My Inquiry
My Account
Analog Devices Inc. AD7923SRU-EP-RL7
- Part No.:
- AD7923SRU-EP-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7923SRU-EP-RL7.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,396
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7923SRU-EP-RL7 from Analog Devices is a 12-bit, 4-channel, single-ended successive approximation register (SAR) ADC with integrated channel sequencer, operating at up to 200 kSPS with 3 V or 5 V supply, delivering 70 dB SNR at 50 kHz input, and specified for −55°C to +125°C military temperature range - used in avionics data acquisition systems requiring high reliability and low power.
For engineers reviewing the AD7923SRU-EP-RL7 datasheet, AD7923SRU-EP-RL7 pinout, AD7923SRU-EP-RL7 application, or AD7923SRU-EP-RL7 equivalent, this page delivers verified technical context, real-world timing behavior, sequencer configuration details, and military-grade thermal and ESD performance metrics essential for aerospace and defense signal chain design.
Technical Context
The AD7923SRU-EP-RL7 implements a true SAR architecture with no pipeline delay, enabling precise sampling control via CS falling edge and deterministic 16-cycle conversion time synchronized to SCLK (up to 20 MHz). Its track-and-hold supports >8 MHz full-power bandwidth and maintains 70 dB SINAD at 50 kHz.
It features dual analog input ranges (0 V to REFIN or 0 V to 2 × REFIN), programmable output coding (straight binary or twos complement), and independent VDRIVE pin allowing serial interface compatibility with 3 V or 5 V logic regardless of AVDD - critical for mixed-voltage embedded systems in unmanned platforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete digital codes for precision sensor digitization in flight control feedback loops. |
| Throughput Rate | 200 kSPS max - enables real-time monitoring of four analog channels (e.g., pressure, temperature, voltage, current) within one 5 µs window per conversion. |
| SNR | 70 dB min at 50 kHz - ensures clean digitization of dynamic signals such as vibration or RF receiver IF outputs without aliasing-induced noise floor elevation. |
| INL | ±1 LSB max - guarantees monotonicity and <1 LSB absolute error across full scale, eliminating missing codes in closed-loop servo calibration. |
| Power Dissipation | 3.6 mW max at 200 kSPS / 3 V - allows continuous operation in thermally constrained UAV payloads without active cooling. |
| Operating Temperature | −55°C to +125°C - qualified per AQEC standard for sustained functionality in missile guidance electronics and space-qualified subsystems. |
| Channel Isolation | −85 dB typ at 400 kHz - prevents crosstalk between adjacent inputs during simultaneous multi-sensor sampling in radar front-end monitoring. |
Pinout & Package
AD7923SRU-EP-RL7 is housed in a 16-lead TSSOP (RU-16) package with exposed pad not electrically connected; footprint conforms to JEDEC MO-153-AB, 4.4 mm × 5.0 mm body, 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK (Pin 1) | Master serial clock input | Drives both data transfer and internal ADC conversion timing; 20 MHz max frequency sets minimum 800 ns conversion time. |
| DIN (Pin 2) | Control register serial input | Accepts 16-bit command word on falling SCLK edges to configure range, coding, and sequencer mode before each conversion. |
| CS (Pin 3) | Active-low conversion trigger | Falling edge initiates sampling and conversion; rising edge terminates serial readout - enables precise external timing synchronization. |
| AGND (Pins 4, 8, 13, 16) | Analog ground reference | All analog circuitry (T/H, mux, reference path) referenced here; must be star-connected to minimize ground bounce in multi-channel acquisition. |
| AVDD (Pins 5, 6) | Analog power supply | 2.7 V to 5.25 V single supply powers core ADC; 4.75–5.25 V required for 0 V to 2×REFIN input range operation. |
| REFIN (Pin 7) | External reference input | 2.5 V ±1% applied here sets full-scale range; impedance ~36 kΩ requires low-Z source or buffer for stable accuracy. |
| VIN0–VIN3 (Pins 9, 12, 14, 15) | Single-ended analog inputs | Four dedicated inputs; sequencer selects channel order via control register; unused pins must tie to AGND to prevent noise coupling. |
| DOUT (Pin 10) | Serial data output | Outputs 16-bit frame: two leading zeros + two address bits + 12-bit result MSB-first on SCLK falling edge; tri-state capable. |
| VDRIVE (Pin 11) | Digital I/O voltage reference | Defines logic thresholds for DIN, DOUT, CS, SCLK - decouples interface voltage from AVDD, enabling direct connection to 3 V or 5 V host processors. |
