Part A
ADS8320EB/2K5
Texas Instruments
- Lifecycle
- Active
- Stock
- 3123 PCS
- Package
- VSSOP-8
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8320EB/2K5 and ADS8320E/2K5G4 are functionally equivalent 16-bit micro-power sampling ADCs sharing identical core specifications, pinout, and package, making them interchangeable for most designs; the only meaningful distinction is the reel/ordering suffix and the G4 lead-finish designation, which should be confirmed against your assembly and compliance requirements.
Resolution and Sample Rate
High match
Package and Pinout
High match
Supply Voltage and Interface
High match
Ordering Variant and Lead Finish
Validation required
Parts at a glance
Part B
ADS8320E/2K5G4
Texas Instruments
- Lifecycle
- Active
- Stock
- 4810 PCS
- Package
- TSSOP-8
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | ADS8320EB/2K5 | ADS8320E/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both converters provide the same 16-bit resolution, so measurement precision is equivalent. |
| Sampling Rate | 100 kSPS | 100 kSPS | Identical maximum throughput means either part supports the same signal bandwidth and timing budget. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Same single-channel architecture allows direct substitution in single-sensor acquisition designs. |
| Interface Type | SPI (serial) | SPI (serial) | Matching serial interface ensures the same host controller firmware and wiring can be reused. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Same supply range means both parts operate in identical power rails and system voltage domains. |
| Package / Mounting | 8-pin VSSOP, surface mount | 8-pin VSSOP, surface mount | Identical package and footprint allow drop-in board replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature rating ensures equivalent environmental robustness for industrial applications. |
| Reference Input | External | External | Both require an external voltage reference, so the same reference circuit design applies to either part. |
| Power Consumption (typical) | ~1.8 mW at 100 kSPS, 5 V | ~1.8 mW at 100 kSPS, 5 V | Equivalent power draw means thermal and supply budgeting remain unchanged when substituting. |
| Packaging / Ordering Option | Tape and reel (2K5) | Tape and reel (2K5), green/RoHS G4 variant | Both are supplied in tape-and-reel for automated assembly; the G4 suffix denotes a green/RoHS-compliant version, which matters for compliance-driven BOMs. |
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 | ADS8320EB/2K5 | ADS8320E/2K5G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 100k |
| Number of Inputs | 1 | 1 |
| Input Type | Pseudo-Differential, Single Ended | Pseudo-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 ~ 3.3V, 5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.3V, 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS8320EB/2K5 and the ADS8320E/2K5G4?
Both parts are the same ADS8320 16-bit, 100-kSPS micropower sampling analog-to-digital converter from Texas Instruments. The ADS8320EB/2K5 is supplied in a VSSOP-8 (DGK) package and is specified over the -40°C to +85°C temperature range. The ADS8320E/2K5G4 is the same die in the same VSSOP-8 package but is ordered under the "G4" green/RoHS-compliant ordering suffix. The core electrical specifications (resolution, sample rate, supply range, and interface) are identical; the difference is the ordering/part-number suffix and associated documentation.
Are the ADS8320EB/2K5 and ADS8320E/2K5G4 functionally interchangeable?
Yes. Both are the ADS8320 16-bit SAR ADC in the VSSOP-8 package with the same pinout and the same SPI-compatible serial interface. Because the silicon and package are the same, they are functionally interchangeable in a design, provided the ordering suffix and RoHS/green compliance requirements of the target application are satisfied.
What is the resolution and maximum sample rate of these devices?
Both the ADS8320EB/2K5 and ADS8320E/2K5G4 are 16-bit successive-approximation-register (SAR) ADCs with a maximum sampling rate of 100 kSPS. These parameters are common to the ADS8320 family and are specified in the Texas Instruments datasheet.
What supply voltage and reference requirements apply to these ADCs?
The ADS8320 family operates from a single 2.7 V to 5.5 V supply. The external reference voltage is applied to the VREF pin and must be within the specified range relative to the supply; the device supports a reference voltage up to the supply voltage. Designers should confirm exact VREF limits and the corresponding input range in the TI datasheet for the specific operating conditions.
What package and pin configuration do these parts use?
Both the ADS8320EB/2K5 and ADS8320E/2K5G4 are offered in the 8-pin VSSOP (DGK) package. The pinout includes the analog input, reference, supply, ground, and the serial interface signals (CS/SHDN, DCLOCK, DOUT). Because the package and pinout are identical, PCB land patterns are the same for both orderable part numbers.
What does the "G4" suffix on the ADS8320E/2K5G4 indicate?
The "G4" suffix is a Texas Instruments ordering suffix denoting green/RoHS-compliant packaging and material content. It does not change the electrical function of the device. The ADS8320EB/2K5 and ADS8320E/2K5G4 therefore differ in ordering suffix and compliance documentation rather than in converter performance.
What serial interface do these ADCs use, and how do they connect to a microcontroller?
Both devices use an SPI-compatible serial interface with chip-select/shutdown (CS/SHDN), serial clock (DCLOCK), and data output (DOUT) pins. They connect to a host microcontroller or DSP using standard SPI mode, allowing the 16-bit conversion result to be clocked out serially. The interface timing and clock polarity requirements are specified in the TI datasheet.
Which applications are these ADCs typically used in?
The ADS8320 family is a micropower 16-bit SAR ADC suited to battery-powered and portable instrumentation, data acquisition systems, industrial process control, and medical instrumentation where low power and 16-bit resolution at up to 100 kSPS are required. Both orderable part numbers share these application characteristics because they are the same converter.