Part A
ADS7828EIPWRQ1
德州儀器
- Lifecycle
- Active
- Stock
- 5341 件
- Package
- TSSOP-16
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Not a drop-in replacement
The ADS7828EIPWRQ1 and ADS7823EB/250G4 differ in interface protocol, channel configuration, and package footprint, so they are not functionally interchangeable in the same design without circuit and layout changes.
Different interface protocol
Different channel count
Different package footprint
Different input configuration
Parts at a glance
Part B
ADS7823EB/250G4
德州儀器
- Lifecycle
- Active
- Stock
- 7089 件
- Package
- TSSOP-8
- Series
- 資料獲取-模數轉換器（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 | ADS7828EIPWRQ1 | ADS7823EB/250G4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide 12-bit resolution, so measurement precision is equivalent. |
| Number of Input Channels | 8 single-ended / 4 differential | 1 single-ended | Channel count determines how many signals can be monitored; the ADS7828 supports multiplexed multi-channel acquisition while the ADS7823 handles a single input. |
| Input Type | Single-ended / Pseudo-differential | Single-ended | Differential capability affects noise immunity and the ability to measure floating or bipolar signals. |
| Interface | I2C | I2C | Both use I2C, so bus compatibility and firmware protocol are similar. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Matching supply ranges allow either part to operate from the same system rail. |
| Package / Mounting | 16-TSSOP (surface mount) | 8-VSSOP (surface mount) | Different package footprints require PCB layout changes and affect board space and assembly. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical temperature ratings mean both suit the same environmental conditions. |
| Automotive Qualification | AEC-Q100 qualified | Not AEC-Q100 qualified | Automotive qualification is required for use in automotive and other high-reliability applications. |
| Sampling Rate | 50 kSPS | 50 kSPS | Equal throughput supports similar signal bandwidth and update-rate requirements. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7828EIPWRQ1 | ADS7823EB/250G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 50k | 50k |
| Number of Inputs | 8 | 1 |
| Input Type | Differential, Single Ended | Single Ended |
| Data Interface | I²C | I²C |
| Configuration | MUX-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, Internal | 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 |
| Series | Automotive, AEC-Q100 | - |
Frequently asked questions
What are the key differences between the ADS7828EIPWRQ1 and the ADS7823EB/250G4?
The ADS7828EIPWRQ1 is an automotive-qualified (AEC-Q100) 12-bit, 8-channel SAR ADC with an I2C interface, supplied in a TSSOP-16 package and rated for the -40°C to +125°C temperature range. The ADS7823EB/250G4 is a 12-bit, single-channel SAR ADC with an I2C interface, supplied in a VSSOP-8 (MSOP-8) package and specified over the -40°C to +85°C temperature range. The primary differences are channel count (8 vs 1), package size, temperature grade, and automotive qualification.
Are the ADS7828EIPWRQ1 and ADS7823EB/250G4 pin-to-pin or footprint compatible?
No. The ADS7828EIPWRQ1 uses a 16-pin TSSOP package, while the ADS7823EB/250G4 uses an 8-pin VSSOP package. The pin counts, pin functions, and PCB land patterns differ, so they are not drop-in replacements and require separate board layouts.
Do both devices use the same digital interface?
Yes. Both the ADS7828EIPWRQ1 and the ADS7823EB/250G4 are I2C-compatible SAR ADCs, so both can share a standard two-wire I2C bus. However, the register map, address configuration, and command structure differ between the two devices and must be handled in firmware.
What is the resolution and sampling architecture of each device?
Both are 12-bit successive-approximation-register (SAR) analog-to-digital converters. The ADS7828EIPWRQ1 provides 12-bit resolution across 8 input channels, while the ADS7823EB/250G4 provides 12-bit resolution on a single input channel.
How do the operating temperature ranges compare?
The ADS7828EIPWRQ1 is specified over the -40°C to +125°C ambient temperature range, consistent with its automotive Q1 qualification. The ADS7823EB/250G4 is specified over the -40°C to +85°C ambient temperature range. For high-temperature or under-hood automotive applications, only the ADS7828EIPWRQ1 meets the wider range.
Is the ADS7828EIPWRQ1 automotive qualified while the ADS7823EB/250G4 is not?
Yes. The "Q1" suffix on the ADS7828EIPWRQ1 denotes an automotive-qualified device per the AEC-Q100 standard. The ADS7823EB/250G4 is a standard industrial-grade part and does not carry the Q1 automotive qualification designation.
Can the ADS7823EB/250G4 replace the ADS7828EIPWRQ1 in an existing design?
Not directly. The ADS7823EB/250G4 has only one input channel versus eight on the ADS7828EIPWRQ1, uses a different package and footprint, and has a narrower temperature range. A replacement would require a redesign of the analog input multiplexing, PCB layout, and thermal validation, and would not satisfy automotive Q1 requirements.
Which device is better suited for multi-channel data acquisition?
The ADS7828EIPWRQ1 is better suited for multi-channel data acquisition because it integrates an 8-channel input multiplexer with a single 12-bit SAR ADC, allowing eight analog signals to be monitored through one I2C device. The ADS7823EB/250G4 handles only a single channel per device, so multi-channel systems would require multiple ICs.