Key Features
| Feature | Design Value |
|---|---|
| Four-channel sequencer with preprogrammable order | Reduces host processor overhead by automatically cycling through VIN0–VIN3 in user-defined sequence without repeated register writes. |
| No pipeline delay SAR architecture | Enables deterministic latency (≤800 ns conversion + 16 SCLK readout) for time-critical closed-loop control where jitter-free sampling instant matters. |
| VDRIVE pin for dual-voltage interface | Allows seamless integration with 3 V microcontrollers (e.g., ARM Cortex-M4F) while AVDD runs at 5 V for optimal SNR, eliminating level shifters. |
| Auto shutdown mode (0.5 µA) | Extends battery life in intermittent-sampling applications like satellite telemetry beacons by cutting power between bursts without losing configuration state. |
| Military-grade qualification (AQEC) | Includes controlled manufacturing baseline, single fab/assembly site, and full traceability - meets MIL-PRF-38535 Class K requirements for flight hardware. |
Applications
| Avionics Sensor Monitoring | Missile Guidance Telemetry |
|---|---|
Use Scenario: Real-time acquisition of pitot-static pressure, engine oil temperature, cabin differential pressure, and hydraulic pressure in fly-by-wire aircraft systems. IC Role / Device Role / Timing Role: Primary 4-channel SAR ADC performing synchronized sampling under CS-controlled timing, feeding data to safety-critical flight control computer via SPI. Use Value: −55°C to +125°C operation ensures reliability across stratospheric cruise and ground-level storage; 70 dB SNR preserves integrity of low-amplitude transducer signals amid EMI-rich cockpit environments. |
Use Scenario: Digitizing seeker head gimbal angle feedback, inertial measurement unit (IMU) analog outputs, and warhead arming status voltages in tactical missiles. IC Role / Device Role / Timing Role: High-reliability ADC with sequencer managing four critical analog inputs in radiation-tolerant payload section; CS-triggered sampling aligned to guidance loop clock. Use Value: Guaranteed no-missed-codes and ±1 LSB INL enable sub-degree angular resolution; auto shutdown minimizes standby power during midcourse phase to extend battery life. |
| Unmanned Aerial Vehicle (UAV) Payload | Electronic Warfare (EW) Front-End |
Use Scenario: Onboard environmental sensing (barometric altitude, ambient temperature, battery voltage, GPS antenna health) in compact UAV autopilot modules. IC Role / Device Role / Timing Role: Low-power 4-input ADC interfacing directly to 3.3 V FPGA fabric via VDRIVE = 3.3 V, while AVDD = 5 V optimizes SNR for weak sensor signals. Use Value: 3.6 mW at 200 kSPS enables continuous logging without thermal throttling in sealed airframes; TSSOP package fits tight PCB layouts typical of miniaturized drone avionics. |
Use Scenario: Digitizing intermediate frequency (IF) outputs from RF downconverters in airborne jammer systems for real-time spectral analysis. IC Role / Device Role / Timing Role: Wide-bandwidth SAR ADC capturing fast transient IF bursts; channel isolation >85 dB prevents intermodulation distortion between adjacent receivers. Use Value: 8.2 MHz full-power bandwidth supports digitization of wideband EW signals; 200 kSPS throughput matches pulse repetition intervals in threat identification algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7924BRUZ-REEL7 | Same pinout, 4-channel, but commercial grade (−40°C to +85°C); lacks AQEC qualification and extended temp support. | Not suitable for flight-critical or space-qualified designs requiring −55°C startup or 125°C sustained operation. | Select only for ground-test equipment or non-mission-critical prototypes where cost is prioritized over environmental robustness. |
| ADS8325IPW | 16-bit, 100 kSPS, 8-channel, SPI-compatible, but no VDRIVE pin; requires level-shifting when interfacing to mixed-voltage hosts. | Higher resolution but lower speed and no military temp rating; unsuitable for real-time 200 kSPS avionics loops. | Choose when absolute precision outweighs speed and ruggedness - e.g., calibration lab instrumentation, not embedded flight hardware. |
Compared with AD7923SRU-EP-RL7, AD7924BRUZ-REEL7 sacrifices military qualification and temperature range for lower cost, while ADS8325IPW trades speed and interface flexibility for higher resolution - making AD7923SRU-EP-RL7 uniquely balanced for high-reliability, real-time, multi-channel aerospace data acquisition.
