Part A
ADS8326IBDGKR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3322 PCS
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8326IBDGKR is a viable functional replacement candidate for the ADS8320E/2K5, sharing the same 16-bit SAR architecture, SPI interface, and single-supply operating range, though the differing package footprint and reduced maximum sampling rate require validation before direct substitution.
Resolution and Architecture
High match
Digital Interface
High match
Package Type
Validation required
Sampling Rate
Validation required
Parts at a glance
Part B
ADS8320E/2K5
Texas Instruments
- Lifecycle
- Active
- Stock
- 4183 PCS
- Package
- VSSOP-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 | ADS8320E/2K5 | ADS8326IBDGKR | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both are 16-bit SAR ADCs, so resolution is equivalent and not a differentiator for substitutability. |
| Sampling Rate | 100 kSPS | 250 kSPS | The ADS8326 offers a higher maximum throughput, which matters for faster signal acquisition and higher-bandwidth applications. |
| Supply Voltage (Analog) | 2.7 V to 5.25 V | 2.7 V to 5.5 V | Slightly wider analog supply range on the ADS8326 provides more headroom for 5 V systems and margin against supply variation. |
| Input Type | Pseudo-differential, single-ended | Pseudo-differential, single-ended | Both accept pseudo-differential single-ended inputs, so signal conditioning requirements are similar. |
| Interface | SPI-compatible serial | SPI-compatible serial | Identical serial interface simplifies drop-in replacement at the digital communication level. |
| Package | 8-pin VSSOP (MSOP) | 8-pin VSSOP (MSOP) | Same package footprint allows direct PCB substitution without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Equivalent industrial temperature range means both suit the same environmental conditions. |
| Power Consumption (Typical) | ~1.8 mW at 100 kSPS, 5 V | ~4.5 mW at 250 kSPS, 5 V | The ADS8326 draws more power due to higher throughput; power-sensitive designs may favor the ADS8320. |
| Reference Input | External reference | External reference | Both require an external voltage reference, so reference circuitry can be reused across designs. |
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 | ADS8326IBDGKR | ADS8320E/2K5 |
|---|---|---|
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Active |
| Base Product Number | ADS8326 | - |
| Number of Bits | 16 | 16 |
| Sampling Rate (Per Second) | 250k | - |
| 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 | - |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 3.6V, 5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V, 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | - |
| Packaging | Tape & Reel (TR) | - |
| Sampling Rate(Per Second) | - | 100k |
| Number of A/D Converters | - | 1 |
Frequently asked questions
What are the key differences between the ADS8320E/2K5 and the ADS8326IBDGKR?
The ADS8320E/2K5 is a 16-bit, 100-kSPS micropower SAR ADC in an 8-pin VSSOP package, while the ADS8326IBDGKR is a 16-bit, 250-kSPS SAR ADC in an 8-pin VSSOP package. The ADS8326 offers a higher maximum sampling rate (250 kSPS vs 100 kSPS) and a wider supply range, whereas the ADS8320 is optimized for lower power consumption at lower throughput.
Are the ADS8320E/2K5 and ADS8326IBDGKR pin-compatible?
Both devices are offered in an 8-pin VSSOP (DGK) package with the same pin count, but designers must verify the pin function assignments against the respective datasheets before considering a drop-in replacement, as pin definitions and reference/supply connections can differ between the two families.
What is the maximum sampling rate of each device?
The ADS8320E/2K5 supports a maximum sampling rate of 100 kSPS, while the ADS8326IBDGKR supports a maximum sampling rate of 250 kSPS, per the respective Texas Instruments datasheets.
How do the supply voltage requirements compare?
The ADS8320 operates from a single 2.7 V to 5.5 V supply, and the ADS8326 operates from a single 2.7 V to 5.5 V supply as well; both are specified for 2.7 V to 5.5 V operation, so the supply range is comparable between the two parts.
How does power consumption compare between the two ADCs?
The ADS8320 is specified for very low power operation (micropower class) at its 100-kSPS rate, while the ADS8326 draws proportionally more current to support its higher 250-kSPS throughput. Exact quiescent and active current figures should be taken from the respective datasheet electrical characteristics tables.
What interface do these ADCs use?
Both the ADS8320 and ADS8326 use a serial SPI-compatible interface for communication with a host controller, allowing connection to microcontrollers and DSPs with standard SPI peripherals.
What is the resolution and architecture of both devices?
Both the ADS8320E/2K5 and ADS8326IBDGKR are 16-bit successive-approximation-register (SAR) analog-to-digital converters, providing 16-bit resolution with no missing codes as specified in their datasheets.
Can the ADS8326IBDGKR be used as a higher-speed replacement for the ADS8320E/2K5?
The ADS8326 provides a higher maximum sampling rate (250 kSPS vs 100 kSPS), but a substitution requires validating supply decoupling, reference configuration, timing, and PCB layout against both datasheets, since the devices are separate product families and are not guaranteed to be interchangeable without design verification.