Part A
AK5358AET
Asahi Kasei Microdevices/AKM
- Lifecycle
- Active
- Stock
- 3586 PCS
- Package
- TSSOP-16
- Series
- Data Acquisition - ADCs-DACs - Special Purpose
Replacement verdict
Compatible functional replacement candidate
The AK5358AET and AK5357ET are functionally comparable 24-bit stereo audio ADCs sharing the same TSSOP-16 package and 2.7–3.6 V supply range, making the AK5358AET a viable functional replacement candidate for the AK5357ET in most audio capture designs. Designers should validate the differing dynamic performance, supported sample rates, and control interface configuration against their specific system requirements before committing to a drop-in substitution.
Package Type
High match
Supply Voltage Range
High match
Dynamic Performance
Validation required
Sample Rate Support
Validation required
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 | AK5357ET | Why it matters |
|---|---|---|---|
| Resolution (ADC bits) | 24 bit | 24 bit | Bit depth determines the dynamic range and quantization noise floor of the digitized signal; both are 24-bit so this is not a differentiator. |
| Number of ADC channels | 2 (stereo) | 2 (stereo) | Channel count defines whether the part can handle stereo audio; both are stereo ADCs, so they are functionally interchangeable in this respect. |
| Maximum sampling rate | 96 kHz | 96 kHz | Sample rate support determines compatibility with audio formats; both support up to 96 kHz, covering standard consumer audio up to DVD-Audio class rates. |
| Dynamic range (ADC) | 102 dB | 100 dB | Dynamic range indicates the usable signal-to-noise window; the AK5358AET offers slightly better performance, which can matter in high-fidelity capture designs. |
| S/N ratio (ADC) | 102 dB | 100 dB | Signal-to-noise ratio affects the clarity of quiet passages; a 2 dB advantage for the AK5358AET may be relevant in noise-sensitive applications. |
| THD+N (ADC) | -90 dB | -88 dB | Total harmonic distortion plus noise reflects linearity and distortion performance; lower magnitude is better, and the AK5358AET is marginally superior. |
| Analog supply voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Supply range determines power rail compatibility; identical ranges mean both can drop into the same 5 V analog design. |
| Digital supply voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Digital I/O voltage must match the host processor interface; identical ranges ensure both parts interface with the same 3.3 V logic. |
| Package | 24-pin TSSOP | 24-pin TSSOP | Package and pin count affect PCB footprint and layout; identical packages allow direct board-level substitution without redesign. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range defines environmental robustness; identical industrial ranges mean both suit the same operating conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AK5358AET | AK5357ET |
|---|---|---|
| Supplier | - | Asahi Kasei Microdevices/AKM |
| Part Status | Obsolete | Obsolete |
| Type | ADC | ADC, Audio |
| Number of Channels | 2 | 2 |
| Resolution(Bits) | 24 b | 24 b |
| Sampling Rate(Per Second) | 8k ~ 96k | 96k |
| Data Interface | I²S | I²S |
| Voltage Supply Source | Analog and Digital | Analog and Digital |
| Voltage - Supply | 2.7V ~ 5.5V, 4.5V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -20°C ~ 85°C | -20°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AK5358AET and AK5357ET?
The AK5358AET is a 24-bit, 96 kHz-capable stereo A/D converter with single-ended inputs, while the AK5357ET is a 24-bit, 48 kHz stereo A/D converter. The AK5358AET supports higher sample rates and includes a single-ended input configuration, whereas the AK5357ET is limited to 48 kHz operation.
Are the AK5358AET and AK5357ET pin-compatible?
Both devices are offered in a 16-pin TSSOP package (ET suffix), but pin compatibility must be verified against the respective AKM datasheets. The AK5358AET and AK5357ET share the same package type, but pin function assignments should be confirmed before substitution.
What is the maximum sample rate supported by each device?
The AK5358AET supports sample rates up to 96 kHz, while the AK5357ET supports sample rates up to 48 kHz. Designs requiring 96 kHz sampling must use the AK5358AET.
Do both devices support the same audio data interface formats?
Both the AK5358AET and AK5357ET support standard audio serial interfaces including I2S and left-justified formats. The AK5358AET additionally supports 24-bit data at higher sample rates, while the AK5357ET is limited to 48 kHz operation.
What is the difference in power supply requirements between the two parts?
Both devices operate from a single analog supply in the 2.7 V to 3.6 V range and a digital supply in the 1.6 V to 3.6 V range, per AKM documentation. Designers should confirm exact supply voltage ranges and current consumption from the respective datasheets before finalizing power designs.
Can the AK5357ET be used as a drop-in replacement for the AK5358AET?
No. The AK5357ET is limited to 48 kHz sample rates, while the AK5358AET supports up to 96 kHz. A drop-in replacement is only possible if the target design operates at 48 kHz or below and all pin functions and electrical parameters are verified against both datasheets.
What are the typical applications for each device?
The AK5358AET is suited for applications requiring higher sample rates such as audio recording equipment and higher-fidelity consumer audio, while the AK5357ET targets standard 48 kHz audio capture applications such as voice recording and general consumer audio products.