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Analog Devices Inc. AD7811YRUZ-REEL7
- Part No.:
- AD7811YRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7811YRUZ-REEL7.pdf
- Description:
- IC ADC 10BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,945
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Product details
Overview
AD7811YRUZ-REEL7 from Analog Devices is a 10-bit, 4-channel sampling ADC with successive approximation architecture, operating from a single 2.7 V to 5.5 V supply and delivering 350 kSPS throughput. It integrates an on-chip 2.5 V ±2.5% reference, track-and-hold amplifier, and DSP/microcontroller-compatible serial interface. It supports configurable single-ended or pseudo-differential input modes and is qualified for automotive applications.
For engineers reviewing the AD7811YRUZ-REEL7 datasheet, AD7811YRUZ-REEL7 pinout, AD7811YRUZ-REEL7 application, or AD7811YRUZ-REEL7 equivalent, key selection considerations include its 2.3 µs conversion time, ±1 LSB relative accuracy, 58 dB SNR at 30 kHz input, 4-channel analog input flexibility, and TSSOP-16 packaging suitable for space-constrained embedded sensor interfaces and automotive control units.
Technical Context
The AD7811YRUZ-REEL7 implements a charge redistribution DAC-based successive approximation converter with internal clock oscillator and hardware/software-controlled CONVST triggering. Its serial interface uses RFS/TFS frame sync signals and SCLK for synchronous 10-bit data readout, supporting multipackage bus sharing via A0 address pin and control register address bit.
Input configuration is fully programmable via a 10-bit write-only control register: DIF/SGL and VIN4/AGND bits define four single-ended, three pseudo-differential (vs. VIN4), or two independent pseudo-differential channel pairs. Power management includes full and partial power-down modes triggered by PD1/PD0 bits or automatically after conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - guarantees no missing codes over full scale |
| Sampling Rate | 350 kSPS - enables real-time monitoring of fast transients up to ~175 kHz Nyquist bandwidth |
| Conversion Time | 2.3 µs max - defines minimum inter-conversion interval in high-speed acquisition |
| Relative Accuracy | ±1 LSB max - ensures monotonicity and ≤0.1% end-point linearity error |
| SNR | 58 dB min at fIN = 30 kHz - supports 9.3-bit effective resolution for medium-fidelity signal capture |
| Supply Range | 2.7 V to 5.5 V - interoperable with 3.3 V and 5 V logic domains without level shifters |
| On-Chip Reference | 2.5 V ±2.5% - eliminates external reference component count; disabled when EXTREF = 1 |
Pinout & Package
AD7811YRUZ-REEL7 is housed in a 16-lead Thin Shrink Small Outline Package (TSSOP) with 0.65 mm lead pitch, rated for –40°C to +105°C operation and qualified per AEC-Q100 for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference Input | Accepts external 1.2 V–VDD reference or connects to VDD; enables internal 2.5 V ref when floating |
| CREF | Reference Decoupling | Connects 10 nF capacitor to stabilize internal reference voltage and reduce noise |
| VIN1–VIN4 | Analog Inputs | Four configurable inputs: single-ended vs. AGND or pseudo-differential pairs (e.g., VIN1–VIN2) |
| AGND / DGND | Analog & Digital Ground | Separate ground pins minimize digital switching noise coupling into analog path |
| A0 | Package Address | Hardwired high/low to enable dual-device serial bus sharing with AD7811 or AD7812 |
| CONVST | Convert Start | Falling-edge-triggered; initiates track-to-hold transition and conversion sequence |
| SCLK / RFS / TFS | Serial Interface Clock & Frame Sync | Asynchronous 3-wire interface compatible with TI C5x/C6x, ADSP-21xx, and ARM-based microcontrollers |
| DIN / DOUT | Serial Data I/O | DOUT enters high-impedance after 11th SCLK edge; supports daisy-chain or shared-bus readout |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Input Topology | Software-selectable single-ended (4 channels) or pseudo-differential (3 or 2 pairs) via control register |
| Low-Power Operation | 3.5 mA typical IDD at 3 V; auto power-down reduces current to 1 µA (full) or 350 µA (partial) |
| Integrated Reference | 2.5 V ±2.5% on-chip reference with 50 ppm/°C tempco-eliminates external precision reference cost |
| Multipackage Serial Bus Sharing | A0 pin + control register address bit allows two AD7811/AD7812 devices on same SCLK/RFS/TFS lines |
| Automotive Qualification | AEC-Q100 Grade 3 (–40°C to +105°C) - validated for engine control, battery monitoring, and ADAS sensor front-ends |
Applications
| Automotive Battery Monitoring | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Real-time measurement of 12 V/48 V battery pack cell voltages and temperature sensor outputs under engine cranking conditions. IC Role / Device Role / Timing Role: 4-channel ADC digitizing multiple analog sensor signals with simultaneous sampling capability and low-latency serial output. Use Value: 350 kSPS throughput captures voltage dips during cold-cranking; ±1 LSB accuracy ensures SOC estimation within ±0.5% error band. |
Use Scenario: Modular I/O card acquiring 4 pressure, flow, and position sensor signals in factory automation controllers. IC Role / Device Role / Timing Role: Standalone 10-bit ADC interfacing to ARM Cortex-M7 MCU via SPI-compatible 3-wire serial port. Use Value: On-chip 2.5 V reference removes need for external voltage reference IC; TSSOP-16 footprint fits dense PCB layouts. |
| Medical Patient Vital Sign Logger | Motor Drive Current Sensing |
Use Scenario: Portable ECG/SpO₂ device digitizing biopotential signals from dry electrodes with minimal external components. IC Role / Device Role / Timing Role: Low-power ADC operating from coin-cell or LiPo supply, entering auto power-down between measurements. Use Value: 315 µW @ 10 kSPS enables >1-week battery life; pseudo-differential mode rejects common-mode electrode noise. |
Use Scenario: Inverter board measuring phase currents using shunt resistors in 3-phase BLDC motor drives. IC Role / Device Role / Timing Role: High-speed ADC capturing synchronized current samples across all three phases with <200 ns acquisition time. Use Value: 2.3 µs conversion time supports 100 kHz PWM carrier frequency sampling; channel-to-channel isolation >80 dB prevents crosstalk between phases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7910BRMZ-REEL | 10-bit, 250 kSPS, SPI-compatible, no on-chip reference - requires external 2.5 V ref | Lacks integrated reference and pseudo-differential configuration; lower throughput | Choose when external reference already exists and 250 kSPS suffices; smaller MSOP-10 package |
| ADS7822U | 12-bit, 200 kSPS, SPI interface, 2.7–5.5 V supply, no on-chip ref - Texas Instruments part | Higher resolution but slower; requires external reference and lacks automotive qualification | Prefer for higher-precision non-automotive systems where 12-bit resolution outweighs speed and qualification needs |
Compared with AD7811YRUZ-REEL7, AD7910BRMZ-REEL trades integrated reference and faster throughput for smaller size and simpler interface, while ADS7822U offers greater resolution at the cost of speed, qualification, and system-level BOM complexity.
