My Inquiry
My Account
Analog Devices Inc. AD7812YRUZ-REEL
- Part No.:
- AD7812YRUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7812YRUZ-REEL.pdf
- Description:
- IC ADC 10BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,919
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7812YRUZ-REEL from Analog Devices is a 10-bit, 8-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 is used in industrial sensor signal conditioning where multi-channel analog monitoring must coexist with low power and compact PCB layout.
For engineers reviewing the AD7812YRUZ-REEL datasheet, AD7812YRUZ-REEL pinout, AD7812YRUZ-REEL application, or AD7812YRUZ-REEL equivalent, key selection considerations include its 8 single-ended / 4 pseudo-differential input configuration, 2.3 µs conversion time, ±1 LSB relative accuracy, 58 dB SNR at 30 kHz input, and TSSOP-20 package compatibility with high-density mixed-signal designs.
Technical Context
The AD7812YRUZ-REEL implements a charge redistribution DAC-based successive approximation converter with internal clock oscillator and configurable input multiplexer. Its control register enables software-selectable channel mapping (VIN1–VIN8), single-ended vs. pseudo-differential mode, external reference enable (EXTREF bit), and power-down state control (PD1/PD0).
It supports hardware-triggered conversion via CONVST falling edge and features dual ground separation (AGND/DGND), dedicated frame sync signals (RFS/TFS), and bus-sharing capability using the A0 address pin. The device enters full power-down (1 µA) or partial power-down (350 µA) automatically between conversions when configured via control register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - guarantees no missing codes across full temperature range (−40°C to +105°C) |
| Sampling Rate | 350 kSPS - enables real-time capture of signals up to ~175 kHz Nyquist bandwidth |
| Conversion Time | 2.3 µs - defines minimum inter-conversion interval for maximum throughput operation |
| Relative Accuracy | ±1 LSB - ensures monotonicity and ≤0.1% end-point linearity error in precision measurement |
| SNR @ 30 kHz | 58 dB - supports 9.3 effective bits for dynamic signal acquisition in noisy environments |
| Supply Range | 2.7 V to 5.5 V - allows direct interfacing with 3.3 V or 5 V logic and mixed-voltage systems |
| On-Chip Reference | 2.5 V ±2.5% - eliminates need for external reference in cost-sensitive applications; powers down when EXTREF = 1 |
Pinout & Package
AD7812YRUZ-REEL is housed in a 20-lead Thin Shrink Small Outline Package (TSSOP), 4.4 mm × 6.5 mm body, 0.65 mm pitch, moisture sensitivity level 1 (MSL1), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference Input | Accepts external reference (1.2 V to VDD) or connects to VDD; EXTREF bit must be set to use external source |
| CREF | Reference Decoupling | Requires 10 nF capacitor to AGND to stabilize internal 2.5 V reference and reduce noise |
| VIN1–VIN8 | Analog Inputs | Eight single-ended inputs (0 V to VREF); configurable as four pseudo-differential pairs (e.g., VIN1+/VIN2−) |
| A0 | Hardware Address | Hardwired high/low to enable two AD7812 devices on same serial bus without software arbitration |
| CONVST | Conversion Trigger | Falling-edge sensitive; initiates track-to-hold transition and starts conversion sequence |
| TFS/RFS | Serial Frame Sync | TFS falling edge latches 10-bit control byte; RFS rising edge enables serial read timing for DSP compatibility |
| DOUT/DIN | Serial Data I/O | DOUT outputs 10-bit result on SCLK rising edge; DIN accepts control byte on SCLK falling edge |
| AGND/DGND | Ground Separation | Separate analog/digital grounds minimize coupling noise; connected at single point near device |
Key Features
| Feature | Design Value |
|---|---|
| 8-channel programmable input mux | Supports flexible sensor routing: 8 single-ended or 4 pseudo-differential channels via control register |
| Auto power-down modes | Reduces current to 1 µA (full) or 350 µA (partial) between conversions-critical for battery-powered DAQ |
| DSP/microcontroller serial interface | 3-wire synchronous protocol (SCLK, TFS/RFS, DOUT/DIN) compatible with TI C2000, STM32, and ADSP families |
| On-chip 2.5 V reference | ±2.5% initial error and 50 ppm/°C drift-enables self-contained operation without external reference IC |
| Channel-to-channel isolation | −80 dB typical - prevents crosstalk in simultaneous multi-sensor acquisition (e.g., thermocouple + RTD) |
Applications
| Industrial Motor Control | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: Real-time acquisition of phase currents, DC-link voltage, and temperature sensors in 3-phase inverter drives. IC Role / Device Role / Timing Role: 8-channel ADC digitizes analog feedback signals with 2.3 µs conversion time to support 20 kHz PWM loop rates. Use Value: Single AD7812YRUZ-REEL replaces multiple discrete ADCs, reducing BOM count and board area while maintaining ±1 LSB linearity across −40°C to +105°C. |
Use Scenario: Simultaneous voltage sampling across 6–12 Li-ion cell strings in EV battery management systems (BMS). IC Role / Device Role / Timing Role: Configured in pseudo-differential mode to reject common-mode noise from high-current switching transients. Use Value: −80 dB channel isolation and 58 dB SNR ensure accurate cell voltage delta detection (<10 mV resolution) under EMI-heavy vehicle environments. |
| Portable Medical Instrumentation | Programmable Logic Controller (PLC) I/O Modules |
|
Use Scenario: Multi-parameter patient monitoring (ECG, SpO₂, respiration) in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-power 350 kSPS sampling captures bio-signals with minimal thermal drift using internal 2.5 V reference. Use Value: 10 mW typical power at 3 V supply and automatic power-down extend battery life beyond 8 hours per charge. |
