Part A
ADS8344E
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 2647 個数
- Package
- SSOP-20
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8344E and ADS8344EBG4 are functionally equivalent 16-bit, 4-channel serial ADC devices from the same manufacturer family, sharing identical core specifications. The BG4 suffix denotes a lead-free (RoHS-compliant) package variant, making the ADS8344EBG4 a suitable drop-in replacement for the ADS8344E in most applications, provided the lead-free package finish is acceptable for the target assembly process.
Resolution and Architecture
High match
Channel Count and Input Type
High match
Package Type and Pinout
High match
Package Finish and Compliance
Validation required
Parts at a glance
Part B
ADS8344EBG4
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 4650 個数
- Package
- SSOP-20
- Series
- データ取得 - アナログ/デジタルコンバータ (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 | ADS8344E | ADS8344EBG4 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Determines the smallest analog signal change the ADC can resolve; identical resolution means equivalent measurement precision. |
| Number of Input Channels | 8 single-ended / 4 differential | 8 single-ended / 4 differential | Defines how many analog signals can be measured; matching channel count ensures the same system-level input capability. |
| Sampling Rate | 100 kSPS | 100 kSPS | Sets the maximum conversion throughput; identical rates mean 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 the system power rail; matching ranges allow direct substitution without supply redesign. |
| Interface Type | SPI (serial) | SPI (serial) | Defines the digital communication protocol; identical interface ensures the same host controller connection works. |
| Package / Case | 20-SSOP | 20-SSOP | Determines PCB footprint and assembly compatibility; matching packages allow drop-in replacement. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Specifies the environmental range for reliable operation; identical ranges ensure the same application environments are supported. |
| Packaging / Ordering Suffix | Tube / standard orderable | G4 (green/RoHS-compliant) variant | The G4 suffix denotes a lead-free/RoHS-compliant version; this affects compliance and procurement but not electrical function. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8344E | ADS8344EBG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 100k |
| Number of Inputs | 4, 8 | 4, 8 |
| 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 | 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 |
Frequently asked questions
What is the difference between the ADS8344E and the ADS8344EBG4?
The ADS8344E and ADS8344EBG4 are functionally identical 16-bit, 8-channel serial-output ADCs from Texas Instruments. The primary difference is the ordering and packaging designation: the ADS8344E is supplied in a standard tube/rail format in a 20-pin SSOP (DBQ) package, while the ADS8344EBG4 is the same die and package delivered in Green (RoHS-compliant, lead-free) tape-and-reel form for automated assembly. The "G4" suffix denotes the green/RoHS-compliant material set and tape-and-reel packaging option.
Are the ADS8344E and ADS8344EBG4 electrically and functionally interchangeable?
Yes. Both devices share the same 16-bit SAR ADC core, 8 single-ended or 4 differential input channels, SPI/QSPI/Microwire-compatible serial interface, and specified 2.7 V to 5.25 V supply range. Because they are the same silicon in the same 20-pin SSOP package, they are electrically and functionally interchangeable in a given design; the difference is limited to RoHS material compliance and shipping format.
What is the resolution and sampling rate of the ADS8344E and ADS8344EBG4?
Both devices provide 16-bit resolution with a maximum throughput of 100 kSPS (100,000 samples per second). The internal successive-approximation register architecture and sample-and-hold circuit support this rate across the full specified supply range.
What input configurations do the ADS8344E and ADS8344EBG4 support?
Both parts offer 8 single-ended inputs or 4 differential input pairs, selectable via the serial control word. The input multiplexer is software-configurable, allowing channel selection and single-ended/differential mode changes on a per-conversion basis without external hardware reconfiguration.
What supply voltage range and reference requirements apply to the ADS8344E and ADS8344EBG4?
Both devices operate from a single analog supply of 2.7 V to 5.25 V. They require an external reference voltage (VREF) applied to the REF pin; the reference sets the full-scale input range and must be stable and within the device's specified reference input limits as documented in the datasheet. The digital supply (VDD) and analog supply are shared in this single-supply architecture.
What package and pinout do the ADS8344E and ADS8344EBG4 use?
Both are offered in a 20-pin SSOP (Shrink Small Outline Package, TI package code DBQ). The pinout is identical between the two orderable part numbers, so PCB land patterns and footprint designs are the same. Designers should confirm the exact package drawing in the current TI datasheet for mechanical tolerances.
Does the "G4" suffix on the ADS8344EBG4 indicate a different performance grade?
No. The G4 suffix in TI nomenclature denotes Green (RoHS-compliant, lead-free/Br-free) material content and does not indicate a different accuracy, speed, or temperature grade. Both the ADS8344E and ADS8344EBG4 are specified over the same industrial temperature range and share the same electrical specifications; the G4 designation addresses environmental compliance and packaging format only.
Which part should be selected for a RoHS-compliant, high-volume automated assembly line?
The ADS8344EBG4 is the appropriate choice for RoHS-compliant production and automated pick-and-place assembly, since it is supplied in Green tape-and-reel packaging. The ADS8344E remains suitable for prototyping, tube-fed assembly, or legacy designs where non-G4 material content is acceptable. Both share identical electrical performance, so selection is driven by compliance and packaging requirements rather than by ADC specifications.