Part A
ADS7841E
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 5990 PCS
- Package
- SSOP-16
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7841E and ADS7841ES/2K5G4 are functionally equivalent 12-bit, 4-channel serial ADC devices sharing the same core architecture, resolution, and interface, making the ADS7841ES/2K5G4 a viable replacement candidate for the ADS7841E. The primary distinction lies in packaging and ordering format, so design validation should confirm footprint, reel configuration, and any grade-specific specifications before substitution.
Resolution and Architecture
High match
Channel Count
High match
Interface Type
High match
Package and Ordering Format
Validation required
Parts at a glance
Part B
ADS7841ES/2K5G4
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 7893 PCS
- Package
- SSOP-16
- Series
- 데이터 수집 - 아날로그 변환기(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 | ADS7841ES/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the smallest analog voltage change the ADC can distinguish; identical resolution means equivalent measurement granularity. |
| Number of Channels | 4 (single-ended) / 2 (differential) | 4 (single-ended) / 2 (differential) | Defines how many analog inputs can be sampled; matching channel count ensures the same input multiplexing capability. |
| Sampling Rate | 200 kSPS | 200 kSPS | Sets the maximum conversion throughput; identical rate means the same signal bandwidth can be captured. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Determines compatibility with system power rails; matching range allows drop-in use in the same supply environment. |
| Interface Type | SPI (serial) | SPI (serial) | Defines the digital communication protocol; identical interface ensures the same host controller connection works. |
| Package / Mounting | 16-SSOP (Surface Mount) | 16-SSOP (Surface Mount) | Affects PCB footprint and assembly; matching package allows the same board layout to be used. |
| Packaging / Ordering Format | Tube / Tray | Tape & Reel (2,500 units) | Determines how parts are supplied for manufacturing; reel packaging suits automated high-volume assembly while tube suits low-volume or prototyping. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the environmental limits for reliable operation; matching range ensures equivalent thermal robustness. |
| Reference Input | External (VREF) | External (VREF) | Sets the full-scale conversion range; identical external reference requirement means the same reference circuit can be reused. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7841E | ADS7841ES/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 are the key differences between the ADS7841E and the ADS7841ES/2K5G4?
Both devices are 12-bit, 4-channel, 200-kSPS successive-approximation analog-to-digital converters from Texas Instruments with the same core architecture and functional pinout. The primary difference is the ordering and packaging format: the ADS7841E is supplied in a 16-pin SSOP (DBQ) tube/rail format, while the ADS7841ES/2K5G4 is the same die in a 16-pin SSOP supplied on a 2,500-piece tape-and-reel (the "2K5" suffix denotes reel quantity and "G4" denotes Green/RoHS-compliant lead finish).
Are the ADS7841E and ADS7841ES/2K5G4 electrically and functionally interchangeable?
Yes. Both are the same ADS7841 converter in the same 16-pin SSOP package with identical pinout, supply range (2.7 V to 5.25 V), 12-bit resolution, 4 single-ended or 2 differential input channels, 200-kSPS throughput, and SPI/QSPI/Microwire-compatible serial interface. They differ only in shipping format and lead-finish designation, so they are interchangeable in a given design.
What is the difference between the "E" and "ES" suffixes in these part numbers?
The "E" and "ES" suffixes both designate the 16-pin SSOP (DBQ) package for the ADS7841. The additional "S" in ADS7841ES is part of the ordering-code variant associated with the tape-and-reel shipment (2K5) and the G4 Green designation; the silicon and package outline are the same as the ADS7841E.
What does the "2K5G4" suffix mean on the ADS7841ES/2K5G4?
"2K5" indicates the device is supplied on a 2,500-piece tape-and-reel for automated assembly. "G4" is the Texas Instruments Green designation indicating RoHS-compliant, lead-free (NiPdAu) lead finish. The base part remains a 12-bit, 200-kSPS, 4-channel SAR ADC in a 16-pin SSOP.
Do both parts support the same supply voltage and reference configuration?
Yes. Both operate from a single supply of 2.7 V to 5.25 V and support an external reference (VREF) plus a separate analog supply (VCC) arrangement, with the reference input range specified from 0.1 V to VCC. The internal clock and conversion timing are identical because the silicon is the same.
Which part should be selected for high-volume automated PCB assembly?
The ADS7841ES/2K5G4 is the appropriate choice for high-volume SMT lines because it is provided on a 2,500-piece tape-and-reel with a defined pick-and-place orientation, whereas the ADS7841E is typically supplied in tube/rail format. Both share the same 16-pin SSOP land pattern, so no PCB redesign is required to switch between them.
Are both parts RoHS compliant and lead-free?
The ADS7841ES/2K5G4 carries the "G4" Green designation, indicating RoHS-compliant, lead-free (NiPdAu) termination finish. The ADS7841E is available in both standard and Green (G4) orderable variants; designers should confirm the specific orderable suffix on the datasheet or distributor listing to verify the lead finish for a given lot.
Can the ADS7841E and ADS7841ES/2K5G4 be used in the same socket without firmware changes?
Yes. Because both are the same ADS7841 die in the same 16-pin SSOP package with identical pin functions and serial-interface protocol (24-clock conversion/control word, SPI/QSPI/Microwire compatible), no firmware or layout change is needed when substituting one for the other.