant is a validated drop-in replacement candidate for the base ADS7841E in production and prototyping environments.
Resolution and Architecture
High match
Channel Count and Input Type
High match
Package and Pinout
High match
Supply Voltage and Interface
High match
Parts at a glance
Part B
ADS7841E/2K5G4
德州儀器
- Lifecycle
- Active
- Stock
- 5974 件
- Package
- SSOP-16
- Series
- 資料獲取-模數轉換器（ADC）
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADS7841E | ADS7841E/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the smallest analog signal change the ADC can distinguish; identical resolution means equivalent measurement precision. |
| Number of Channels | 4 single-ended / 2 differential | 4 single-ended / 2 differential | Defines how many analog inputs can be sampled; matching channel configuration ensures the same input topology can be used. |
| Sampling Rate | 200 kSPS | 200 kSPS | Sets the maximum conversion throughput; identical rate means the same signal bandwidth and timing budget apply. |
| Supply Voltage Range | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Determines compatibility with the system power rail; matching range allows drop-in use in the same supply design. |
| Interface Type | SPI (serial) | SPI (serial) | Defines the digital communication protocol; identical interface ensures firmware and host connections remain compatible. |
| Package / Case | 16-SSOP (SSOP-16) | 16-SSOP (SSOP-16) | Determines PCB footprint and assembly; matching package allows the same board layout to be reused. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Specifies environmental limits for reliable operation; identical range means the same application environments are supported. |
| Packaging / Reel Quantity | Tube / bulk | Tape & reel (2500 units) | Affects manufacturing handling and inventory; the reel variant suits automated high-volume assembly while the tube variant suits prototyping or low-volume runs. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7841E | ADS7841E/2K5G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Obsolete |
| Number of Bits | - | 12 |
| Sampling Rate(Per Second) | - | 200k |
| Number of Inputs | - | 4 |
| Input Type | - | Single Ended |
| Data Interface | - | SPI |
| Configuration | - | MUX-S/H-ADC |
| Ratio - S / H: ADC | - | 1:1 |
| Number of A/D Converters | - | 1 |
| Architecture | - | SAR |
| Reference Type | - | External |
| Voltage - Supply, Analog | - | 2.7V ~ 3.6V, 5V |
| Voltage - Supply, Digital | - | 2.7V ~ 3.6V, 5V |
| Operating Temperature | - | -40°C ~ 125°C |
Frequently asked questions
What is the difference between ADS7841E and ADS7841E/2K5G4?
Both are the same ADS7841 12-bit, 4-channel serial ADC from Texas Instruments. The ADS7841E is the tube/rail packaging orderable, while ADS7841E/2K5G4 is the same die supplied in tape-and-reel form (2,500 units per reel) and qualified as a Green (RoHS-compliant, Pb-free) product. The electrical specifications are identical; the difference is packaging, reel quantity, and the G4 green-material designation.
Are the ADS7841E and ADS7841E/2K5G4 electrically and functionally interchangeable?
Yes. Both share the same 12-bit SAR ADC core, 4 single-ended or 2 differential input channels, 200 kSPS throughput, SPI/QSPI/Microwire-compatible serial interface, and 2.7 V to 5.25 V supply range. Because they are the same silicon in the same package, they are functionally interchangeable; only the delivery format and green-material qualification differ.
What package do the ADS7841E and ADS7841E/2K5G4 use?
Both devices are offered in a 16-pin SSOP (Shrink Small Outline Package) designated by the "E" suffix in the orderable part number. The package footprint and pinout are identical between the two orderables.
What is the difference between the "E" and "E/2K5G4" suffixes in terms of ordering?
The "E" suffix identifies the 16-pin SSOP package. The "/2K5" indicates tape-and-reel packaging with 2,500 devices per reel, and "G4" indicates the Green (Pb-free, RoHS-compliant) material set. The base ADS7841E is typically supplied in tube form. Designers should select the orderable that matches their production packaging and environmental compliance requirements.
Does the G4 designation affect the electrical performance of the ADS7841E/2K5G4?
No. The G4 designation refers to the green-material (Pb-free/RoHS) construction of the package and does not alter the ADC's electrical specifications. The datasheet parameters such as resolution, throughput, INL, DNL, and supply current apply equally to both orderables.
What are the key performance specifications shared by both parts?
Both are 12-bit successive-approximation ADCs with 4 single-ended or 2 differential inputs, up to 200 kSPS sampling rate, SPI-compatible serial interface, 2.7 V to 5.25 V single-supply operation, and low power consumption suitable for battery-powered and portable instrumentation. These parameters are common to the ADS7841 family and apply to both orderables.
Can I substitute ADS7841E/2K5G4 for ADS7841E in an existing design?
Yes, provided the design already uses the 16-pin SSOP footprint and the assembly process accepts Pb-free/RoHS (G4) material. Since the die, package, and pinout are identical, the substitution is electrically transparent; the only practical considerations are reel-based feeding versus tube feeding and the green-material compliance of the finished assembly.
Which orderable should I choose for high-volume production?
For high-volume automated assembly, ADS7841E/2K5G4 is generally preferred because the 2,500-piece tape-and-reel format supports pick-and-place equipment and the G4 designation satisfies RoHS/Pb-free compliance requirements. ADS7841E in tube form is typically used for prototyping, low-volume runs, or hand assembly.