My Inquiry
My Account
Texas Instruments ADS7816UC
- Part No.:
- ADS7816UC
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADS7816UC.pdf
- Description:
- IC ADC 12BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:368
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS7816UC from Burr-Brown (now Texas Instruments) is a 12-bit, 200kHz SAR analog-to-digital converter with differential input, synchronous serial interface, and programmable reference range (100mV–5V). It delivers 1.9mW power at full rate, 3µA shutdown current, and ±1 LSB integral linearity - ideal for low-power remote data acquisition systems requiring high resolution in compact SOIC-8 packaging.
For engineers reviewing the ADS7816UC datasheet, ADS7816UC pinout, ADS7816UC application, or ADS7816UC equivalent, this page provides verified technical context, real-world design meaning of key specs, validated SOIC-8 pin functions, confirmed alternative options, and supply support for battery-powered, isolated, or multi-channel sensor systems.
Technical Context
The ADS7816UC implements a capacitive redistribution successive approximation register (SAR) architecture on 0.6µm CMOS, integrating sample-and-hold functionality without external components. It operates with an external clock (10kHz–3.2MHz), single +5V supply, and externally adjustable reference voltage.
Its differential analog input (+In/–In) captures voltage difference during hold mode, with –In limited to ±200mV for remote ground sensing; conversion result is output serially MSB-first on DOUT synchronized to DCLOCK falling edge, with null-bit preamble and no pipeline delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes across full-scale range. |
| Sampling Rate | 200kHz - supports up to 200k conversions/sec with 12-clock-cycle conversion time. |
| Reference Range | 100mV to 5V - sets LSB size from 24µV to 1.22mV; enables flexible input scaling. |
| Power Consumption | 1.9mW at 200kHz - enables operation in energy-constrained embedded systems. |
| Shutdown Current | 3µA max - achieved by pulling CS/SHDN high; critical for battery longevity. |
| Integral Linearity | ±1 LSB - ensures monotonicity and <1 LSB code-width deviation over full temperature range. |
| Differential Linearity | ±0.75 LSB - guarantees no missing codes and stable transition behavior. |
| Supply Voltage | +4.5V to +5.25V - compatible with standard 5V logic rails and regulated supplies. |
Pinout & Package
ADS7816UC is housed in an 8-lead SOIC package (drawing number 182), measuring 4.9mm × 3.9mm × 1.75mm, with gull-wing leads and 1.27mm pitch - suitable for automated assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VREF | Reference voltage input | Defines full-scale analog input span; accepts 100mV–5V; draws 2.4–100µA depending on sample rate and code. |
| 2 +In | Non-inverting analog input | Differential input node; must stay within GND–0.2V to VCC+0.2V for linearity compliance. |
| 3 –In | Inverting analog input | Remote ground sense point; limited to ±200mV swing; not resampled mid-conversion. |
| 4 GND | Analog ground reference | Low-impedance return path for analog circuitry; requires dedicated analog ground plane connection. |
| 5 CS/SHDN | Chip select / shutdown control | Active-low conversion trigger; HIGH forces full power-down (3µA) and tri-states DOUT. |
| 6 DOUT | Serial data output | MSB-first 12-bit straight binary; valid on falling DCLOCK edge after null bit; tri-states when CS goes HIGH. |
| 7 DCLOCK | Data clock input | Synchronizes serial output and controls conversion speed; min pulse width 150ns; duty cycle flexible. |
| 8 +VCC | Positive supply | +4.5V to +5.25V; powers internal analog/digital blocks; requires local 0.1µF ceramic bypass. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 1.9mW at 200kHz sampling - reduces thermal load and extends battery life in portable DAQ. |
| Differential input architecture | True differential sampling with hold-mode capture - rejects common-mode noise from remote sensors. |
| Programmable reference range | 100mV–5V adjustment - enables direct interfacing with low-output sensors (e.g., thermocouples) without gain stages. |
| Synchronous serial interface | 3-wire (CS/SHDN, DCLOCK, DOUT), MSB-first - simplifies microcontroller integration with minimal GPIO usage. |
| Auto power-down recovery | Resumes conversion immediately after CS low assertion - eliminates startup delay in burst-mode acquisition. |
| SOIC-8 footprint compatibility | Pinout identical to ADS7816U/UB/UC variants - allows drop-in replacement across performance grades. |
Applications
| Thermocouple Monitoring | Isolated Sensor Interface |
|---|---|
Use Scenario: Measuring temperature from K-type thermocouples in industrial enclosures with high EMI. IC Role / Device Role / Timing Role: ADC front-end converting µV-level differential thermocouple output with programmable 100mV reference. Use Value: Eliminates external instrumentation amplifier; ±1 LSB INL ensures sub-0.5°C accuracy over –40°C to +85°C. |
Use Scenario: Acquiring analog signals across galvanically isolated barriers using optocouplers or digital isolators. IC Role / Device Role / Timing Role: Low-power, isolated-side ADC providing serial data to microcontroller via isolated SPI-like interface. Use Value: 3µA shutdown current minimizes isolated supply loading; SOIC-8 fits tight isolation creepage/clearance layouts. |
| Battery-Powered Data Logger | Multi-Channel Remote DAQ |
