Part A
ADS8326IBDGKR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3322 PCS
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8326IBDGKR is a viable functional replacement candidate for the ADS8320EB/2K5 in many designs, as both are 16-bit SAR ADCs with comparable resolution and sampling capability. However, the two devices differ in package footprint, supply voltage range, and interface timing characteristics, so schematic and layout validation is required before substitution. Designers should confirm SPI timing margins, supply rail compatibility, and PCB land pattern adaptation prior to adopting the ADS8326IBDGKR as a drop-in alternative.
Resolution
High match
Sample Rate
High match
Package Type
Validation required
Supply Voltage Range
Validation required
Parts at a glance
Part B
ADS8320EB/2K5
Texas Instruments
- Lifecycle
- Active
- Stock
- 3123 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 | ADS8320EB/2K5 | ADS8326IBDGKR | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both are 16-bit 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 requirements. |
| Input Type | Single-ended | Pseudo-differential | Input configuration affects how the sensor or signal source must be connected and common-mode rejection behavior. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.5 V | Slightly wider supply range on the ADS8326 provides more headroom for 5 V systems and margin against supply variation. |
| Interface | SPI (serial) | SPI (serial) | Both use a serial SPI-compatible interface, so digital host connectivity is compatible. |
| Package | VSSOP-8 (MSOP-8) | VSSOP-8 (MSOP-8) | Identical package footprint allows drop-in PCB compatibility without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ranges ensure equivalent environmental robustness for industrial applications. |
| Power Consumption | ~1.8 mW at 100 kSPS (5 V) | ~4.5 mW at 250 kSPS (5 V) | Higher throughput on the ADS8326 comes with higher power draw, which matters for low-power or battery-operated designs. |
| Reference Input | External reference | External reference | Both require an external voltage reference, so reference design considerations are equivalent. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8326IBDGKR | ADS8320EB/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 | 2.7V ~ 3.3V, 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.3V, 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 ADS8320EB/2K5 and the ADS8326IBDGKR?
The ADS8320EB/2K5 is a 16-bit, 100-kSPS micropower SAR ADC in an 8-pin VSSOP package, specified over the -40°C to +85°C temperature range. The ADS8326IBDGKR is a 16-bit, 250-kSPS micropower SAR ADC in an 8-pin VSSOP package, specified over the -40°C to +85°C temperature range. The primary differences are sampling rate (100 kSPS vs 250 kSPS) and the corresponding power/speed tradeoff.
Are the ADS8320EB/2K5 and ADS8326IBDGKR pin-compatible?
Both devices are offered in an 8-pin VSSOP (DGK) package with the same pin count and function assignment per their respective datasheets, which supports pin-compatible board layouts. However, designers should confirm the land pattern and pin functions against the specific datasheet revision before substituting.
What is the maximum sampling rate of each device?
The ADS8320EB/2K5 supports a maximum sampling rate of 100 kSPS. The ADS8326IBDGKR supports a maximum sampling rate of 250 kSPS.
What is the resolution and architecture of these ADCs?
Both the ADS8320EB/2K5 and the ADS8326IBDGKR are 16-bit successive-approximation-register (SAR) analog-to-digital converters.
What supply voltage range do these ADCs require?
Both devices operate from a single supply in the 2.7 V to 5.5 V range, per their manufacturer datasheets.
How do the power consumption figures compare?
Both are micropower SAR converters designed for low-power operation. The ADS8326IBDGKR, with its higher 250-kSPS throughput, draws proportionally more current at full rate than the 100-kSPS ADS8320EB/2K5. Designers should refer to the respective datasheet supply-current specifications at the intended supply voltage and sampling rate for exact values.
What is the input interface type for these ADCs?
Both the ADS8320EB/2K5 and the ADS8326IBDGKR use a serial SPI-compatible interface for communication with a host controller.
Can the ADS8326IBDGKR directly replace the ADS8320EB/2K5 in an existing design?
Because both are 16-bit SAR ADCs in the same 8-pin VSSOP package with SPI interfaces, the ADS8326IBDGKR can be considered a higher-speed alternative. However, direct replacement requires validating timing, reference requirements, and power budget against the ADS8326IBDGKR datasheet, since the higher 250-kSPS rate changes the digital timing and current consumption relative to the 100-kSPS ADS8320EB/2K5.