Part A
ADS5474IPFP
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 7275 PCS
- Package
- HTQFP-80
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS5474IPFP and ADS5423IPGP are both 14-bit high-speed analog-to-digital converters offering comparable sampling performance and a shared TQFP-64 footprint, making them a viable functional replacement candidate. However, differences in resolution-adjacent specifications, supply architecture, and interface timing require careful validation against the target design before substitution.
Resolution and Sample Rate
High match
Package and Pinout
Validation required
Supply Voltage Architecture
Validation required
Digital Output Interface
Validation required
Parts at a glance
Part B
ADS5423IPGP
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 126 PCS
- Package
- TQFP-52
- Series
- Data Acquisition - Analog to Digital Converters (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 | ADS5474IPFP | ADS5423IPGP | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 14 bit | Both converters provide 14-bit resolution, so quantization noise floor and nominal dynamic range are comparable. |
| Sampling Rate | 400 MSPS | 80 MSPS | The maximum sample rate determines the input bandwidth that can be digitized; the ADS5474 supports much higher Nyquist zones than the ADS5423. |
| Input Type | Differential | Differential | Both use differential inputs, which improve common-mode rejection and even-order distortion performance. |
| Output Interface | Parallel LVDS | Parallel CMOS | The output signaling differs; LVDS offers better noise immunity at high speed while CMOS is simpler to interface but limited in toggle rate. |
| Supply Voltage | 3.3 V analog / 3.3 V digital | 5 V analog / 3.3 V digital | Different analog supply rails affect board power design and the achievable input voltage swing. |
| Analog Input Full-Scale Range | 2.2 Vpp differential | 2.2 Vpp differential | Matching full-scale ranges allow similar front-end amplifier and transformer designs for both parts. |
| Package | HTQFP-80 | HTQFP-52 | Different package footprints and pin counts mean the two parts are not drop-in compatible on the same PCB layout. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings mean both suit the same environmental conditions. |
| Power Consumption | Approx. 1.9 W | Approx. 1.1 W | Higher sampling rate in the ADS5474 comes with greater power dissipation, impacting thermal and supply design. |
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 | ADS5474IPFP | ADS5423IPGP |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 14 | 14 |
| Sampling Rate(Per Second) | 400M | 80M |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | Parallel | Parallel |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | Pipelined | Pipelined |
| Reference Type | Internal | Internal |
| Voltage - Supply, Analog | 3.1V ~ 3.6V, 5V | 5V |
| Voltage - Supply, Digital | 3V ~ 3.6V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS5474IPFP and ADS5423IPGP?
The ADS5474IPFP is a 14-bit, 400-MSPS analog-to-digital converter in a 80-pin HTQFP package, while the ADS5423IPGP is a 14-bit, 80-MSPS ADC in a 52-pin HTQFP package. The ADS5474IPFP offers a significantly higher sampling rate and wider input bandwidth, whereas the ADS5423IPGP targets lower-speed, lower-power applications.
Are the ADS5474IPFP and ADS5423IPGP pin-compatible?
No. The ADS5474IPFP uses an 80-pin HTQFP (PFP) package, and the ADS5423IPGP uses a 52-pin HTQFP (PGP) package. The different pin counts and land patterns mean they are not drop-in replacements for each other.
What are the maximum sampling rates of these two ADCs?
The ADS5474IPFP supports a maximum sampling rate of 400 MSPS, while the ADS5423IPGP supports a maximum sampling rate of 80 MSPS. The higher rate of the ADS5474IPFP suits wideband and high-frequency signal acquisition, while the ADS5423IPGP suits lower-bandwidth digitization.
Do both devices provide 14-bit resolution?
Yes. Both the ADS5474IPFP and ADS5423IPGP are 14-bit resolution analog-to-digital converters, so their nominal quantization resolution is the same; the primary differences lie in sampling rate, package, power, and analog input bandwidth.
What are the analog input interfaces of the ADS5474IPFP and ADS5423IPGP?
Both devices use differential analog inputs. The ADS5474IPFP is specified for a 2.2-Vpp differential input range, and the ADS5423IPGP is specified for a 2.2-Vpp differential input range as well. Designers should confirm the exact input configuration and recommended interface circuitry in each respective datasheet.
How do the power consumption figures compare?
The ADS5474IPFP typically dissipates approximately 2.2 W at 400 MSPS, whereas the ADS5423IPGP typically dissipates approximately 0.95 W at 80 MSPS. The higher power of the ADS5474IPFP reflects its much higher sampling rate and wider analog bandwidth.
What clock input requirements do these ADCs have?
Both devices accept a differential clock input and support sine-wave or LVDS/LVPECL-type clocking depending on configuration. The ADS5474IPFP requires a low-jitter clock suitable for 400-MSPS operation, while the ADS5423IPGP has relaxed clock jitter requirements consistent with its 80-MSPS maximum rate. Refer to each datasheet for exact clock amplitude and jitter specifications.
Can the ADS5423IPGP be used as a lower-cost alternative to the ADS5474IPFP?
Only if the application can tolerate the lower 80-MSPS sampling rate and the different 52-pin package. The ADS5423IPGP is not a drop-in replacement because of package and pinout differences, and system performance must be revalidated for the reduced sampling rate and analog bandwidth.