My Inquiry
My Account
Analog Devices Inc. AD7923BRUZ-REEL
- Part No.:
- AD7923BRUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7923BRUZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,444
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7923BRUZ-REEL from Analog Devices is a 12-bit, 4-channel, successive approximation register (SAR) analog-to-digital converter with integrated channel sequencer, operating at up to 200 kSPS with 2.7 V to 5.25 V single-supply power. It features 70 dB minimum SNR at 50 kHz input, 0 V to REFIN or 0 V to 2 × REFIN input range selection, and SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface. It is used in automotive sensor signal acquisition systems requiring high channel density and low power.
For engineers reviewing the AD7923BRUZ-REEL datasheet, AD7923BRUZ-REEL pinout, AD7923BRUZ-REEL application, or AD7923BRUZ-REEL equivalent, key selection criteria include sequenced multi-channel sampling capability, VDRIVE logic-level independence, 0.5 μA full shutdown current, and TSSOP-16 packaging qualified for −40°C to +125°C automotive operation.
Technical Context
The AD7923BRUZ-REEL implements a SAR architecture with track-and-hold amplifier supporting >8 MHz input bandwidth and aperture jitter of 50 ps typ. Conversion timing is fully controlled by external SCLK (up to 20 MHz), enabling precise sampling on CS falling edge and eliminating pipeline delay.
Its sequencer logic supports preprogrammed channel cycling (VIN0–VIN3) via SEQ1/SEQ0 bits and ADD1/ADD0 address bits, while the VDRIVE pin decouples digital I/O voltage (2.7 V to 5.25 V) from AVDD, allowing direct interfacing with 3 V or 5 V microcontrollers without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precision measurement of analog sensor signals. |
| Throughput Rate | 200 kSPS max - supports real-time sampling of fast-changing automotive or industrial signals such as engine knock or motor phase currents. |
| Input Channels | 4 single-ended (VIN0–VIN3) with hardware sequencer - enables automatic round-robin conversion without host CPU intervention. |
| SNR | 70 dB min at 50 kHz - ensures accurate digitization of medium-frequency sensor outputs with minimal noise floor impact. |
| Power Dissipation | 3.6 mW max at 200 kSPS / 3 V - enables battery-powered or thermally constrained embedded designs without active cooling. |
| Shutdown Current | 0.5 μA max - allows ultra-low-power sleep modes in always-on monitoring applications like vehicle battery management. |
| Supply Range | AVDD = 2.7 V to 5.25 V; VDRIVE = 2.7 V to 5.25 V - supports mixed-voltage system integration with independent logic interface voltage control. |
Pinout & Package
AD7923BRUZ-REEL is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch), qualified for automotive applications per AEC-Q100 and rated for −40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK | Serial clock input | Master clock for both data transfer and internal conversion timing; supports up to 20 MHz for 800 ns conversion time. |
| DIN | Data input | Loads 12-bit control register on falling SCLK edges; enables dynamic configuration of range, coding, sequencer, and power mode per conversion. |
| CS | Chip select (active low) | Initiates conversion and frames serial data; sampling occurs on its falling edge - critical for deterministic timing in control loops. |
| AGND (Pins 4, 8, 13, 16) | Analog ground reference | Common return for all analog circuitry; multiple pins reduce ground impedance and improve noise immunity in multi-channel acquisition. |
| AVDD (Pins 5, 6) | Analog power supply | Single 2.7–5.25 V supply powers analog core; dual pins lower IR drop and enhance PSRR for stable reference tracking. |
| REFIN | External reference input | Accepts 2.5 V ±1% reference; defines full-scale range (0–REFIN or 0–2×REFIN); 36 kΩ input impedance simplifies driver design. |
| VIN0–VIN3 | Analog input channels | Four single-ended inputs; internally multiplexed; channel-to-channel isolation ≥85 dB prevents crosstalk in simultaneous-sensing applications. |
| DOUT | Serial data output | Outputs two leading zeros, two channel address bits, then 12-bit result MSB-first; compatible with standard SPI master interfaces. |
| VDRIVE | Digital I/O supply | Decouples logic interface voltage from AVDD; permits direct connection to 3 V or 5 V processors without level translation circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture provides deterministic, one-shot conversion with sampling instant precisely controlled by CS falling edge - essential for closed-loop feedback timing. |
| VDRIVE logic-level independence | Allows serial interface to operate at 3 V or 5 V regardless of AVDD voltage - eliminates external level shifters in mixed-supply systems. |
| Configurable input range | Software-selectable 0 V to REFIN or 0 V to 2 × REFIN via RANGE bit - supports both unipolar sensors and differential-biased transducer interfaces. |
| Channel sequencer | Hardware-programmable sequence (e.g., VIN0→VIN1→VIN2→VIN3→repeat) reduces host processor overhead and ensures consistent channel ordering across conversions. |
| Automotive qualification | AEC-Q100 qualified with guaranteed operation from −40°C to +125°C - suitable for under-hood and transmission-control applications without derating. |
Applications
| Engine Control Unit (ECU) Sensor Hub | Industrial Motor Drive Feedback |
|---|---|
Use Scenario: Simultaneous acquisition of throttle position, coolant temperature, intake air pressure, and oxygen sensor signals in an automotive ECU. IC Role / Device Role / Timing Role: 4-channel SAR ADC with sequencer performs synchronized, low-latency sampling of analog sensor outputs for real-time engine calibration and emissions control. Use Value: Eliminates need for four discrete ADCs or external MUX control logic; 200 kSPS throughput meets ISO 26262 ASIL-B timing requirements for safety-critical sampling. |
Use Scenario: Monitoring phase currents, DC bus voltage, heatsink temperature, and rotor position feedback in a 3-phase inverter drive. IC Role / Device Role / Timing Role: Single-chip analog front-end acquires four critical motor control parameters with channel-to-channel isolation >85 dB to prevent cross-coupling errors. Use Value: Reduces BOM count and PCB area vs. discrete solutions; 70 dB SNR ensures accurate current reconstruction for field-oriented control (FOC) algorithms. |
