Part A
ADS8344EB
Texas Instruments
- Lifecycle
- Active
- Stock
- 6770 PCS
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8344EB and ADS8341E/2K5G4 are both 16-bit successive-approximation ADCs in a 20-pin SSOP package with a serial interface, making them functionally comparable for many designs. However, they differ in channel count and input configuration, so the ADS8341E/2K5G4 is not a direct drop-in substitute for the ADS8344EB without verifying the input multiplexer requirements and reference configuration in the target application.
Resolution
Validation required
Channel Count
Not compatible
Package Type
High match
Interface Type
High match
Parts at a glance
Part B
ADS8341E/2K5G4
Texas Instruments
- Lifecycle
- Active
- Stock
- 9351 PCS
- Package
- SSOP-16
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | ADS8344EB | ADS8341E/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 16 | 16 | Both are 16-bit ADCs, so resolution is equivalent and not a differentiator for substitutability. |
| Number of input channels | 8 (single-ended) / 4 (differential) | 4 (single-ended) / 2 (differential) | Channel count determines how many signals can be multiplexed into one ADC; the ADS8344EB supports twice as many inputs. |
| Sampling rate (max) | 100 kSPS | 200 kSPS | Maximum throughput affects the bandwidth of signals that can be digitized; the ADS8341E is twice as fast. |
| Supply voltage (analog and digital) | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Both support the same wide supply range, allowing direct drop-in compatibility in most 3 V or 5 V systems. |
| Interface type | SPI-compatible serial (QSPI, Microwire, DSP) | SPI-compatible serial (QSPI, Microwire, DSP) | Identical serial interface simplifies firmware and hardware migration between the two parts. |
| Package | 20-pin SSOP (DBQ) | 16-pin SSOP (DBQ) | Different pin counts and footprints mean the PCB layout must be redesigned; they are not pin-compatible. |
| Input type | Single-ended and pseudo-differential | Single-ended and pseudo-differential | Same input configuration options support similar sensor and signal-conditioning topologies. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature range means both are suitable for the same environmental conditions. |
| Power consumption (typical) | ~1.5 mW at 5 V, 100 kSPS | ~2.5 mW at 5 V, 200 kSPS | Power budget differs; the faster ADS8341E consumes more, which matters in low-power or battery-operated designs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8344EB | ADS8341E/2K5G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | - | 100k |
| Number of Inputs | 4, 8 | 2, 4 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | SPI | SPI |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | - | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.6V, 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.6V, 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Base Product Number | ADS8344 | - |
| Sampling Rate (Per Second) | 100k | - |
| Number of A / D Converters | 1 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Bulk, Tube | - |
Frequently asked questions
What are the key differences between the ADS8344EB and the ADS8341E/2K5G4?
The ADS8344EB is a 16-bit, 8-channel successive-approximation ADC with a serial interface, while the ADS8341E/2K5G4 is a 16-bit, 4-channel successive-approximation ADC with a serial interface. The ADS8344EB provides twice the input channel count of the ADS8341E/2K5G4, while both share a similar 16-bit SAR architecture and serial interface family from Texas Instruments.
Do the ADS8344EB and ADS8341E/2K5G4 have the same resolution and architecture?
Yes. Both devices are 16-bit successive-approximation register (SAR) analog-to-digital converters with a serial interface, as specified in their respective Texas Instruments datasheets.
How do the input channel counts of the ADS8344EB and ADS8341E/2K5G4 compare?
The ADS8344EB provides 8 input channels, whereas the ADS8341E/2K5G4 provides 4 input channels. Designs requiring more single-ended or differential input pairs should account for this difference when selecting between the two parts.
Are the ADS8344EB and ADS8341E/2K5G4 available in the same package type?
Both devices are offered in a 16-pin SSOP (Shrink Small Outline Package) as documented in their Texas Instruments datasheets. Designers should still verify the specific package suffix and land pattern against the manufacturer datasheet for the exact ordering code.
Can the ADS8344EB and ADS8341E/2K5G4 share the same serial interface protocol?
Both devices use a serial interface compatible with SPI/QSPI/MICROWIRE protocols as described in their Texas Instruments datasheets. However, the command and control word formats differ because the channel count differs, so firmware must be adapted accordingly.
What is the significance of the "2K5G4" suffix on the ADS8341E/2K5G4?
The "2K5G4" suffix denotes a Texas Instruments tape-and-reel packaging and ordering variant (2,500-unit reel, G4 lead finish/qualification designation) for the ADS8341E. It does not change the electrical specifications of the ADS8341E device itself.
Can the ADS8344EB be used as a drop-in replacement for the ADS8341E/2K5G4?
No. Although both are 16-bit SAR ADCs in 16-pin SSOP packages with serial interfaces, the ADS8344EB has 8 input channels versus 4 on the ADS8341E/2K5G4, and the control word formats differ. A direct drop-in replacement is not supported without validating pin functions, command format, and channel configuration against the manufacturer datasheets.