Use Scenario: Field-deployed environmental logger running on AA batteries for months between charges. IC Role / Device Role / Timing Role: Primary ADC managing wake-on-event sampling, then returning to 3µA shutdown state. Use Value: 150µW at 12.5kHz sampling enables >1-year battery life; differential input rejects supply ripple-induced errors. |
Use Scenario: Simultaneous acquisition from 8+ sensors in distributed building automation nodes. IC Role / Device Role / Timing Role: One of multiple ADS7816UCs sharing DCLOCK and DOUT bus under microcontroller arbitration. Use Value: Small SOIC-8 footprint and 1.9mW dissipation allow dense channel packing without thermal derating. |
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 |
|---|---|---|---|
| ADS7816UB | Same SOIC-8 package; ±2 LSB integral linearity (vs ±1 for UC); higher INL tolerance. | Acceptable where <0.5°C thermocouple accuracy is not required; lower cost grade. | Select ADS7816UB if system-level calibration compensates for ±2 LSB INL and BOM cost is prioritized. |
| ADS7822U | 12-bit, 200kHz SAR ADC in SOIC-8; includes internal reference (2.5V); no external VREF needed. | Reduces external component count but fixes full-scale to 2.5V; less flexible for low-voltage sensor scaling. | Choose ADS7822U when reference stability outweighs programmability; avoid when <100mV input ranges are needed. |
Compared with ADS7816UB and ADS7822U, the ADS7816UC uniquely balances ±1 LSB precision, 100mV–5V reference flexibility, and SOIC-8 compatibility - making it optimal for calibrated, low-noise, multi-range sensor systems where external reference control is essential.
Availability
ADS7816UC is available at Aetrix Electronics and suitable for battery-powered data loggers, isolated sensor interfaces, and multi-channel remote data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS7816UC 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
Burr-Brown Corporation, acquired by Texas Instruments in 2000, specialized in precision analog ICs including data converters, amplifiers, and references.
The ADS7816UC belongs to Burr-Brown's micropower SAR ADC product line, designed specifically for high-resolution, low-power data acquisition in portable, remote, and isolated measurement systems.
FAQ
What is the maximum sampling rate of the ADS7816UC?
The ADS7816UC achieves a maximum sampling rate of 200kHz, corresponding to a 12-clock-cycle conversion time with a 3.2MHz DCLOCK signal. At this rate, the device consumes 1.9mW and maintains ±1 LSB integral linearity across –40°C to +85°C. Lower rates (e.g., 12.5kHz) reduce power to 150µW while preserving specification compliance.
Does the ADS7816UC require an external reference voltage?
Yes, the ADS7816UC requires an external reference voltage applied to the VREF pin. It supports a programmable range from 100mV to 5V, directly setting the full-scale input span and LSB size (e.g., 24µV at 100mV, 1.22mV at 5V). No internal reference is provided - reference stability and noise performance directly impact ADC accuracy.
What package type is used for the ADS7816UC?
The ADS7816UC is supplied in an 8-lead SOIC package (drawing number 182), with 1.27mm lead pitch and 4.9mm × 3.9mm body dimensions. This package is pin-compatible with other ADS7816 variants (e.g., ADS7816U, ADS7816UB) and supports standard surface-mount assembly processes.
How does the differential input of the ADS7816UC function in practice?
The ADS7816UC's differential input uses +In and –In pins to capture voltage difference during hold mode, with –In restricted to ±200mV. This configuration enables remote ground sensing - e.g., connecting –In to the sensor's local ground - rejecting small common-mode shifts without requiring resampling. It is not intended for large common-mode rejection like instrumentation amplifiers.
Can the ADS7816UC be powered down to save energy?
Yes, the ADS7816UC enters ultra-low-power shutdown mode (≤3µA) when the CS/SHDN pin is driven HIGH. This fully disables analog and digital sections and tri-states DOUT. Power resumes automatically on next CS LOW assertion, with no initialization delay - enabling efficient burst-mode acquisition in battery-powered systems.
ADS7816UC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7816UC FAQ
1.How can I place an order for ADS7816UC through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7816UC 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 ADS7816UC reliable?
The price and inventory of ADS7816UC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7816UC is usually 5 days.
3.What payment methods are accepted for ADS7816UC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7816UC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7816UC?
ADS7816UC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7816UC 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 ADS7816UC?
For technical support, including ADS7816UC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7816UC requirements.
6.How does Aetrix verify that ADS7816UC is sourced from the original manufacturer or authorized distributors?
All ADS7816UC 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 ADS7816UC meets industry standards.
7.What is the process for return or replacement of ADS7816UC?
All ADS7816UC units undergo pre-shipment inspection (PSI). If there is an issue with ADS7816UC, 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 ADS7816UC part is unused and in its original packaging.
Return procedure for ADS7816UC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS7816UC 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…
