Part A
ADS5400IPZP
Texas Instruments
- Lifecycle
- Active
- Stock
- 7717 PCS
- Package
- HTQFP-100
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Not a drop-in replacement
The ADS5400IPZP and ADS5423IPGPR are not drop-in replacements for one another. They differ in resolution, sampling rate, analog input architecture, and package footprint, so a direct board-level substitution is not feasible without redesign of the signal chain, clocking, and layout.
Different resolution
Different sampling rate
Different input architecture
Different package footprint
Parts at a glance
Part B
ADS5423IPGPR
Texas Instruments
- Lifecycle
- Active
- Stock
- 8872 PCS
- Package
- TQFP-52
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | ADS5400IPZP | ADS5423IPGPR | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 14 bit | Higher resolution provides finer quantization and better dynamic range, which directly affects measurement accuracy and SNR. |
| Sampling Rate | 1 GSPS | 80 MSPS | The maximum sample rate determines the input bandwidth the ADC can capture; a 1 GSPS device supports much wider signal bandwidths than an 80 MSPS device. |
| Input Type | Differential | Differential | Differential inputs improve common-mode noise rejection and are required for optimal performance in high-speed signal chains. |
| Output Interface | LVDS (DDR) | LVDS (DDR) | The digital output format must match the receiving FPGA/ASIC interface; LVDS DDR is common for high-speed converters. |
| Supply Voltage | 3.3 V analog, 1.8 V digital | 3.3 V analog, 3.3 V digital | Supply rail requirements affect board power design and level-shifting needs; mismatched rails require different power architectures. |
| Power Consumption | Approx. 2.4 W | Approx. 1.1 W | Power dissipation impacts thermal design, supply sizing, and overall system efficiency; the higher-speed device consumes significantly more. |
| Package | 100-pin HTQFP (PZP) | 64-pin HTQFP (PGP) | Package footprint and pin count determine PCB layout compatibility; these parts are not drop-in replacements for each other. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Industrial temperature range ensures reliable operation across harsh environments; identical ranges ease qualification. |
| SNR (typical) | Approx. 61 dBFS | Approx. 72 dBFS | Signal-to-noise ratio defines the usable dynamic range; the 14-bit device offers notably better SNR for sensitive receive chains. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS5400IPZP | ADS5423IPGPR |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 12 | 14 |
| Sampling Rate(Per Second) | 1G | 80M |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | LVDS - 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 | External, Internal | Internal |
| Voltage - Supply, Analog | 3.135V ~ 3.465V, 5V | 5V |
| Voltage - Supply, Digital | 3.135V ~ 3.465V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Features | Temperature Sensor | - |
Frequently asked questions
What are the key differences between the ADS5400IPZP and ADS5423IPGPR?
The ADS5400IPZP is a 12-bit, 1-GSPS analog-to-digital converter in a 100-pin HTQFP (PZP) package, while the ADS5423IPGPR is a 14-bit, 80-MSPS ADC in a 52-pin HTQFP (PGP) package. They differ in resolution, sampling rate, package, pin count, and power consumption, so they are not drop-in replacements for each other.
Do the ADS5400IPZP and ADS5423IPGPR have the same package footprint?
No. The ADS5400IPZP uses a 100-pin HTQFP (PZP) package, whereas the ADS5423IPGPR uses a 52-pin HTQFP (PGP) package. The pin counts and land patterns differ, so the PCB footprints are not compatible.
Which device offers a higher sampling rate?
The ADS5400IPZP supports sampling rates up to 1 GSPS, while the ADS5423IPGPR supports up to 80 MSPS. The ADS5400IPZP is therefore intended for much higher-speed signal acquisition applications.
Which device provides higher resolution?
The ADS5423IPGPR provides 14-bit resolution, while the ADS5400IPZP provides 12-bit resolution. The ADS5423IPGPR offers finer quantization, whereas the ADS5400IPZP prioritizes higher sampling speed.
Are the ADS5400IPZP and ADS5423IPGPR pin-to-pin compatible?
No. Because the two devices have different pin counts (100 pins vs. 52 pins) and different package types (PZP vs. PGP), they are not pin-to-pin compatible and cannot be interchanged on the same PCB layout without redesign.
What input interface do these ADCs use?
Both the ADS5400IPZP and ADS5423IPGPR are differential-input ADCs. The ADS5400IPZP is specified for analog input frequencies up to its 1-GSPS operating range, while the ADS5423IPGPR is specified for its 80-MSPS operating range. Designers should consult the respective datasheets for exact input voltage range and bandwidth specifications.
Can the ADS5423IPGPR be used as a substitute for the ADS5400IPZP in an existing design?
No, not as a direct substitute. The ADS5423IPGPR has a lower sampling rate (80 MSPS vs. 1 GSPS), higher resolution (14-bit vs. 12-bit), a different package and pin count, and different power and interface requirements. Any substitution would require a full design review against the manufacturer datasheets.