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Analog Devices Inc. AD74111YRU-REEL
- Part No.:
- AD74111YRU-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD74111YRU-REEL.pdf
- Description:
- IC AUDIO CODEC MONO 16-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
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Product details
Overview
AD74111YRU-REEL from Analog Devices is a 2.5 V mono audio codec IC featuring integrated 24-bit sigma-delta ADC and DAC channels, programmable 0–12 dB PGA gain, software-controllable clickless mute, and on-chip 1.125 V reference. It supports 8–48 kHz sample rates, 16/20/24-bit word lengths, and operates across –40°C to +105°C for automotive-grade voice and audio capture/playback in telematic systems.
For engineers reviewing the AD74111YRU-REEL datasheet, AD74111YRU-REEL pinout, AD74111YRU-REEL application, or AD74111YRU-REEL equivalent, key selection criteria include its 85 dB ADC dynamic range (20 Hz–20 kHz), 93 dB DAC dynamic range, 16-lead TSSOP package with analog/digital supply separation (AVDD/DVDD1/DVDD2), and master/slave serial port configurability for DSP interfacing.
Technical Context
The AD74111YRU-REEL implements multibit sigma-delta modulation in both ADC and DAC paths, with decimation (ADC) and interpolation (DAC) filters providing 120 dB stop-band attenuation and 75 dB stop-band attenuation respectively. Its digital filtering includes low-group-delay mode (87 µs ADC / 55 µs DAC) for latency-sensitive telematics.
It uses three independent power domains: AVDD (2.5 V analog), DVDD2 (2.5 V digital core), and DVDD1 (2.5–3.6 V digital I/O), enabling 3.3 V-tolerant interface operation. The serial port supports mixed/data modes, 16/20/24-bit word lengths, and configurable MCLK prescaling (1×–12×) to derive sample rates from fixed master clocks like 12.288 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 24 bits - Enables high-fidelity mono voice digitization with >67 dB THD+N at 48 kHz. |
| DAC Resolution | 24 bits - Delivers 93 dB dynamic range output suitable for analog line-level playback without external amplification. |
| Sample Rate Range | 8–48 kHz - Configurable via MCLK prescalers to match voiceband (8–16 kHz) or full-audio (44.1/48 kHz) requirements. |
| Dynamic Range (ADC) | 85 dB (A-weighted, 48 kHz) - Meets SNR requirements for automotive hands-free calling and speech recognition. |
| Dynamic Range (DAC) | 93 dB (no filter, 48 kHz) - Supports clean analog output for portable audio devices with minimal post-processing. |
| Power Supply Voltages | AVDD = 2.5 V ±5%, DVDD2 = 2.5 V ±5%, DVDD1 = 2.5–3.6 V - Allows coexistence with 3.3 V DSPs while isolating analog noise. |
| Operating Temperature | –40°C to +105°C - Qualified for under-hood automotive and industrial embedded environments. |
Pinout & Package
AD74111YRU-REEL is housed in a 16-lead TSSOP (RU-16) package with exposed pad for thermal management and automotive-grade reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DCLK | Serial clock I/O | Controls data transfer timing; bidirectional in master mode (output), input in slave mode. |
| DIN | Serial data input | Samples on RESET rising edge to select master/slave mode; carries control words and DAC data. |
| DFS | Frame sync I/O | Indicates start of data frame; output in master mode, input in slave mode. |
| DOUT | Serial data output | Transmits ADC data and status registers; three-state capable for bus sharing. |
| RESET | Active-low reset input | Resets internal registers and RAM; initiates 3072-MCLK initialization sequence. |
| VIN | ADC analog input | Single-ended 0.5 Vrms input referenced to VREFCAP; accepts signals up to 1.414 Vp-p. |
| VOUT | DAC analog output | Single-ended 0.5 Vrms output with 145 Ω source impedance; requires external RC filter per Figure 7. |
| REFCAP | Reference decoupling | Connects 100 nF ceramic + 10 µF tantalum caps; also accepts external 1.125 V reference if internal ref disabled. |
| CAPP/CAPN | ADC filter capacitors | External 100 pF–1 nF NPO/polypropylene caps stabilize PGA output and suppress modulator noise. |
