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Texas Instruments TLV1570IPW
- Part No.:
- TLV1570IPW
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLV1570IPW.pdf
- Description:
- IC ADC 10BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,745
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Product details
Overview
TLV1570IPW from Texas Instruments is a 10-bit, 8-channel serial analog-to-digital converter (ADC) with 1.25 MSPS throughput at 5 V and 625 KSPS at 3 V, operating from a single 2.7–5.5 V supply. It integrates an on-chip 8:1 analog multiplexer, internal reference (2.3 V or 3.8 V), SAR architecture, and SPI/QSPI-compatible 4-/5-wire serial interface - used in automotive sensor acquisition and digital servo feedback loops.
For engineers reviewing the TLV1570IPW datasheet, TLV1570IPW pinout, TLV1570IPW application, or TLV1570IPW equivalent, this page delivers verified electrical specs, validated pin functions, confirmed operating modes (DSP/µC), real-world power-down behavior (10 µA software, 300 µA auto), and precise channel auto-scan sequencing - all directly traceable to TI SLAS169B.
Technical Context
The TLV1570IPW implements a successive-approximation register (SAR) ADC with binary-weighted capacitor array and CMOS threshold detector; REF– is tied to AGND, REF+ connects to the REF pin or internal reference. Conversion requires exactly 16 SCLK cycles per sample, limiting maximum fs to fSCLK/16.
It supports two operational modes: DSP mode (FS-driven frame sync) and microcontroller mode (FS = high), with distinct power-down recovery timing - 1 SCLK for autopower-down, 16 SCLKs for software power-down. Channel selection is controlled via a 16-bit configuration register written to SDIN, with auto-scan enabled by DI10 and sequence defined by DI9–DI7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC - delivers 1024 discrete output codes with no missing codes (DNL < ±1 LSB). |
| Throughput Rate | 1.25 MSPS at 5 V / 625 KSPS at 3 V - requires 20 MHz SCLK (5 V) or 10 MHz SCLK (3 V) for full speed. |
| Analog Input Range | 0 V to AVDD - accepts rail-to-rail input without external level-shifting when AVDD = DVDD. |
| INL / DNL | < ±1 LSB (max) - ensures monotonicity and accurate transfer function across full temperature range (–40°C to 85°C). |
| Power Consumption | 8 mW at 2.7 V / 40 mW at 5.5 V active; 10 µA software power-down current - enables battery-sensitive industrial sensing. |
| Reference Options | Internal (2.3 V @ 3 V, 3.8 V @ 5 V) or external - internal mode disables REF pin output; external mode requires 0.1 µF decoupling to AGND. |
| Serial Interface | 4-wire (µC mode) or 5-wire (DSP mode) SPI/QSPI-compatible - no glue logic needed for TMS320 DSPs or SPI microcontrollers. |
Pinout & Package
TLV1570IPW is housed in a 20-pin TSSOP (PW) package rated for –40°C to +85°C operation. Pin functions are electrically validated per TI SLAS169B Rev. October 2000.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 1–5, 16–18) | Analog input channels | Independent 8-channel MUX inputs; each can be selected individually or scanned automatically via control register. |
| AIN (Pin 20) | ADC analog input | Final analog signal path into SAR core; accepts 0 V to AVDD; MUX output MO feeds AIN when external signal conditioning is used. |
| MO (Pin 19) | MUX analog output | Provides access to MUX output before ADC sampling - allows shared antialiasing filter/amplifier for all 8 channels. |
| REF (Pin 13) | Reference voltage input | Accepts external reference or floats in internal reference mode; decoupling capacitor required only in external mode. |
| CS (Pin 12) | Chip select | Active-low enable; high state places device in 3-state and power-down; falling edge latches FS to determine DSP/µC mode. |
| SDOUT (Pin 11) | Serial data output | Shifts out 10-bit conversion result MSB-first; valid on SCLK falling edge; tri-stated when CS is high. |
| SDIN (Pin 10) | Serial data input | Loads 16-bit configuration register (channel, ref, power mode); takes effect on next conversion cycle. |
| SCLK (Pin 9) | Serial clock input | Drives all serial transfers and internal conversion timing; 16 edges per conversion cycle. |
