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ADS7805U/1K
ADS7805U/1K
| Part Number | ADS7805U/1K |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC) |
| Description | 16‑Bit 100kSPS SAR Analog‑to‑Digital Converter, On‑chip Reference & Parallel Interface, SOIC‑28 Tape & Reel Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The ADS7805U/1K is a 16‑bit SAR analog‑to‑digital converter from Texas Instruments for precision data‑acquisition systems. It delivers 100 kSPS throughput, integrates track‑hold amplifier, internal 2.5V reference and parallel host interface on single CMOS die. Powered by single 5V supply, it supports true bipolar ±10V analog input. Device is supplied in SOIC‑28 /1K tape‑and‑reel format, widely used for industrial measurement, instrumentation and ATE equipment.
Core Advantages
16‑Bit Resolution with 100 kSPS Sampling Rate
Guaranteed no‑missing‑codes 16‑bit performance, 100 kSPS conversion rate for accurate dynamic signal measurement.
High‑Integration Monolithic ADC
Embedded track‑hold, clock and 2.5V internal reference, reduces external BOM count and PCB layout complexity.
Direct ±10V Bipolar Input Support
Accept standard industrial ±10V signal input under single 5V power supply, no extra level‑shift circuit required.
Dual‑Mode Parallel Digital Interface
16‑bit parallel output, supports byte‑swap for 8‑bit bus connection, compatible with MCU, DSP and FPGA controllers.
Key Specifications
| Brand | Texas Instruments (TI) |
|---|---|
| RoHS Status | RoHS Compliant / Lead‑Free |
| EDA / CAD | PCB Footprint & 3D Model Available upon Request |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | 28‑SOIC (0.295″, 7.50mm Width) |
| Packaging Type | Tape & Reel (TR) ‑ 1,000 units (/1K suffix) |
| Mounting Type | Surface Mount (SMD / SMT) |
| Surface Marking / Silkscreen | ADS7805U / BB Logo |
| Architecture | SAR (Successive Approximation Register) |
| Resolution | 16 Bits |
| Sampling Rate | 100 kSPS |
| Analog Input Channel | 1‑Channel Single‑Ended |
| Analog Input Voltage Range | ±10 V (Bipolar) |
| Analog / Digital Supply Voltage | 4.75V ~ 5.25V (Single 5V Nominal Supply) |
| Power Consumption | Typical 81.5 mW, Max 100 mW |
| Data Interface | Parallel (16‑bit / 8‑bit Byte Format) |
| Internal Reference | 2.5V Precision On‑chip Reference, External Reference Supported |
| Operating Temperature | -25°C ~ +85°C (Full Spec Range; limited‑spec operation down to ‑40°C) |
Typical Applications
- Industrial Process Control and PLC systems
- Single‑channel high‑precision Data Acquisition (DAQ)
- Laboratory & Industrial Instrumentation
- Automated Test Equipment (ATE)
- Motor control and DSP measurement loop
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1‑2 business days |
| Delivery Time | 3‑7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What does “/1K” suffix mean for ADS7805U/1K?
A: “/1K” stands for tape‑and‑reel packaging, 1000 pieces per reel. Versions without /1K suffix are supplied in tube packaging.
Q2: Can ADS7805U/1K work with an 8‑bit microcontroller?
A: Yes. The parallel interface supports byte‑swap mode. 16‑bit conversion results can be read via two 8‑bit read cycles.
Q3: Is an external reference voltage required?
A: No. A 2.5V on‑chip reference is integrated. An external reference pin is available for higher‑precision designs.
Q4: What is the lifecycle status of ADS7805U/1K?
A: This device is TI EOL obsolete (EOL notice 2024). TI no longer mass‑produces this part; only stock inventory is available.
Q5: What are recommended replacement or compatible models?
A: Preferred replacement: ADS8505IDWR (16‑bit, 250kSPS, same SOIC‑28 package & parallel interface). ADS7804U is pin‑compatible but only supports 50kSPS, cannot be direct drop‑in for 100kSPS requirements.
Q6: Why full‑spec temperature is ‑25°C instead of ‑40°C?
A: TI datasheet guaranteed performance range: ‑25°C ~ +85°C. Some samples can run down to ‑40°C, but parameters are not guaranteed below ‑25°C.
Q7: Where can I get datasheet and CAD files?
A: Submit product inquiry to obtain original datasheet, pinout and CAD footprint resources.
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