| AVDD/DVDD1/DVDD2 | Power supplies | Separate analog (2.5 V), digital interface (2.5–3.6 V), and digital core (2.5 V) rails minimize crosstalk. |
| AGND/DGND | Analog/digital ground | Must be connected externally with low-impedance trace; AGND–DGND differential ≤ ±0.3 V. |
| MCLK | Master clock input | Accepts 12.288 MHz (default) or other frequencies; feeds programmable prescaler chain for IMCLK generation. |
Key Features
| Feature | Design Value |
|---|---|
| Data-directed scrambling DAC | Reduces jitter sensitivity in clock-constrained systems, preserving 93 dB DAC dynamic range without ultra-low-jitter sources. |
| Perfect differential linearity restoration | Minimizes idle tones and noise floor in sigma-delta ADC, achieving 85 dB dynamic range without external calibration. |
| Programmable ADC gain (0–12 dB, 3 dB steps) | Enables direct connection of microphones or line inputs without external amplifiers, simplifying BOM in portable audio. |
| Software-controllable clickless mute | Eliminates pop/click artifacts during volume transitions or channel muting-critical for automotive infotainment user experience. |
| Low group delay mode (87 µs ADC / 55 µs DAC) | Reduces end-to-end latency for real-time voice processing in telematics and VoIP gateways where <100 µs delay is required. |
| On-chip 1.125 V reference (50 ppm/°C TC) | Removes need for external precision reference; bypassable for system-level reference synchronization across multiple codecs. |
Applications
| Digital Video Camcorders (DVC) | Portable Audio Devices |
|---|---|
Use Scenario: Capturing mono narration or commentary during video recording using electret microphone input. IC Role / Device Role / Timing Role: ADC front-end with programmable PGA gain and anti-alias filtering; DAC provides headphone monitoring path. Use Value: 85 dB ADC dynamic range ensures clean voice capture in noisy environments; 24-bit resolution preserves tonal detail for post-processing. |
Use Scenario: Audio playback and voice recording in handheld PDAs or feature phones with space-constrained PCB layout. IC Role / Device Role / Timing Role: Mono codec handling both analog input (microphone) and output (speaker/headphone) with shared serial interface. Use Value: Single 16-lead TSSOP replaces discrete ADC+DAC+PGA solution, reducing board area by >40% and eliminating external reference components. |
| Telematic Systems | Voice Processing Units |
Use Scenario: Hands-free calling and voice command recognition in automotive infotainment head units. IC Role / Device Role / Timing Role: Low-latency audio interface between microphone array and DSP; supports 8–16 kHz voiceband sampling. Use Value: Low group delay mode (87 µs) enables real-time echo cancellation and beamforming without perceptible lag. |
Use Scenario: Speech synthesis and recognition in industrial voice assistants or smart home hubs. IC Role / Device Role / Timing Role: High-SNR analog I/O engine with software mute and volume control for adaptive acoustic feedback management. Use Value: 93 dB DAC dynamic range prevents quantization noise from masking low-amplitude speech features during synthesis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mono audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4531EN | 24-bit mono codec with 80 dB ADC DR, 3.3 V only supply, no low-group-delay mode, 20-lead SSOP package. | Lacks automotive temperature rating (–20°C to +70°C only); requires external reference and separate LDOs. | Choose AK4531EN only for cost-sensitive consumer audio where extended temp range and latency are non-critical. |
| TLV320AIC10IPFB | 16-bit mono codec with 78 dB ADC DR, 3.3 V supply, SPI/I²C interface, no MCLK prescaler, 32-lead TQFP package. | Lower resolution limits fidelity in speech recognition; lacks software clickless mute and A-weighted filtering. | Select TLV320AIC10IPFB when legacy SPI-based controller integration is required and 24-bit performance is not mandatory. |
Compared with AK4531EN and TLV320AIC10IPFB, AD74111YRU-REEL delivers superior dynamic range (85/93 dB), automotive qualification, and deterministic low-latency operation-making it the only option qualified for safety-critical telematics and high-fidelity portable voice systems.