| FS (Pin 8) | Frame sync | Falling edge initiates data frame in DSP mode; pulled high in µC mode to disable frame sync detection. |
| AVDD / DVDD (Pins 15 / 6) | Analog/digital supplies | Single 2.7–5.5 V supply allowed; |AVDD – DVDD| < 0.5 V required for specified performance. |
| AGND / DGND (Pins 14 / 7) | Analog/digital grounds | Must be shorted externally near package; separate ground planes recommended with low-impedance connection at supply source. |
Key Features
| Feature | Design Value |
|---|---|
| Channel Auto-Scan | Configurable 4-sequence sweep (CH0–CH7, odd/even, reverse) with reset control - reduces host CPU overhead in multi-sensor systems. |
| Two Power-Down Modes | Autopower-down (300 µA, recovers in 1 SCLK) and software power-down (10 µA, recovers in 16 SCLKs) - optimizes energy use in burst-mode acquisition. |
| On-Chip Reference Selection | Programmable 2.3 V (3 V supply) or 3.8 V (5 V supply) internal reference - eliminates external reference IC and saves board space. |
| Glueless Serial Interface | Native compatibility with TMS320 DSP serial ports and SPI/QSPI microcontrollers - no level shifters, buffers, or timing logic required. |
| Independent MUX Access | MO pin exposes MUX output - enables single antialiasing filter or gain stage for all 8 channels, reducing component count and layout complexity. |
Applications
| Automotive Sensor Hub | Digital Servo Feedback |
|---|---|
|
Use Scenario: Acquisition of throttle position, coolant temperature, and brake pressure signals in engine control units under wide temperature variation. IC Role / Device Role / Timing Role: 8-channel simultaneous-sampling-capable ADC with internal reference and robust noise immunity for real-time closed-loop control. Use Value: Single-supply operation (2.7–5.5 V), –40°C to 85°C rating, and 10 µA software power-down enable reliable integration in harsh automotive environments. |
Use Scenario: High-speed sampling of motor current, rotor position, and winding voltage in brushless DC servo drives. IC Role / Device Role / Timing Role: 1.25 MSPS throughput ADC with programmable channel scan and low-latency serial interface to DSP-based motion controllers. Use Value: 16-SCLK deterministic conversion timing and frame-sync capability ensure precise synchronization with PWM generation and current loop updates. |
| Industrial Process Monitoring | Image Sensor Signal Chain |
|
Use Scenario: Multi-point temperature, pressure, and flow monitoring in PLC I/O modules with limited PCB area and thermal budget. IC Role / Device Role / Timing Role: Low-power, rail-to-rail-input ADC with integrated MUX and reference - minimizes external components and simplifies calibration. Use Value: 8 mW active power at 2.7 V and 10 µA software power-down allow continuous monitoring in energy-constrained edge nodes. |
Use Scenario: Digitizing analog outputs from CCD or CMOS image sensors in machine vision cameras requiring compact, low-noise front-end design. IC Role / Device Role / Timing Role: High-SNR (57 dB SINAD), low-DNL ADC with independent MUX output (MO) for shared correlated double sampling (CDS) circuitry. Use Value: MO pin enables one CDS amplifier/filter to serve all 8 channels - cuts analog BOM cost and improves channel-to-channel matching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, multi-channel serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-channel, 12-bit, 200 kSPS, SPI-only interface, no internal reference, higher resolution but lower speed. | Better precision for slow-varying industrial sensors; lacks auto-scan and frame-sync for real-time DSP systems. | Select when 12-bit accuracy outweighs 1.25 MSPS throughput and DSP integration needs. |
| TLV2548IPW | 8-channel, 12-bit, 200 kSPS, internal reference (2.5 V), SPI-compatible, no FS pin or DSP mode. | Lower power (1.5 mW) and simpler interface; missing autopower-down and flexible channel sequencing. | Prefer for low-power µC-based data loggers where DSP sync and aggressive power management are unnecessary. |
Compared with TLV1570IPW, ADS7822U offers higher resolution at lower speed and no DSP interface, while TLV2548IPW provides lower power and fixed 2.5-V reference but omits auto-scan and frame-sync - making TLV1570IPW uniquely suited for high-throughput, DSP-coupled, multi-sensor embedded control.
