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
Compatible functional replacement candidate
The ADS7828EIPWRQ1 and ADS7828E/2K5G4 share the same 12-bit 8-channel SAR ADC core, I2C interface, and TSSOP-16 footprint, making them functionally interchangeable in most designs. The primary distinction is qualification grade: the Q1 variant is AEC-Q100 automotive-qualified, while the G4 variant is an industrial-grade device with a different ordering suffix. Designers should confirm the required qualification level and operating temperature range before substituting one for the other.
Resolution and Channel Count
High match
Package and Pinout
High match
Interface Type
High match
Qualification Grade
Validation required
Parts at a glance
Part B
ADS7828E/2K5G4
德州儀器
- Lifecycle
- Active
- Stock
- 2820 件
- Package
- TSSOP-16
- 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 | ADS7828E/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the smallest analog signal change the ADC can resolve; identical resolution means equivalent measurement precision. |
| Number of Input Channels | 8 (single-ended) / 4 (pseudo-differential) | 8 (single-ended) / 4 (pseudo-differential) | Defines how many analog signals can be multiplexed into the converter; matching channel count ensures the same system-level input capacity. |
| Sampling Rate | 50 kSPS | 50 kSPS | Sets the maximum conversion throughput; identical rates mean the same signal bandwidth can be captured. |
| Interface Type | I2C (2-wire) | I2C (2-wire) | Determines the digital communication protocol and required host pins; matching interface allows drop-in bus compatibility. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating power domain; identical ranges ensure the same supply rails can be used. |
| Reference Type | External (internal reference option) | External (internal reference option) | Affects accuracy and design complexity; matching reference options allow the same biasing scheme to be reused. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Determines environmental robustness; identical ranges mean the parts are interchangeable across the same application conditions. |
| Package / Mounting | 16-TSSOP (surface mount) | 16-TSSOP (surface mount) | Package footprint and mounting style must match for PCB layout compatibility; both use the same TSSOP outline. |
| Qualification / Grade | Automotive AEC-Q100 qualified | Industrial grade | Qualification level affects reliability guarantees and suitability for automotive vs. industrial environments; this is the key differentiator between the two parts. |
| Packaging / Ordering Format | Tape and reel (RQ1 suffix) | Tape and reel (2K5 suffix) | Ordering format affects manufacturing handling and reel quantity; both are reeled but differ in qualification-linked part numbering. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7828EIPWRQ1 | ADS7828E/2K5G4 |
|---|---|---|
| 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 | 8 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | I²C | I²C |
| Configuration | MUX-S/H-ADC | MUX-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, Internal |
| 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 ADS7828E/2K5G4?
The ADS7828EIPWRQ1 is an automotive-qualified (AEC-Q100) variant supplied in a TSSOP-16 package and marked with the Q1 automotive suffix, while the ADS7828E/2K5G4 is the industrial-grade version supplied in the same TSSOP-16 package and delivered on a 2,500-unit tape-and-reel. Both share the same 12-bit, 8-channel SAR ADC core, I2C interface, and internal reference architecture; the primary differences are qualification grade, ordering suffix, and packaging/reel designation.
Are the ADS7828EIPWRQ1 and ADS7828E/2K5G4 functionally interchangeable in a design?
Functionally, both devices are 12-bit, 8-channel, I2C-compatible SAR ADCs with an internal 2.5 V reference and the same TSSOP-16 pinout, so they are pin-compatible. However, substitution must account for the automotive qualification of the Q1 device versus the industrial grade of the E/2K5G4, and the design's operating temperature and reliability requirements should be validated against the respective datasheets before interchange.
What is the resolution and channel count of these ADCs?
Both the ADS7828EIPWRQ1 and ADS7828E/2K5G4 are 12-bit successive-approximation register (SAR) analog-to-digital converters with 8 input channels, configurable as either single-ended or pseudo-differential inputs via the I2C control interface.
What supply voltage and reference do these devices use?
Both devices operate from a single 2.7 V to 5.5 V analog supply and include an on-chip 2.5 V reference, while also supporting an external reference if higher accuracy or a different full-scale range is required. The I2C digital interface is compatible with standard and fast-mode operation.
What package and pin configuration do the ADS7828EIPWRQ1 and ADS7828E/2K5G4 use?
Both parts are offered in a 16-pin TSSOP (PW) package with an identical pinout, which includes the analog inputs, I2C clock and data lines, reference pins, supply, and ground. The shared package and pinout enable board-level compatibility between the two orderable variants.
What does the "Q1" suffix indicate on the ADS7828EIPWRQ1?
The Q1 suffix denotes that the device is qualified to the automotive AEC-Q100 standard and is intended for automotive and other high-reliability applications. The ADS7828E/2K5G4 does not carry the Q1 automotive qualification suffix and is specified for industrial-grade applications.
What does the "2K5" designation mean on the ADS7828E/2K5G4?
The 2K5 designation indicates the device is supplied on a 2,500-unit tape-and-reel, which is the standard packaging quantity for automated SMT assembly lines. The G4 suffix denotes the lead-free (RoHS-compliant) green package option.
What is the I2C address configuration and data rate of these converters?
Both devices communicate over an I2C interface and support software-selectable slave addresses via the A0/A1 address pins, allowing multiple devices on the same bus. They support standard-mode (100 kHz) and fast-mode (400 kHz) I2C operation, with conversion results read back as 12-bit words.