Availability
AD7811YRUZ-REEL7 is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC analog input modules, portable medical loggers, and motor drive current sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7811YRUZ-REEL7 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The AD7811YRUZ-REEL7 belongs to Analog Devices' legacy high-speed SAR ADC product line, designed specifically for cost-sensitive, space-constrained embedded systems requiring automotive-grade reliability and flexible analog input configuration.
FAQ
What is the maximum sampling rate supported by the AD7811YRUZ-REEL7?
The AD7811YRUZ-REEL7 supports a maximum sampling rate of 350 kSPS, corresponding to a guaranteed maximum conversion time of 2.3 µs. This rate is achievable across the full operating temperature range (–40°C to +105°C) and supply range (2.7 V to 5.5 V), enabling real-time capture of signals up to 175 kHz under Nyquist criteria. The AD7811YRUZ-REEL7 maintains this performance with either internal or external reference configurations.
Does the AD7811YRUZ-REEL7 require an external reference voltage?
No, the AD7811YRUZ-REEL7 includes an integrated 2.5 V ±2.5% reference that is enabled by default. An external reference (1.2 V to VDD) may be applied to the VREF pin only when the EXTREF bit in the control register is set to logic 1 - doing so disables the internal reference and reduces supply current by ~1 mA. The AD7811YRUZ-REEL7 operates correctly with VREF tied directly to VDD if a precise ratio-metric measurement is required.
How many analog input channels does the AD7811YRUZ-REEL7 support, and how are they configured?
The AD7811YRUZ-REEL7 provides four analog input terminals (VIN1–VIN4) that can be configured in three distinct topologies via its 10-bit control register: (1) four single-ended channels referenced to AGND; (2) three pseudo-differential channels (VIN1–VIN4 vs. VIN4); or (3) two independent pseudo-differential pairs (VIN1–VIN2 and VIN3–VIN4). Configuration is determined by the DIF/SGL and VIN4/AGND bits, with channel selection controlled by CH1/CH0 bits.
Is the AD7811YRUZ-REEL7 pin-compatible with other devices in the AD7811/AD7812 family?
The AD7811YRUZ-REEL7 shares identical pinout and electrical behavior with other AD7811 variants (e.g., AD7811YR, AD7811YN) in the same TSSOP-16 package. However, it is not pin-compatible with the AD7812 (20-lead) or AD7811 variants in SOIC or DIP packages. The A0 address pin and serial interface protocol allow coexistence on the same bus with AD7812 devices, but physical layout requires separate footprints for AD7811 vs. AD7812.
What power-saving modes are available on the AD7811YRUZ-REEL7?
The AD7811YRUZ-REEL7 offers three power-saving mechanisms: (1) automatic full power-down after conversion (1 µA typical), (2) automatic partial power-down retaining internal reference bias (350 µA typical), and (3) software-controlled power-up/down via PD1/PD0 bits in the control register. At 10 kSPS, total power dissipation drops to 315 µW with VDD = 3 V - making the AD7811YRUZ-REEL7 suitable for battery-powered applications where duty-cycled acquisition is used.
AD7811YRUZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 350k
- Number of Inputs:
- 3, 4
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7811YRUZ-REEL7 FAQ
1.How can I place an order for AD7811YRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7811YRUZ-REEL7 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 AD7811YRUZ-REEL7 reliable?
The price and inventory of AD7811YRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7811YRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7811YRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7811YRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7811YRUZ-REEL7?
AD7811YRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7811YRUZ-REEL7 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 AD7811YRUZ-REEL7?
For technical support, including AD7811YRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7811YRUZ-REEL7 requirements.
6.How does Aetrix verify that AD7811YRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7811YRUZ-REEL7 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 AD7811YRUZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7811YRUZ-REEL7?
All AD7811YRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7811YRUZ-REEL7, 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 AD7811YRUZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7811YRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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