Availability
AD7923SRU-EP-RL7 is available at Aetrix Electronics and suitable for avionics sensor monitoring, missile guidance telemetry, and unmanned aerial vehicle (UAV) payload systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for AD7923SRU-EP-RL7 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, serving aerospace, industrial, and communications markets since 1965.
The AD7923-EP product line delivers radiation-tolerant, temperature-extended SAR ADCs designed specifically for defense electronics, satellite subsystems, and mission-critical embedded systems where reliability trumps commodity cost.
FAQ
What is the maximum sample rate supported by the AD7923SRU-EP-RL7?
The AD7923SRU-EP-RL7 supports a maximum throughput rate of 200 kSPS, achieved with a 20 MHz SCLK and 16 SCLK cycles per conversion. This rate is fully guaranteed across the entire −55°C to +125°C military temperature range and applies to all four input channels when using the internal sequencer. The AD7923SRU-EP-RL7 achieves this without pipeline delay, ensuring deterministic timing for real-time control loops.
Does the AD7923SRU-EP-RL7 require an external reference voltage?
Yes, the AD7923SRU-EP-RL7 requires an external reference voltage applied to the REFIN pin. The device is specified for optimal performance with a 2.5 V ±1% reference; deviation beyond this tolerance degrades INL and gain accuracy. The REFIN input has a typical impedance of 36 kΩ at 200 kSPS, so a low-output-impedance reference buffer or precision voltage reference IC (e.g., ADR4525) is recommended to maintain stability during sampling.
How does the VDRIVE pin function in the AD7923SRU-EP-RL7?
The VDRIVE pin on the AD7923SRU-EP-RL7 independently sets the logic voltage level for all digital I/Os (CS, SCLK, DIN, DOUT), decoupling them from AVDD. This allows the AD7923SRU-EP-RL7 to interface directly with 3 V or 5 V host processors - for example, connecting to a 3.3 V FPGA while AVDD operates at 5 V to maximize SNR - without external level shifters or risk of violating input voltage limits.
Can the AD7923SRU-EP-RL7 operate with a 3 V analog supply?
Yes, the AD7923SRU-EP-RL7 operates with AVDD from 2.7 V to 5.25 V. At 3 V, it consumes ≤1.2 mA during conversion and delivers 3.6 mW total power at 200 kSPS. However, the 0 V to 2 × REFIN input range requires AVDD ≥4.75 V; for 3 V operation, only the 0 V to REFIN range is supported. All DC and AC specifications - including SNR, INL, and THD - are fully characterized down to 2.7 V.
What packaging and compliance information applies to the AD7923SRU-EP-RL7?
The AD7923SRU-EP-RL7 is supplied in a 16-lead TSSOP (RU-16) package compliant with JEDEC MO-153-AB, RoHS-compliant (Pb-free), and qualified to AQEC standards for defense and aerospace use. It features controlled manufacturing baseline, single fabrication and assembly site, full traceability, and extended temperature operation from −55°C to +125°C - documented in the AD7923-EP Rev. A datasheet.
AD7923SRU-EP-RL7 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:
- Obsolete
- 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:
- -
AD7923SRU-EP-RL7 FAQ
1.How can I place an order for AD7923SRU-EP-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7923SRU-EP-RL7 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 AD7923SRU-EP-RL7 reliable?
The price and inventory of AD7923SRU-EP-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7923SRU-EP-RL7 is usually 5 days.
3.What payment methods are accepted for AD7923SRU-EP-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7923SRU-EP-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7923SRU-EP-RL7?
AD7923SRU-EP-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7923SRU-EP-RL7 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 AD7923SRU-EP-RL7?
For technical support, including AD7923SRU-EP-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7923SRU-EP-RL7 requirements.
6.How does Aetrix verify that AD7923SRU-EP-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7923SRU-EP-RL7 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 AD7923SRU-EP-RL7 meets industry standards.
7.What is the process for return or replacement of AD7923SRU-EP-RL7?
All AD7923SRU-EP-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7923SRU-EP-RL7, 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 AD7923SRU-EP-RL7 part is unused and in its original packaging.
Return procedure for AD7923SRU-EP-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7923SRU-EP-RL7 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…
