Part A
ADS1147IPWR
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 1435 個数
- Package
- TSSOP-20
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Not a drop-in replacement
The ADS1119IPWR and ADS1147IPWR are not drop-in replacements for one another. The ADS1119IPWR is a 4-channel, 16-bit delta-sigma ADC with an I2C interface in a TSSOP-16 package, while the ADS1147IPWR is a 4-channel, 16-bit delta-sigma ADC with an SPI interface and integrated PGA in a TSSOP-20 package. The differing serial interface, pin count, footprint, and input architecture require board-level redesign and firmware changes, so neither device can be substituted directly for the other without validation.
Different serial interface
Different package footprint
Different input architecture
Different pin count
Parts at a glance
Part B
ADS1119IPWR
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 6293 個数
- Package
- TSSOP-16
- Series
- データ取得 - アナログ/デジタルコンバータ (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 | ADS1119IPWR | ADS1147IPWR | Why it matters |
|---|---|---|---|
| Resolution (bits) | 16 | 16 | Both are 16-bit ADCs, so resolution is equivalent for precision measurement applications. |
| Number of input channels | 4 (differential/ single-ended) | 4 (differential) / 7 (single-ended) | Channel count determines how many signals can be measured; the ADS1147 offers more single-ended inputs. |
| Maximum sample rate (SPS) | 1000 | 2000 | Higher sample rate enables faster signal acquisition and wider bandwidth for dynamic signals. |
| Interface | I2C | SPI | The digital interface must match the host microcontroller; I2C and SPI are not directly interchangeable. |
| PGA gain range | 1 to 128 | 1 to 128 | Programmable gain allows amplification of small signals; both support the same gain range. |
| Supply voltage (analog) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Supply range determines compatibility with the system power rail; both are identical here. |
| Internal reference | Yes (2.048 V) | Yes (2.048 V) | An internal reference simplifies design and improves accuracy; both provide a 2.048 V reference. |
| Package | TSSOP-16 | TSSOP-20 | Package footprint affects PCB layout and cannot be directly substituted without redesign. |
| Operating temperature range | -40 °C to +125 °C | -40 °C to +125 °C | Temperature range determines suitability for industrial environments; both are identical. |
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 | ADS1147IPWR | ADS1119IPWR |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 2k | 1k |
| Number of Inputs | 2, 3 | 4 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | SPI | I²C |
| Configuration | MUX-PGA-ADC | MUX-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.3V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 2.3V ~ 5.5V |
| Features | PGA | PGA |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 125°C |
| Ratio - S / H: ADC | - | 0:1 |
Frequently asked questions
What are the primary functional differences between the ADS1119IPWR and ADS1147IPWR?
The ADS1119IPWR is a 4-channel, 16-bit delta-sigma ADC with an I2C interface, operating from a single 2.3 V to 5.5 V supply and featuring a programmable gain amplifier (PGA) with gains from 1 to 128. The ADS1147IPWR is a 4-channel (2 differential/4 single-ended), 16-bit delta-sigma ADC with an SPI interface, operating from a 2.7 V to 5.25 V analog supply and 2.7 V to 5.25 V digital supply, and includes a PGA with gains from 1 to 128 plus an internal oscillator and reference. The key differences are the communication interface (I2C vs SPI) and supply voltage ranges.
Can the ADS1119IPWR and ADS1147IPWR be used interchangeably in the same PCB design?
No. The ADS1119IPWR uses an I2C interface while the ADS1147IPWR uses an SPI interface, and their pinouts and package footprints differ (ADS1119IPWR in a 16-pin TSSOP and ADS1147IPWR in a 20-pin TSSOP). They are not pin-compatible or interface-compatible, so direct substitution without redesign is not possible.
What are the resolution and data rate specifications of each device?
Both devices are 16-bit delta-sigma ADCs. The ADS1119IPWR supports programmable data rates from 20 SPS to 1000 SPS. The ADS1147IPWR supports programmable data rates from 5 SPS to 2000 SPS. Both offer 16-bit no-missing-code performance under specified conditions per their respective datasheets.
How do the input channel configurations compare between the ADS1119IPWR and ADS1147IPWR?
The ADS1119IPWR provides 4 single-ended or 2 differential inputs with a flexible input multiplexer. The ADS1147IPWR provides 4 single-ended or 2 differential inputs via its input multiplexer as well. Both support differential and single-ended measurement configurations, but the external interface and register maps differ.
Do both devices include an internal reference and oscillator?
The ADS1147IPWR includes an internal oscillator and an internal voltage reference, reducing external component count. The ADS1119IPWR requires an external reference voltage for ratiometric or absolute measurements and does not include an internal reference; it does include an internal oscillator for its digital interface timing per its datasheet.
What are the supply voltage and power consumption differences?
The ADS1119IPWR operates from a single supply of 2.3 V to 5.5 V. The ADS1147IPWR operates from an analog supply of 2.7 V to 5.25 V and a digital supply of 2.7 V to 5.25 V. Power consumption depends on data rate and configuration; the ADS1119IPWR is specified for low-power operation suitable for battery-powered sensor applications, while the ADS1147IPWR includes additional features such as an internal reference and oscillator that affect total power. Consult the respective datasheets for exact current consumption at specific data rates.
Which device is better suited for SPI-based systems versus I2C-based systems?
The ADS1147IPWR is suited for systems using an SPI bus, offering higher throughput and full-duplex communication typical of SPI peripherals. The ADS1119IPWR is suited for systems using an I2C bus, which requires fewer pins and supports multiple devices on a shared bus. Selection should be based on the host microcontroller's available interface and system architecture.
Are both devices specified for the same operating temperature range?
Both the ADS1119IPWR and ADS1147IPWR are specified for the industrial temperature range of -40°C to +125°C per their respective manufacturer datasheets. Designers should verify the exact grade and package suffix against the datasheet for the specific orderable part number.