Use Scenario: Analog input expansion for modular PLC backplanes requiring isolated, calibrated sensor inputs. IC Role / Device Role / Timing Role: Interfaces with opto-isolated SPI buses and supports daisy-chained configurations via A0 address pin. Use Value: TSSOP-20 footprint fits high-density carrier boards; software-configurable input ranges simplify firmware support for diverse field sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7910BRMZ-REEL | 10-bit, 1-MSPS SAR ADC; no on-chip reference; requires external REF; 12-lead MSOP | Higher speed but lacks integrated reference and 8-channel mux; suited for single-channel high-speed sampling | Select when throughput >500 kSPS is required and external reference is already present in system |
| ADS7957IRHBT | 12-bit, 1-MSPS, 8-channel ADC; integrated reference; SPI interface; 32-pin QFN | 2-bit higher resolution and faster rate, but larger package and higher power (2.5 mW vs. 10.5 mW at 3 V) | Choose when 12-bit precision is mandatory and board space allows 5 mm × 5 mm QFN |
Compared with AD7812YRUZ-REEL, AD7910BRMZ-REEL trades integrated reference and channel count for speed and smaller footprint, while ADS7957IRHBT offers higher resolution and modern SPI timing at the cost of power and package size-making AD7812YRUZ-REEL optimal for cost-constrained, medium-speed, self-contained 8-channel systems.
Availability
AD7812YRUZ-REEL is available at Aetrix Electronics and suitable for industrial motor control, automotive battery monitoring, portable medical instrumentation, and PLC I/O modules requiring stable component supply across extended temperature and long production lifecycles.
Supply support for AD7812YRUZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The AD7811/AD7812 product line was designed for low-power, multi-channel data acquisition in space- and cost-constrained embedded systems-emphasizing integration (on-chip reference, T/H, serial interface), automotive qualification (−40°C to +105°C), and ease of DSP interfacing.
FAQ
What is the maximum sampling rate supported by the AD7812YRUZ-REEL?
The AD7812YRUZ-REEL supports a maximum throughput rate of 350 kSPS, corresponding to a guaranteed 2.3 µs conversion time. This rate is achievable across the full specified temperature range (−40°C to +105°C) and supply range (2.7 V to 5.5 V). At lower throughput (e.g., 10 kSPS), the device automatically enters partial power-down mode, reducing IDD to 350 µA and power dissipation to 315 µW at 3 V supply.
Does the AD7812YRUZ-REEL require an external reference voltage?
No, the AD7812YRUZ-REEL includes an internal 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 circuitry and reduces current consumption by ~1 mA. For most applications, the internal reference provides sufficient accuracy and simplifies design.
How many analog input channels does the AD7812YRUZ-REEL support, and how are they configured?
The AD7812YRUZ-REEL supports eight analog input pins (VIN1–VIN8), configurable via its 10-bit control register as either eight single-ended inputs referenced to AGND or four pseudo-differential pairs (e.g., VIN1+/VIN2−). Additional configurations include seven pseudo-differential inputs referenced to VIN8. Channel selection is controlled by CH2/CH1/CH0 bits and DIF/SGL/VIN8-AGND settings per Table II in the datasheet.
What package type is used for the AD7812YRUZ-REEL, and what are its key mechanical properties?
The AD7812YRUZ-REEL is supplied in a 20-lead Thin Shrink Small Outline Package (TSSOP), designated RU-20 in Analog Devices' ordering guide. It measures 4.4 mm × 6.5 mm with 0.65 mm lead pitch, has a maximum height of 1.2 mm, and is rated MSL1 (unlimited floor life). The package supports standard reflow soldering profiles and is RoHS-compliant and lead-free.
Can multiple AD7812YRUZ-REEL devices share the same serial bus?
Yes, two AD7812YRUZ-REEL devices can share the same serial bus using the hardware A0 pin and software address bit in the control register. When A0 is hardwired high on one device and low on the other, and their respective control bytes contain matching A0 bits, only the addressed device responds to TFS/RFS framing-enabling coordinated 16-channel acquisition without additional GPIO or bus switches.
AD7812YRUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-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:
- 7, 8
- 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:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7812YRUZ-REEL FAQ
1.How can I place an order for AD7812YRUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7812YRUZ-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 AD7812YRUZ-REEL reliable?
The price and inventory of AD7812YRUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7812YRUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7812YRUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7812YRUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7812YRUZ-REEL?
AD7812YRUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7812YRUZ-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 AD7812YRUZ-REEL?
For technical support, including AD7812YRUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7812YRUZ-REEL requirements.
6.How does Aetrix verify that AD7812YRUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7812YRUZ-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 AD7812YRUZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7812YRUZ-REEL?
All AD7812YRUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7812YRUZ-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 AD7812YRUZ-REEL part is unused and in its original packaging.
Return procedure for AD7812YRUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7812YRUZ-REEL Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
