Part A
AD7622BSTZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5006 PCS
- Package
- LQFP-48
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7622BSTZ and AD7623ASTZRL are both 16-bit, 1 MSPS PulSAR analog-to-digital converters from Analog Devices, sharing the same LQFP-48 package and core architecture. The AD7623ASTZRL offers a higher typical SNR and lower power consumption, making it a strong functional candidate for the AD7622BSTZ in most precision acquisition designs, provided the user validates the specific timing and interface requirements of the target application.
Resolution and Sample Rate
High match
Package Type
High match
Supply Voltage
High match
Dynamic Performance
Validation required
Parts at a glance
Part B
AD7623ASTZRL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 8788 PCS
- Package
- LQFP-48
- 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 | AD7622BSTZ | AD7623ASTZRL | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both are 16-bit SAR ADCs, so nominal resolution is identical and not a differentiator for substitutability. |
| Sampling Rate | 2 MSPS | 1.33 MSPS | The AD7622 offers a higher maximum throughput, which affects achievable data rate and timing budget in the application. |
| Input Type | Differential | Differential | Both accept differential inputs, so the analog front-end topology can remain the same. |
| Supply Voltage (Analog) | 5 V | 5 V | Identical analog supply requirements simplify power rail reuse between the two parts. |
| Interface | SPI / Parallel | SPI / Parallel | Both support serial and parallel interfaces, allowing the same digital host connection to be reused. |
| Package | 48-Lead LQFP | 48-Lead LQFP | Identical package and pinout enable drop-in board compatibility without layout changes. |
| Operating Temperature Range | -40 to +85 °C | -40 to +85 °C | Matching temperature ranges ensure equivalent environmental robustness for the target application. |
| Power Consumption | Higher (2 MSPS operation) | Lower (1.33 MSPS operation) | The faster part typically dissipates more power, which matters for thermal and energy-sensitive designs. |
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 | AD7622BSTZ | AD7623ASTZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | PulSAR® | PulSAR® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 2M | 1.33M |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | SPI, Parallel, DSP | SPI, Parallel, DSP |
| Configuration | 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, Internal |
| Voltage - Supply, Analog | 2.37V ~ 2.63V | 2.37V ~ 2.63V |
| Voltage - Supply, Digital | 2.37V ~ 2.63V | 2.37V ~ 2.63V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD7622BSTZ and AD7623ASTZRL?
The AD7622BSTZ is a 16-bit, 2 MSPS PulSAR differential ADC in a 48-lead LQFP package, while the AD7623ASTZRL is a 16-bit, 1.33 MSPS PulSAR differential ADC in a 48-lead LQFP package. The primary differences are throughput rate (2 MSPS vs 1.33 MSPS) and the corresponding power consumption and timing specifications.
Are the AD7622BSTZ and AD7623ASTZRL pin-compatible?
Both devices are offered in the same 48-lead LQFP package and share the same pinout for the PulSAR family, allowing board-level compatibility. However, designers must verify timing and throughput differences before substituting one for the other in an existing design.
What is the resolution and architecture of these ADCs?
Both the AD7622BSTZ and AD7623ASTZRL are 16-bit successive-approximation register (SAR) analog-to-digital converters using the PulSAR architecture, providing no pipeline delay and accurate DC linearity performance.
What are the maximum sampling rates of the AD7622BSTZ and AD7623ASTZRL?
The AD7622BSTZ supports a maximum throughput of 2 MSPS, while the AD7623ASTZRL supports a maximum throughput of 1.33 MSPS. Both rates apply to the fully differential input configuration.
Do both devices support the same analog input configuration?
Yes, both the AD7622BSTZ and AD7623ASTZRL feature fully differential analog inputs with a specified input voltage range of ±VREF, supporting differential signal chains commonly used in medical imaging, data acquisition, and instrumentation applications.
What is the difference in power consumption between the two parts?
The AD7622BSTZ, operating at 2 MSPS, consumes approximately 90 mW typical at 5 V supply. The AD7623ASTZRL, operating at 1.33 MSPS, consumes approximately 65 mW typical. Lower throughput in the AD7623ASTZRL results in reduced power dissipation.
What digital interface do the AD7622BSTZ and AD7623ASTZRL use?
Both devices provide a parallel digital interface with a flexible host interface, supporting both parallel and serial readback modes. The interface is compatible with 2.5 V, 3 V, and 5 V logic supplies, allowing direct connection to a variety of digital hosts.
Can the AD7623ASTZRL be used as a drop-in replacement for the AD7622BSTZ?
Because both parts share the same package and pinout, the AD7623ASTZRL can be placed on a board designed for the AD7622BSTZ. However, the lower maximum throughput (1.33 MSPS vs 2 MSPS) and different timing specifications must be validated against the system requirements before substitution.