Part A
ADS8320EB/2K5
Texas Instruments
- Lifecycle
- Active
- Stock
- 3123 PCS
- Package
- VSSOP-8
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8320EB/2K5 is a functionally compatible replacement candidate for the ADS8320E/2K5, as both parts share the same 16-bit SAR ADC architecture, SPI interface, SOT-23-6 package, and 2.7 V to 5.5 V supply range. The EB grade offers a tighter maximum integral nonlinearity specification, making it suitable for higher-accuracy applications while remaining a drop-in fit for the same footprint and pinout.
Resolution and Architecture
High match
Package and Pinout
High match
Supply Voltage Range
High match
INL Accuracy Grade
Validation required
Parts at a glance
Part B
ADS8320E/2K5
Texas Instruments
- Lifecycle
- Active
- Stock
- 4183 PCS
- Package
- VSSOP-8
- 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 | ADS8320E/2K5 | ADS8320EB/2K5 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both converters provide the same 16-bit resolution, so measurement granularity is identical. |
| 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 without changing the input multiplexing scheme. |
| Interface Type | SPI (serial) | SPI (serial) | Both use the same serial interface, so firmware and digital host connections remain compatible. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical supply range means the same power rail can be used for either device. |
| Package / Mounting | 8-VSSOP, surface mount | 8-VSSOP, surface mount | Same package and footprint allow drop-in board replacement without layout changes. |
| INL (Integral Nonlinearity) | ±2 LSB (typ) | ±1.5 LSB (typ) | The EB grade offers tighter linearity, which improves absolute accuracy in precision measurement applications. |
| DNL (Differential Nonlinearity) | ±1 LSB (typ) | ±0.5 LSB (typ) | Better DNL in the EB grade reduces missing-code risk and improves monotonicity for critical conversions. |
| Offset Error | ±2 mV (max) | ±1 mV (max) | Lower offset error in the EB grade reduces calibration burden and improves low-level signal accuracy. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both share the same temperature range, so environmental qualification is unchanged between grades. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8320EB/2K5 | ADS8320E/2K5 |
|---|---|---|
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Active |
| 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 is the difference between the ADS8320E/2K5 and the ADS8320EB/2K5?
Both are 16-bit, 100-kSPS micropower sampling analog-to-digital converters from Texas Instruments in an 8-pin VSSOP (DGK) package and are supplied on 2,500-unit tape-and-reel. The suffix difference is a grade/ordering designation: the ADS8320E/2K5 is the standard grade, while the ADS8320EB/2K5 is the higher-grade variant. Designers should confirm the exact grade-specific specifications (such as offset, gain, and linearity limits) in the official TI datasheet before selecting between them.
Are the ADS8320E/2K5 and ADS8320EB/2K5 pin-compatible and package-compatible?
Yes. Both devices are offered in the same 8-pin VSSOP (DGK) package with the same pinout, so they are footprint-compatible on a PCB. Electrical grade differences, not package differences, are the relevant consideration when substituting one for the other.
What are the key shared specifications of the ADS8320E/2K5 and ADS8320EB/2K5?
Both are 16-bit successive-approximation ADCs with a sampling rate of up to 100 kSPS, a single 2.7 V to 5.5 V supply, and a serial SPI-compatible interface. They are specified for micropower operation and are available in the 8-pin VSSOP package. Refer to the TI datasheet for the complete electrical characteristics and grade-specific limits.
Can the ADS8320EB/2K5 be used as a drop-in replacement for the ADS8320E/2K5?
Because both parts share the same package, pinout, and core function, the higher-grade ADS8320EB/2K5 can generally serve in place of the standard-grade ADS8320E/2K5 where the tighter grade specifications are acceptable. The reverse substitution should only be made after verifying that the standard grade meets the design's accuracy requirements. Always validate against the TI datasheet for the specific grade.
What does the "/2K5" suffix mean on both part numbers?
The "/2K5" suffix indicates the ordering quantity and packaging: 2,500 units supplied on tape-and-reel. It does not change the electrical grade of the device; the grade is denoted by the "E" versus "EB" designation in the base part number.
What interface and supply requirements do these ADCs have?
Both devices use a serial interface compatible with SPI, QSPI, and Microwire, and operate from a single supply of 2.7 V to 5.5 V. They are intended for micropower, portable, and battery-operated data-acquisition applications. Consult the TI datasheet for detailed timing and reference requirements.
Which grade should be selected for a new design, ADS8320E/2K5 or ADS8320EB/2K5?
Selection depends on the accuracy budget of the application. The ADS8320EB/2K5 offers the higher grade with tighter specified limits, while the ADS8320E/2K5 is the standard grade. Compare the grade-specific offset, gain, and linearity specifications in the TI datasheet against the system error budget to make the appropriate choice.