Availability
AD74111YRU-REEL is available at Aetrix Electronics and suitable for automotive infotainment, portable voice recorders, telematic control units, and industrial voice processing systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD74111YRU-REEL 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 industrial, automotive, communications, and healthcare markets since 1965.
The AD74111YRU-REEL belongs to Analog Devices' automotive-qualified audio codec product line, designed specifically for mono voice capture and playback in harsh-environment embedded systems with stringent SNR, latency, and reliability requirements.
FAQ
What is the maximum sample rate supported by the AD74111YRU-REEL?
The AD74111YRU-REEL supports a maximum sample rate of 48 kHz, achieved when the external MCLK is set to 12.288 MHz with all prescalers configured for pass-through (1×). At this rate, the ADC achieves 85 dB dynamic range and the DAC delivers 93 dB dynamic range, both measured over 20 Hz–20 kHz bandwidth with A-weighting applied where specified. Lower rates down to 8 kHz are supported via programmable MCLK division.
Does the AD74111YRU-REEL require external passive components for basic operation?
Yes, the AD74111YRU-REEL requires external components for stable operation: two 100 pF–1 nF NPO/polypropylene capacitors on CAPP and CAPN pins for ADC filtering, a 100 nF ceramic + 10 µF tantalum capacitor on REFCAP for reference decoupling, and RC low-pass networks on VIN and VOUT per Figures 6 and 7 in the datasheet. These are mandatory for achieving specified SNR, THD+N, and stability across temperature.
Can the AD74111YRU-REEL operate with a 3.3 V digital interface while using 2.5 V analog supplies?
Yes, the AD74111YRU-REEL explicitly supports 3.3 V-tolerant digital I/O: DVDD1 accepts 2.5 V ±5% to 3.6 V, allowing direct interfacing with 3.3 V DSPs or microcontrollers without level shifters. Meanwhile, AVDD and DVDD2 remain at 2.5 V ±5% to maintain analog performance and digital core integrity-ensuring isolation between noisy digital logic and sensitive audio conversion paths.
How is master/slave mode selected on the AD74111YRU-REEL?
Master/slave mode is determined by the logic state of the DIN pin at the rising edge of RESET: a high DIN selects slave mode (DCLK/DFS become inputs), while a low DIN selects master mode (DCLK/DFS become outputs). This configuration is latched during hardware reset and cannot be changed in software-requiring a RESET assertion to reconfigure. Mode selection is confirmed in Control Register D bit CRD:3 after initialization.
What is the purpose of the low group delay mode in the AD74111YRU-REEL?
The low group delay mode reduces ADC and DAC filter latency to 87 µs and 55 µs respectively by bypassing portions of the digital filter chain. This is critical for real-time voice applications like echo cancellation and beamforming in telematics, where cumulative system delay must stay below 100 µs to avoid perceptible talk-over effects. Enabling this mode reduces effective sample rate to IMCLK/128 but preserves full 24-bit resolution and dynamic range.
AD74111YRU-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Audio Codec
- Data Interface:
- Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 1 / 1
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 77 / 89
- Dynamic Range, ADCs / DACs (db) Typ:
- 87 / 95
- Voltage - Supply, Analog:
- 2.5V
- Voltage - Supply, Digital:
- 2.5V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
AD74111YRU-REEL FAQ
1.How can I place an order for AD74111YRU-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD74111YRU-REEL 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 AD74111YRU-REEL reliable?
The price and inventory of AD74111YRU-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD74111YRU-REEL is usually 5 days.
3.What payment methods are accepted for AD74111YRU-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD74111YRU-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD74111YRU-REEL?
AD74111YRU-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD74111YRU-REEL 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 AD74111YRU-REEL?
For technical support, including AD74111YRU-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD74111YRU-REEL requirements.
6.How does Aetrix verify that AD74111YRU-REEL is sourced from the original manufacturer or authorized distributors?
All AD74111YRU-REEL 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 AD74111YRU-REEL meets industry standards.
7.What is the process for return or replacement of AD74111YRU-REEL?
All AD74111YRU-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD74111YRU-REEL, 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 AD74111YRU-REEL part is unused and in its original packaging.
Return procedure for AD74111YRU-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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