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Analog Devices Inc. SSM2604CPZ-R2
- Part No.:
- SSM2604CPZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 20-WFQFN Exposed Pad, CSP
- Datasheet:
-
SSM2604CPZ-R2.pdf
- Description:
- LOW POWER AUDIO CODEC
- Quantity:
- Payment:
- Shipping:
Inventory:141
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Product details
Overview
SSM2604CPZ-R2 from Analog Devices is a low-power, 24-bit stereo audio codec IC with integrated ADC and DAC, programmable gain line inputs, and digital audio interface supporting I²S, left/right-justified, DSP, and USB modes. It operates from 1.5 V/1.8 V supplies, delivers 100 dB DAC SNR (A-weighted) at 3.3 V, and targets portable audio systems requiring high fidelity and battery efficiency.
For engineers reviewing the SSM2604CPZ-R2 datasheet, SSM2604CPZ-R2 pinout, SSM2604CPZ-R2 application, or SSM2604CPZ-R2 equivalent, key selection criteria include its 20-lead LFCSP package, dual 24-bit Σ-Δ converters, 8–96 kHz sampling rate support, I²C control interface, and −40°C to +85°C industrial temperature range.
Technical Context
The SSM2604CPZ-R2 implements oversampling Σ-Δ architecture for both ADC and DAC paths, with configurable digital filters optimized per sampling rate (8–96 kHz). It supports master/slave clocking via MCLK/XTI input or internal crystal oscillator (12.288 MHz or 24.576 MHz), and offers selectable core clock division (÷1 or ÷2) via CLKDIV2 bit.
Digital audio interface supports four protocols (I²S, left/right-justified, DSP, PCM) with MSB-first, 16–32-bit word length, and frame synchronization via PBLRC/RECLRC. Control is handled through a 2-wire I²C interface (device address 0x32), with register-mapped configuration of volume, bypass, power management, and de-emphasis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DAC SNR (A-weighted) | 100 dB at 3.3 V - enables high-fidelity playback with minimal audible noise floor in portable line-out applications |
| ADC SNR (A-weighted) | 90 dB at 3.3 V - supports clean recording from line-level sources without significant quantization noise |
| Power consumption | 7 mW stereo playback (1.8 V/1.5 V) - extends battery life in MP3 players and mobile handsets |
| Sampling rates | 8–96 kHz - covers CD (44.1 kHz), DVD (48 kHz), high-res (88.2/96 kHz), and voice-band (8–16 kHz) use cases |
| Analog supply range | 1.8–3.6 V - allows direct connection to single-cell Li-ion or regulated 1.8 V/3.3 V rails |
| Digital supply range | 1.5–3.6 V - enables ultra-low-voltage digital core operation independent of analog domain |
| PGA gain range | −34.5 dB to +33 dB in 1.5 dB steps - provides precise signal conditioning for variable line-input levels |
Pinout & Package
SSM2604CPZ-R2 is housed in a 20-lead, 4 mm × 4 mm lead frame chip scale package (LFCSP) with exposed thermal pad connected to PCB ground. Pin 1 is marked by dot; Pin 20 is NC; center thermal pad must be soldered to ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MCLK/XTI | Master clock input / crystal oscillator input | Accepts external clock (≤13.8 MHz, <50 ps jitter) or drives crystal (12.288/24.576 MHz); enables system clock source flexibility |
| XTO | Crystal oscillator output | Completes on-chip oscillator circuit when crystal is connected between MCLK/XTI and XTO |
| BCLK | Digital audio bit clock | I/O pin synchronized to audio data stream; frequency ≥ sampling rate × word length × 2 (e.g., ≥2.048 MHz at 32 kHz/32-bit) |
| PBDAT | DAC data input (playback) | Receives time-multiplexed left/right digital audio samples in selected format (I²S, left-justified, etc.) |
| RECDAT | ADC data output (record) | Outputs processed digital audio from ADC filters; synchronous to RECLRC and BCLK |
| LLINEIN / RLINEIN | Stereo line input (analog) | Single-ended inputs biased to VMID; support PGA gain adjustment and optional high-pass filtering |
| LOUT / ROUT | Stereo line output (analog) | Fixed-gain outputs capable of driving 10 kΩ || 50 pF; held at VMID during standby to prevent pop/click |
