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Analog Devices Inc. ADT7316ARQZ-REEL
- Part No.:
- ADT7316ARQZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADT7316ARQZ-REEL.pdf
- Description:
- SENSOR DIGITAL -40C-120C 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,082
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Product details
Overview
ADT7316ARQZ-REEL from Analog Devices is a precision digital temperature sensor with integrated quad 12-bit voltage-output DACs in a single 16-lead QSOP package. It delivers ±0.5°C temperature accuracy over −40°C to +120°C, features buffered rail-to-rail DAC outputs (0 V to 2 VREF), and supports both I²C and SPI serial interfaces - enabling closed-loop thermal management and analog bias control in compact embedded systems.
For engineers reviewing the ADT7316ARQZ-REEL datasheet, ADT7316ARQZ-REEL pinout, ADT7316ARQZ-REEL application, or ADT7316ARQZ-REEL equivalent, key selection criteria include guaranteed monotonic 12-bit DAC performance, internal 2.28 V reference option, simultaneous LDAC-controlled output update, and dual-interface flexibility for system-level integration with microcontrollers or FPGAs.
Technical Context
The ADT7316ARQZ-REEL integrates a 10-bit temperature-to-digital converter (0.25°C resolution) and four independent 12-bit DACs sharing two configurable reference inputs (VREF-AB and VREF-CD). Its on-chip bandgap sensor digitizes die temperature with ±0.5°C accuracy across 0°C to +85°C, while conversion timing supports both slow (11.4 ms) and fast (2.14 ms) ADC modes with optional 16-sample averaging.
Serial communication uses either 4-wire SPI (CS/SCLK/SDA/DOUT) or 2-wire I²C (SCL/SDA), with SMBus packet error checking (PEC) support and programmable I²C address via ADD pin. The device includes double-buffered DAC registers, power-on reset to 0 V, and <10 μA power-down current - all operating from a single 2.7 V to 5.5 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Accuracy | ±0.5°C (0°C to +85°C); enables high-fidelity thermal monitoring without external calibration |
| DAC Resolution | 12 bits per channel; provides 4096 discrete output levels for precise analog biasing or calibration |
| DAC Output Range | 0 V to 2 × VREF; supports full-scale output up to 4.56 V with internal 2.28 V reference |
| Settling Time | 8 μs typical (1/4 to 3/4 scale); ensures rapid analog response for dynamic control loops |
| Supply Voltage | 2.7 V to 5.5 V; compatible with common industrial and battery-powered rails |
| Power-Down Current | <10 μA; minimizes quiescent consumption during idle periods in portable systems |
| Interface Support | I²C (fast-mode, 400 kHz) and SPI (4-wire); allows coexistence with diverse host controllers |
Pinout & Package
ADT7316ARQZ-REEL is housed in a 16-lead QSOP (Quarter-Size Outline Package) with 0.65 mm lead pitch and exposed pad for thermal dissipation. Pin layout follows standard top-view orientation with VOUT-A/VOUT-B on left, VOUT-C/VOUT-D on right, and serial interface pins centrally located.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT-A (Pin 2) | DAC A buffered analog output | Rail-to-rail output amplifier drives loads directly; no external op-amp needed for most bias applications |
| VOUT-B (Pin 1) | DAC B buffered analog output | Independent output with same drive capability as VOUT-A; supports dual-channel analog control |
| VREF-AB (Pin 3) | Reference input for DAC A/B | Configurable buffered/unbuffered input; sets full-scale range for first DAC pair |
| CS (Pin 4) | SPI chip select | Active-low frame sync; must be held high in I²C mode to avoid bus contention |
| GND (Pin 5) | Analog/digital ground reference | Single-point return path for all circuitry; requires low-impedance PCB connection |
| VDD (Pin 6) | Positive supply input | 2.7 V–5.5 V operation; decoupling capacitor mandatory near pin for noise immunity |
| D+ / D− (Pins 7/8) | External temperature sensor interface | Supports NPN/PNP transistor-based remote sensing (e.g., 2N3906) |
| LDAC (Pin 9) | Load DAC active-low control | Falling edge triggers simultaneous update of all DAC outputs; enables synchronized analog control |
| INT/INT (Pin 10) | Over-limit interrupt output | Open-drain signal asserts when temperature or VDD exceeds programmed thresholds |
| DOUT/ADD (Pin 11) | SPI data out / I²C address select | Shared function: outputs register data in SPI mode; sets I²C address (1001000/010/011) when floating/high/low |
| SDA/DIN (Pin 12) | I²C data / SPI data in | Open-drain bidirectional data line; pull-up resistor required for proper logic levels |
