Part A
ADS7841E
Texas Instruments
- Lifecycle
- Active
- Stock
- 5990 PCS
- Package
- SSOP-16
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7841E and ADS7841EG4 are functionally equivalent 12-bit 4-channel serial ADC devices from Texas Instruments, differing only in packaging and ordering conventions. The EG4 suffix denotes a lead-free/RoHS-compliant variant of the same silicon, making the ADS7841EG4 a direct functional replacement for the ADS7841E in most designs, subject to verification of the specific package and environmental requirements.
Resolution and Architecture
High match
Channel Count and Input Type
High match
Package Type
Validation required
Environmental Compliance
Validation required
Parts at a glance
Part B
ADS7841EG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8773 PCS
- Package
- SSOP-16
- Series
- Data Acquisition - Analog to Digital Converters (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 | ADS7841EG4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the number of discrete levels the ADC can resolve; 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 count ensures the same input flexibility. |
| Sampling Rate | 200 kSPS | 200 kSPS | Sets the maximum conversion throughput; identical rate means the same signal bandwidth can be captured. |
| Interface Type | SPI (Serial) | SPI (Serial) | Determines the digital communication protocol with the host; matching interface ensures drop-in compatibility. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Defines the operating voltage range; identical range allows use in the same power domain. |
| Architecture | SAR | SAR | Successive-approximation architecture affects latency and power; matching architecture supports equivalent behavior. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Specifies the environmental range for reliable operation; identical range means the same application environments are supported. |
| Package / Mounting | 16-SSOP (Surface Mount) | 16-SSOP (Surface Mount) | Determines PCB footprint and assembly; matching package allows the same board layout. |
| Packaging / Ordering Suffix | Tube / standard ordering | G4 (green/RoHS-compliant) ordering variant | The G4 suffix denotes a lead-free/RoHS-compliant version; functionally equivalent but differs in environmental compliance and ordering. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7841E | ADS7841EG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| 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 the ADS7841E and the ADS7841EG4?
The ADS7841E and ADS7841EG4 are functionally identical 12-bit, 4-channel serial ADC devices from Texas Instruments. The "G4" suffix denotes a lead-free (Pb-free) package finish compliant with RoHS, while the base ADS7841E part number may refer to the standard package variant. Both share the same electrical specifications, pinout, and SSOP-16 package; the distinction is the environmental/lead-finish designation.
Are the ADS7841E and ADS7841EG4 pin-compatible?
Yes. Both devices are offered in the same 16-pin SSOP (DBQ) package with identical pin assignments, so they are pin-to-pin compatible on the PCB. The only difference is the package finish/ordering suffix, not the pinout or footprint.
Do the ADS7841E and ADS7841EG4 have the same electrical specifications?
Yes. Both are 12-bit successive-approximation ADCs with 4 single-ended or 2 differential inputs, a serial SPI/QSPI/Microwire-compatible interface, and operate from a single 2.7 V to 5.25 V supply. Resolution, throughput (up to 200 kSPS), and reference requirements are identical between the two orderable variants.
Which part should be selected for RoHS-compliant designs?
The ADS7841EG4 should be selected when a lead-free, RoHS-compliant package finish is required. The "G4" suffix specifically indicates the Pb-free (Green) package option from Texas Instruments. Designers should confirm the exact orderable part number against the current datasheet and the manufacturer's product status before release.
Can the ADS7841E and ADS7841EG4 be used interchangeably in an existing design?
Because both share the same die, package, pinout, and electrical characteristics, they are generally interchangeable in function. However, substitution should be validated against the specific orderable part's datasheet and any customer or regulatory requirements (e.g., lead-finish/RoHS compliance) before use in production.
What interface do the ADS7841E and ADS7841EG4 use?
Both devices use a serial interface compatible with SPI, QSPI, and Microwire protocols, allowing direct connection to most microcontrollers and DSPs. The interface supports single-ended and differential input configurations and is controlled via chip-select, clock, and data lines.
Are the ADS7841E and ADS7841EG4 still recommended for new designs?
Designers should verify the current product lifecycle status (active, NRND, or obsolete) for each specific orderable part number on the Texas Instruments website or an authorized distributor before committing to a new design. Lifecycle status can differ between orderable variants even when the silicon is identical.