| VMID | Midrail voltage reference | Internal bias point (AVDD/2) used for analog input/output DC coupling; requires 4.7 µF decoupling capacitor |
| SDIN / SCLK | I²C control interface | 2-wire serial interface (address 0x32) for configuring registers including volume, format, sampling rate, and power states |
| AVDD / DVDD | Analog/digital supply | Independent 1.8–3.6 V (AVDD) and 1.5–3.6 V (DVDD) rails enable mixed-voltage system integration |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit stereo ADC + DAC | Simultaneous high-resolution conversion enables full-duplex audio processing without external converters |
| Programmable gain amplifier (PGA) | −34.5 dB to +33 dB in 1.5 dB steps per channel - adapts to diverse line-input signal levels while preserving dynamic range |
| Digital de-emphasis | Configurable per sampling rate (32/44.1/48 kHz) to correct pre-emphasized CD/DVD source material |
| ADC high-pass filter | Removes DC offset automatically (corner: 3.7–21.6 Hz) - eliminates speaker thump and improves ADC headroom |
| Bypass path | Direct analog routing from LLINEIN/RLINEIN to LOUT/ROUT - enables zero-latency monitoring without digital conversion |
Applications
| Mobile Handsets | MP3 Players |
|---|---|
Use Scenario: Dual-mic voice capture and stereo headphone playback in compact smartphone form factor. IC Role / Device Role / Timing Role: Audio codec providing simultaneous ADC (mic input) and DAC (headphone drive) with I²S interface to baseband processor. Use Value: 7 mW playback power at 1.8 V extends talk time; 90 dB ADC SNR ensures clear voice recording; 20-lead LFCSP minimizes PCB area. | Use Scenario: High-fidelity music playback from flash memory with line-out to docking station. IC Role / Device Role / Timing Role: Stereo DAC and ADC codec handling sample-rate conversion, volume control, and I²C-configured de-emphasis. Use Value: 100 dB DAC SNR preserves audio detail; 8–96 kHz sampling supports lossless formats; 4 mm × 4 mm footprint fits slim enclosures. |
| Portable Gaming Consoles | Educational Audio Tools |
Use Scenario: Real-time game audio rendering and voice chat over headset in handheld gaming device. IC Role / Device Role / Timing Role: Full-duplex audio interface bridging application processor's I²S and analog headset jacks with programmable gain and mute control. Use Value: Low-latency bypass path enables instant mic monitoring; I²C register access allows runtime format switching (e.g., 44.1 kHz for music, 16 kHz for voice). | Use Scenario: Interactive learning device capturing speech and playing instructional audio through built-in speakers. IC Role / Device Role / Timing Role: Audio front-end managing microphone input conditioning, ADC digitization, DAC playback, and VMID-biased analog I/O. Use Value: −40°C to +85°C rating ensures reliability in classroom environments; 1.5 V digital supply reduces power from coin-cell or USB sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4556VN | 24-bit stereo codec with 94 dB DAC SNR; supports 8–48 kHz only; no USB mode clocking; 24-pin QFN package | Limited to lower sampling rates; lacks USB-mode 12/24 MHz clock compatibility and 88.2/96 kHz support | Choose for cost-sensitive 48 kHz-only designs where extended rate coverage is unnecessary |
| TLV320AIC3106IRHBT | 24-bit codec with 102 dB DAC SNR; integrated HP amp; 32-pin VQFN; I²C/SPI interface; 1.65–3.6 V supplies | Includes Class-G headphone driver; higher pin count; no crystal oscillator support (requires external clock) | Choose when driving headphones directly is required and board space permits larger package |
Compared with AK4556VN and TLV320AIC3106IRHBT, the SSM2604CPZ-R2 uniquely combines USB-mode clocking (12/24 MHz), 8–96 kHz sampling, on-chip crystal oscillator, and 20-pin LFCSP in a single low-power solution - making it optimal for space-constrained portable devices needing broad audio format support.