| SCL/SCLK (Pin 13) | I²C clock / SPI clock | Shared clock input; open-drain with external pull-up; defines serial timing for both protocols |
| VREF-CD (Pin 14) | Reference input for DAC C/D | Independent reference path for second DAC pair; enables differential or split-range configurations |
| VOUT-D (Pin 15) | DAC D buffered analog output | Final DAC output; identical electrical specs to VOUT-A–C for consistent system design |
| VOUT-C (Pin 16) | DAC C buffered analog output | Third independent output; supports 4-channel analog generation from single IC |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed monotonic DAC transfer | Ensures no code-dependent output reversal across full 12-bit range - critical for closed-loop stability |
| Internal 2.28 V reference | Eliminates need for external precision reference; reduces BOM count and board area in space-constrained designs |
| Simultaneous LDAC update | Enables atomic multi-channel analog output changes - avoids transient mismatches in phase-sensitive systems |
| On-chip rail-to-rail output buffers | Drives capacitive loads up to 200 pF directly; removes requirement for external op-amps in most applications |
| Power-on reset to 0 V | Prevents undefined DAC output states at startup - essential for safe initialization in power-sensitive systems |
| Two-reference architecture (VREF-AB/VREF-CD) | Allows independent scaling of DAC pairs - supports dual-voltage domain control (e.g., bias + offset compensation) |
Applications
| Server Thermal Management | Industrial PLC Analog I/O |
|---|---|
Use Scenario: Real-time CPU/GPU junction temperature monitoring and fan speed control in 1U rack servers. IC Role / Device Role / Timing Role: Temperature sensor provides die temperature feedback; DACs generate PWM-equivalent analog signals to drive fan drivers and voltage references for ADC calibration. Use Value: ±0.5°C accuracy enables tighter thermal throttling margins; quad DACs replace four discrete DAC ICs, reducing footprint by >60%. |
Use Scenario: Programmable analog output modules in modular PLC backplanes requiring 4-channel 0–10 V or 4–20 mA loop drivers. IC Role / Device Role / Timing Role: DACs serve as precision voltage sources; internal temperature sensor monitors module ambient for derating and self-calibration. Use Value: 12-bit resolution meets industrial 0.1% FS accuracy requirements; SPI/I²C dual interface simplifies firmware reuse across legacy and new controller platforms. |
| Medical Instrument Calibration | Automotive Cabin Climate Control |
Use Scenario: Offset/gain trimming of analog front-ends in portable ECG and pulse oximetry devices. IC Role / Device Role / Timing Role: DACs adjust sensor bias points and amplifier offsets; temperature sensor validates calibration stability across operating temperature range. Use Value: On-chip 2.28 V reference eliminates external reference drift; <10 μA shutdown current extends battery life in handheld diagnostics. |
Use Scenario: Closed-loop cabin temperature regulation using thermistor feedback and Peltier driver bias control in automotive HVAC modules. IC Role / Device Role / Timing Role: Internal temperature sensor monitors MCU die temperature; DACs set proportional heating/cooling actuator voltages based on PID output. Use Value: −40°C to +120°C operating range matches automotive under-hood environments; simultaneous LDAC update prevents thermal transient artifacts during mode transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature-sensing and multi-channel DAC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADT7317ARQZ-REEL | Quad 10-bit DACs (vs. 12-bit); ±0.5 LSB relative accuracy; lower resolution but reduced code density | Lower-cost thermal monitoring where 10-bit DAC granularity suffices (e.g., basic fan control) | Select when 10-bit resolution meets system accuracy needs and cost sensitivity outweighs precision requirements |
| ADT7318ARQZ-REEL | Quad 8-bit DACs (vs. 12-bit); ±0.15 LSB relative accuracy; fastest settling (6 μs) but coarsest quantization | High-speed, low-resolution analog control (e.g., LED brightness dimming with coarse steps) | Choose for applications prioritizing speed over precision and where 256-step resolution is adequate |
Compared with ADT7316ARQZ-REEL, ADT7317ARQZ-REEL trades 2 bits of DAC resolution for lower cost and marginally better DNL, while ADT7318ARQZ-REEL sacrifices resolution further for sub-μs settling - making the ADT7316ARQZ-REEL optimal for systems demanding highest analog fidelity within the family.