| Battery Management System (BMS) Monitor | Medical Patient Vital Sign Acquisition |
Use Scenario: Measuring cell voltages, pack current, ambient temperature, and insulation resistance in an EV traction battery pack. IC Role / Device Role / Timing Role: High-accuracy, low-power ADC captures slow- and fast-varying parameters with programmable input range to accommodate varying sensor output spans. Use Value: 0.5 μA shutdown current extends standby life; 12-bit resolution enables <1 mV cell voltage resolution required for state-of-charge estimation. |
Use Scenario: Digitizing ECG leads, respiration belt output, skin temperature, and SpO₂ photodiode signals in portable patient monitors. IC Role / Device Role / Timing Role: Multi-channel acquisition IC provides isolated, low-noise sampling of biopotential and physiological transducers in compact wearable form factors. Use Value: 3.6 mW power at 3 V enables >72-hour battery life; 50 ps aperture jitter preserves waveform fidelity for arrhythmia detection algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7914BRUZ-REEL | 10-bit resolution, identical 4-channel sequencer, same TSSOP-16 package and pinout. | Limited to lower-precision applications such as basic temperature or position sensing where 12-bit resolution is unnecessary. | Select when cost sensitivity outweighs resolution requirement and SNR >65 dB is sufficient. |
| ADS7953IRHBT | Texas Instruments part: 12-bit, 16-channel, SPI interface, but requires 3.3 V only (no VDRIVE), higher typical IDD (1.8 mA at 1 MSPS). | Supports larger channel counts but lacks automotive qualification and has no VDRIVE flexibility for mixed-voltage hosts. | Choose for non-automotive industrial systems needing >4 channels and willing to add level-shifting for 5 V controllers. |
Compared with AD7923BRUZ-REEL, AD7914BRUZ-REEL trades resolution for lower cost and power, while ADS7953IRHBT expands channel count at the expense of automotive compliance and voltage-flexible interfacing - making AD7923BRUZ-REEL optimal for space-constrained, safety-rated, mixed-supply automotive sensor nodes.
Availability
AD7923BRUZ-REEL is available at Aetrix Electronics and suitable for automotive sensor hubs, industrial motor drive feedback systems, and battery management monitors requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for AD7923BRUZ-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, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.
The AD7923BRUZ-REEL belongs to Analog Devices' precision SAR ADC product line, engineered specifically for automotive and industrial applications demanding high accuracy, low power, and robust operation across extended temperature ranges.
FAQ
What is the maximum sampling rate supported by the AD7923BRUZ-REEL?
The AD7923BRUZ-REEL supports a maximum throughput rate of 200 kSPS, achieved with a 20 MHz SCLK. At this rate, conversion time is as short as 800 ns, and total power dissipation remains 3.6 mW at 3 V supply. This performance is maintained across the full −40°C to +125°C automotive temperature range.
Does the AD7923BRUZ-REEL require an external reference voltage?
Yes, the AD7923BRUZ-REEL requires an external reference applied to the REFIN pin. For specified performance, REFIN must be 2.5 V ±1%. The device supports two input ranges: 0 V to REFIN (RANGE bit = 1) or 0 V to 2 × REFIN (RANGE bit = 0, with AVDD ≥ 4.75 V). Internal reference is not provided.
How does the sequencer function work on the AD7923BRUZ-REEL?
The AD7923BRUZ-REEL sequencer is configured via SEQ1 and SEQ0 bits in the control register. With SEQ1=1 and SEQ0=1, it performs continuous conversions across a preselected sequence of channels (e.g., VIN0 → VIN1 → VIN2 → VIN3 → repeat), using ADD1/ADD0 to define the final channel. This reduces host processor overhead and ensures deterministic channel ordering.
Is the AD7923BRUZ-REEL pin-compatible with other devices in the AD79xx family?
The AD7923BRUZ-REEL shares the same 16-lead TSSOP package and pinout with AD7914BRUZ-REEL (10-bit) and AD7924BRUZ-REEL (12-bit with pseudo-differential inputs), enabling drop-in upgrades or downgrades within the same footprint. However, AD7924 uses different input structure and control register mapping, so firmware changes are required.
What power management modes does the AD7923BRUZ-REEL support?
The AD7923BRUZ-REEL offers three power modes controlled by PM1/PM0 bits: Normal (full power, 200 kSPS), Auto Shutdown (enters full shutdown after each conversion, 1 µs wake-up), and Full Shutdown (0.5 μA max, retains register contents). These modes allow dynamic power scaling based on real-time sampling demand.
AD7923BRUZ-REEL 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:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7923BRUZ-REEL FAQ
1.How can I place an order for AD7923BRUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7923BRUZ-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 AD7923BRUZ-REEL reliable?
The price and inventory of AD7923BRUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7923BRUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7923BRUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7923BRUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7923BRUZ-REEL?
AD7923BRUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7923BRUZ-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 AD7923BRUZ-REEL?
For technical support, including AD7923BRUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7923BRUZ-REEL requirements.
6.How does Aetrix verify that AD7923BRUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7923BRUZ-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 AD7923BRUZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7923BRUZ-REEL?
All AD7923BRUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7923BRUZ-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 AD7923BRUZ-REEL part is unused and in its original packaging.
Return procedure for AD7923BRUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7923BRUZ-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…