Availability
SSM2604CPZ-R2 is available at Aetrix Electronics and suitable for mobile handsets, MP3 players, portable gaming consoles, and educational audio tools requiring stable component supply across production lifecycles.
Supply support for SSM2604CPZ-R2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets.
The SSM2604CPZ-R2 belongs to Analog Devices' portable audio codec product line, designed specifically for battery-powered consumer electronics demanding low power, small footprint, and high-fidelity stereo audio conversion.
FAQ
What is the minimum supply voltage required for SSM2604CPZ-R2 analog and digital domains?
The SSM2604CPZ-R2 requires AVDD ≥ 1.8 V for analog circuitry and DVDD ≥ 1.5 V for digital circuitry. Both rails can operate up to 3.6 V. Operation below these minima risks functional failure or undefined behavior, as confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables.
Does SSM2604CPZ-R2 support crystal oscillator operation, and what frequencies are compatible?
Yes, the SSM2604CPZ-R2 supports crystal oscillator operation via MCLK/XTI and XTO pins. Compatible frequencies include 12.288 MHz (for 48 kHz-based systems) and 24.576 MHz (for 96 kHz-based systems), as specified in the General Description and Timing Characteristics sections.
How does the bypass path function in SSM2604CPZ-R2, and when is it useful?
The bypass path in SSM2604CPZ-R2 routes analog line inputs directly to line outputs without ADC/DAC conversion, enabled via the BYPASS bit (Register R4, Bit D3). It is useful for zero-latency monitoring, analog pass-through applications, or reducing power when digital processing is unnecessary.
What digital audio interface formats does SSM2604CPZ-R2 support, and how are they selected?
The SSM2604CPZ-R2 supports I²S, left-justified, right-justified, and DSP/PCM modes. Format selection is performed by writing to the FORMAT bits (Register R7, Bits D1–D0), with all modes operating MSB-first and supporting 16–32-bit word lengths.
Can SSM2604CPZ-R2 operate in USB audio class mode, and what clocking is required?
Yes, the SSM2604CPZ-R2 supports USB audio mode via the USB bit (Register R8, Bit D0), enabling compatibility with standard USB clock rates of 12 MHz or 24 MHz (when CLKDIV2 is set). This mode maintains full 8–96 kHz sampling rate support without external clock synthesis.
SSM2604CPZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad, CSP
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Stereo Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- 90 / 100
- Dynamic Range, ADCs / DACs (db) Typ:
- -
- Voltage - Supply, Analog:
- 1.8V ~ 3.6V
- Voltage - Supply, Digital:
- 1.5V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LFCSP (4x4)
SSM2604CPZ-R2 FAQ
1.How can I place an order for SSM2604CPZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SSM2604CPZ-R2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SSM2604CPZ-R2 reliable?
The price and inventory of SSM2604CPZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSM2604CPZ-R2 is usually 5 days.
3.What payment methods are accepted for SSM2604CPZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSM2604CPZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SSM2604CPZ-R2?
SSM2604CPZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SSM2604CPZ-R2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SSM2604CPZ-R2?
For technical support, including SSM2604CPZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSM2604CPZ-R2 requirements.
6.How does Aetrix verify that SSM2604CPZ-R2 is sourced from the original manufacturer or authorized distributors?
All SSM2604CPZ-R2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SSM2604CPZ-R2 meets industry standards.
7.What is the process for return or replacement of SSM2604CPZ-R2?
All SSM2604CPZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with SSM2604CPZ-R2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SSM2604CPZ-R2 part is unused and in its original packaging.
Return procedure for SSM2604CPZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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