Part A
AK5358AET
Asahi en microélectronique / AKM
- Lifecycle
- Active
- Stock
- 3586 PCS
- Package
- TSSOP-16
- Series
- Acquisition de données - ADC DAC - dédié
Replacement verdict
Compatible functional replacement candidate
The AK5358BET is a functional replacement candidate for the AK5358AET, sharing the same core 24-bit stereo ADC architecture, package footprint, and supply requirements, with the B-grade offering a documented improvement in dynamic range and THD+N performance. Designers should validate the updated electrical characteristics against their specific audio signal-chain requirements before final qualification.
Package Type
High match
Resolution and Interface
High match
Supply Voltage Range
High match
Dynamic Range and THD+N
Validation required
Parts at a glance
Part B
AK5358BET
Asahi en microélectronique / AKM
- Lifecycle
- Active
- Stock
- 7990 PCS
- Package
- TSSOP-16
- Series
- Acquisition de données - ADC DAC - dédié
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AK5358AET | AK5358BET | Why it matters |
|---|---|---|---|
| Manufacturer | Asahi Kasei Microdevices (AKM) | Asahi Kasei Microdevices (AKM) | Same manufacturer ensures consistent quality, documentation, and support ecosystem. |
| Function / Product Type | 24-bit Stereo A/D Converter (ADC) | 24-bit Stereo A/D Converter (ADC) | Both are stereo ADCs, so they serve the same signal-conversion role in a design. |
| Resolution | 24 bits | 24 bits | Bit depth determines dynamic range and quantization noise; identical resolution means comparable audio fidelity. |
| Package / Mounting | 24-pin TSSOP (surface mount) | 24-pin TSSOP (surface mount) | Matching footprint and mounting type allow drop-in board replacement without layout changes. |
| Supply Voltage | 3.0 V to 3.6 V (analog and digital) | 3.0 V to 3.6 V (analog and digital) | Compatible supply rails mean the same power design can be reused for either part. |
| Audio Interface | Serial audio interface (I2S / left-justified) | Serial audio interface (I2S / left-justified) | Identical digital interface formats ensure interoperability with the same DSP or codec host. |
| Sampling Rate Support | Up to 96 kHz | Up to 96 kHz | Same maximum sample rate supports the same audio bandwidth and system clocking schemes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings allow use in the same industrial and consumer environments. |
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 | AK5358AET | AK5358BET |
|---|---|---|
| Supplier | - | Asahi Kasei Microdevices/AKM |
| Part Status | Obsolete | Obsolete |
| Type | ADC | ADC |
| Number of Channels | 2 | 2 |
| Resolution(Bits) | 24 b | 24 b |
| Sampling Rate(Per Second) | 8k ~ 96k | 8k ~ 96k |
| Data Interface | I²S | I²S |
| Voltage Supply Source | Analog and Digital | Analog and Digital |
| Voltage - Supply | 2.7V ~ 5.5V, 4.5V ~ 5.5V | 5V |
| Operating Temperature | -20°C ~ 85°C | -20°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the AK5358AET and AK5358BET?
The AK5358AET and AK5358BET are 24-bit, 96 kHz stereo A/D converters from Asahi Kasei Microdevices (AKM) that integrate a microphone amplifier, ALC (automatic level control), and programmable gain amplifier in a small 24-pin TSSOP package, intended for portable audio recording applications.
What is the main difference between the AK5358AET and AK5358BET?
The AK5358BET is a revised version of the AK5358AET. The primary difference is that the AK5358BET supports a wider digital supply voltage range (1.6 V to 3.6 V) for the DVDD pin, whereas the AK5358AET specifies a narrower DVDD range. The analog supply (AVDD) range of 2.4 V to 3.6 V is common to both devices.
Are the AK5358AET and AK5358BET pin-compatible?
Yes. Both devices are offered in the same 24-pin TSSOP package with identical pin assignments, so they are pin-compatible and share the same PCB land pattern.
Do the AK5358AET and AK5358BET have the same audio performance specifications?
Both devices are 24-bit stereo A/D converters with a maximum sampling rate of 96 kHz and support single-ended input. Because the AK5358BET is a revision of the AK5358AET, designers should confirm the specific dynamic range, S/N, and THD+N figures against the respective AKM datasheets before treating the parts as performance-equivalent in a given design.
Can the AK5358BET be used as a drop-in replacement for the AK5358AET?
Because the two parts are pin-compatible and share the same package and core converter architecture, the AK5358BET can generally serve as a replacement for the AK5358AET, provided the design's digital supply voltage and the applicable datasheet specifications are validated for the target application.
What supply voltages do the AK5358AET and AK5358BET require?
Both devices operate from an analog supply (AVDD) of 2.4 V to 3.6 V. The AK5358BET extends the digital supply (DVDD) range down to 1.6 V (up to 3.6 V), which allows direct interfacing to lower-voltage digital logic; the AK5358AET's DVDD range is narrower, so the datasheet should be consulted for its exact limits.
What package do the AK5358AET and AK5358BET use?
Both the AK5358AET and AK5358BET are supplied in a 24-pin TSSOP package, making them suitable for space-constrained portable audio products.