Availability
TLV1570IPW is available at Aetrix Electronics and suitable for automotive sensor acquisition, digital servo feedback, and industrial process monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV1570IPW 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade signal chain solutions.
The TLV1570IPW belongs to TI's legacy high-speed serial ADC product line, designed specifically for cost-sensitive, space-constrained embedded systems needing multi-channel acquisition, low-power operation, and seamless DSP/microcontroller interfacing.
FAQ
What is the maximum sampling frequency achievable with TLV1570IPW?
The TLV1570IPW achieves up to 1.25 MSPS at 5 V and 625 KSPS at 3 V. This is constrained by its fixed 16-SCLK-per-conversion timing: maximum fs = fSCLK/16. So at 20 MHz SCLK (5 V), fs = 1.25 MSPS; at 10 MHz SCLK (3 V), fs = 625 KSPS. Exceeding these SCLK rates violates timing specifications and degrades AC performance.
Does TLV1570IPW support true simultaneous sampling across all 8 channels?
No, the TLV1570IPW does not support simultaneous sampling. It uses a single SAR ADC core with an 8:1 analog multiplexer - channels are sampled sequentially. However, its fast 800 ns conversion time and configurable auto-scan enable rapid interleaved acquisition ideal for tightly coupled sensor sets where inter-channel skew is acceptable.
How does the internal reference work in TLV1570IPW, and what are its limitations?
In TLV1570IPW internal reference mode (DI6 = 1), the device generates either 2.3 V (at 3 V supply) or 3.8 V (at 5 V supply) - selected via DI5. The REF pin is inactive and must be left floating; no external decoupling capacitor is allowed. This mode demands ultra-low AGND noise, as REF– is tied to AGND and serves as the ADC's negative reference.
Can TLV1570IPW interface directly with an STM32 microcontroller's SPI peripheral?
Yes, TLV1570IPW operates in µC mode (FS = high) and is fully SPI-compatible: it uses CS, SCLK, SDIN (MOSI), and SDOUT (MISO) with standard CPOL = 0, CPHA = 0 timing. No level shifters or glue logic are needed. Ensure SCLK ≤ 10 MHz for 3 V operation or ≤ 20 MHz for 5 V operation per TI SLAS169B.
What is the purpose of the MO (MUX Output) pin on TLV1570IPW?
The MO pin exposes the analog output of the internal 8:1 multiplexer - placed between the CHx inputs and the ADC core. This allows insertion of a shared signal-conditioning circuit (e.g., antialiasing filter or programmable-gain amplifier) before digitization, reducing component count and improving channel-to-channel matching in multi-sensor systems using TLV1570IPW.
TLV1570IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 1.25M
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV1570IPW FAQ
1.How can I place an order for TLV1570IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1570IPW 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 TLV1570IPW reliable?
The price and inventory of TLV1570IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1570IPW is usually 5 days.
3.What payment methods are accepted for TLV1570IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1570IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1570IPW?
TLV1570IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1570IPW 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 TLV1570IPW?
For technical support, including TLV1570IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1570IPW requirements.
6.How does Aetrix verify that TLV1570IPW is sourced from the original manufacturer or authorized distributors?
All TLV1570IPW 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 TLV1570IPW meets industry standards.
7.What is the process for return or replacement of TLV1570IPW?
All TLV1570IPW units undergo pre-shipment inspection (PSI). If there is an issue with TLV1570IPW, 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 TLV1570IPW part is unused and in its original packaging.
Return procedure for TLV1570IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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