Availability
ADT7316ARQZ-REEL is available at Aetrix Electronics and suitable for server thermal management, industrial PLC analog I/O, medical instrument calibration, automotive cabin climate control, and portable test equipment requiring stable component supply and long-term production continuity.
Supply support for ADT7316ARQZ-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 design centers worldwide.
The ADT7316ARQZ-REEL belongs to Analog Devices' precision temperature sensor and integrated DAC product line, engineered for applications demanding simultaneous high-accuracy thermal measurement and multi-channel analog control in space- and power-constrained environments.
FAQ
What is the temperature accuracy specification of the ADT7316ARQZ-REEL over its full operating range?
The ADT7316ARQZ-REEL achieves ±0.5°C accuracy over 0°C to +85°C when using the internal temperature sensor and internal 2.28 V reference. At extended temperatures (−40°C to +120°C), accuracy degrades to ±2°C (typical) and ±5°C (max), as specified in Table 1 of the Rev. B datasheet. This performance is measured with averaging enabled and applies to the internal die sensor only - external transistor sensing has wider tolerances.
Does the ADT7316ARQZ-REEL support simultaneous update of all four DAC outputs?
Yes, the ADT7316ARQZ-REEL supports simultaneous DAC output updates via its LDAC (Load DAC) pin (Pin 9) or software-controlled LDAC function. A falling edge on the LDAC pin transfers data from all four input registers to their respective DAC registers, ensuring atomic, glitch-free multi-channel output changes - critical for coordinated analog control in servo or power management systems.
Can the ADT7316ARQZ-REEL operate with only the internal reference, or does it require external reference connections?
The ADT7316ARQZ-REEL can operate fully with its internal 2.28 V reference - no external components are required for basic functionality. VREF-AB (Pin 3) and VREF-CD (Pin 14) default to internal reference on power-up. External references are optional and used only when higher precision, custom scaling, or separate reference domains for DAC pairs are needed.
What serial interface protocols does the ADT7316ARQZ-REEL support, and how are they selected?
The ADT7316ARQZ-REEL supports both I²C (2-wire) and SPI (4-wire) protocols. Interface selection is hardware-configured: tie CS (Pin 4) high and use SCL/SDA for I²C; assert CS low and use SCLK/SDA/DOUT for SPI. The ADD pin (Pin 11) sets I²C address (1001000/010/011), while SPI operation ignores this pin. Both interfaces share SCL/SCLK and SDA/DIN pins physically.
Is the ADT7316ARQZ-REEL pin-compatible with other members of the ADT7316/ADT7317/ADT7318 family?
Yes, the ADT7316ARQZ-REEL is pin-compatible with ADT7317ARQZ-REEL and ADT7318ARQZ-REEL - all share identical 16-lead QSOP packaging, pin assignments, and register maps. This allows direct substitution in existing designs when DAC resolution requirements change, provided firmware accommodates the different bit widths and associated full-scale ranges.
ADT7316ARQZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local/Remote
- Sensing Temperature - Local:
- -40°C ~ 120°C
- Sensing Temperature - Remote:
- -40°C ~ 120°C
- Output Type:
- I2C/SMBus, SPI
- Voltage - Supply:
- 2.7V ~ 5.25V
- Resolution:
- 12 b
- Features:
- Output Switch, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±3°C (±5°C)
- Test Condition:
- 0°C ~ 85°C (-40°C ~ 120°C)
- Operating Temperature:
- -40°C ~ 120°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-QSOP
ADT7316ARQZ-REEL FAQ
1.How can I place an order for ADT7316ARQZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADT7316ARQZ-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 ADT7316ARQZ-REEL reliable?
The price and inventory of ADT7316ARQZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADT7316ARQZ-REEL is usually 5 days.
3.What payment methods are accepted for ADT7316ARQZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADT7316ARQZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADT7316ARQZ-REEL?
ADT7316ARQZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADT7316ARQZ-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 ADT7316ARQZ-REEL?
For technical support, including ADT7316ARQZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADT7316ARQZ-REEL requirements.
6.How does Aetrix verify that ADT7316ARQZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADT7316ARQZ-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 ADT7316ARQZ-REEL meets industry standards.
7.What is the process for return or replacement of ADT7316ARQZ-REEL?
All ADT7316ARQZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADT7316ARQZ-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 ADT7316ARQZ-REEL part is unused and in its original packaging.
Return procedure for ADT7316ARQZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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