My Inquiry
My Account
Analog Devices Inc. LTC1404CS8#TRPBF
- Part No.:
- LTC1404CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1404CS8#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,711
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1404CS8#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 600ksps successive-approximation ADC in SO-8 package, operating from single 5V or ±5V supplies. It integrates a 160ns sample-and-hold, precision 2.43V internal reference, and 3-wire SPI/MICROWIRE-compatible serial interface. Designed for high-speed data acquisition in portable instrumentation and telecom signal processing.
For engineers reviewing the LTC1404CS8#TRPBF datasheet, LTC1404CS8#TRPBF pinout, LTC1404CS8#TRPBF application, or LTC1404CS8#TRPBF equivalent, key selection criteria include unipolar/bipolar mode flexibility, 75mW typical power at full speed, Nap/Sleep low-power states, guaranteed no missing codes over temperature, and ±1LSB INL/DNL accuracy.
Technical Context
The LTC1404CS8#TRPBF uses a capacitive DAC-based successive approximation architecture with internal zeroing switch and comparator offset nulling during acquisition. Its 12-bit SAR register drives serial output via DOUT synchronized to CLK, with conversion initiated by rising edge on CONV.
It supports dual operation modes: unipolar (0V–4.096V input, 1mV/LSB) and automatic bipolar (±2.048V, two's complement) triggered by VSS < GND. Reference settling after Sleep mode is signaled by REFRDY bit in serial word, and VREF can be overdriven externally for span adjustment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes over temperature - ensures monotonicity in closed-loop control and precision measurement. |
| Sampling Rate | 600ksps maximum - supports Nyquist-limited signal capture up to 300kHz with 72dB S/(N+D) performance. |
| Power Dissipation | 75mW typical at 600ksps; 7.5mW in Nap mode; 60µW in Sleep mode - enables battery-powered handheld instruments. |
| Analog Input Range | 0V to 4.096V (unipolar) or ±2.048V (bipolar) - matches standard sensor outputs and differential signal chains. |
| DC Accuracy | ±1LSB integral and differential nonlinearity - meets requirements for 12-bit system calibration without software correction. |
| Reference Output | 2.43V ±10ppm/°C tempco, 1mA drive capability - provides stable scaling for external circuitry without additional voltage references. |
| Serial Interface | 3-wire SPI/MICROWIRE-compatible (CONV, CLK, DOUT) - simplifies connection to microcontrollers and DSPs with minimal GPIO usage. |
Pinout & Package
Package: 8-lead plastic SOIC (SO-8), 150 mil width, JEDEC MS-012AC, θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply rail | 4.75V–5.25V for unipolar; 4.75V–5.25V per rail in bipolar - requires 10µF + 0.1µF bypass to GND for noise-sensitive analog operation. |
| AIN (Pin 2) | Analog input node | High-impedance input (5pF hold capacitance) accepting 0–4.096V or ±2.048V - driven by op amps settling within 160ns (e.g., LT1363). |
| VREF (Pin 3) | Internal reference output | 2.43V bandgap reference with 1mA sink/source capability - decoupling mandatory; can be overdriven ≥2.46V for bipolar span adjustment. |
| GND (Pin 4) | Analog ground reference | Must connect directly to low-impedance analog ground plane - separates digital return paths to minimize sampling noise coupling. |
| DOUT (Pin 5) | Serial data output | 3-state CMOS output delivering 12-bit result LSB-first - Hi-Z when not active; timing referenced to CLK edge (t8 = 40–70ns valid delay). |
| VSS (Pin 8) | Negative supply rail | –5.25V to –2.45V for bipolar operation; tied to GND for unipolar - enables automatic mode detection and dual-rail dynamic range. |
| CONV (Pin 7) | Conversion start/control | Rising-edge-triggered; double pulse enters Nap mode, quadruple pulse enters Sleep mode - controls power state transitions without external logic. |
| CLK (Pin 6) | Serial clock input | 0.1–9.6MHz CMOS-compatible clock - minimum 40ns pulse width required to wake from Nap/Sleep and synchronize DOUT bit shifts. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated sample-and-hold | 160ns acquisition time in bipolar mode - eliminates need for external SHAs in high-speed data loggers. |
| Auto-detect bipolar/unipolar mode | VSS voltage level triggers internal configuration - reduces BOM count and PCB layout complexity for multi-range systems. |
| REFRDY status bit | Embedded in serial data word after Sleep wake-up - enables deterministic timing for first valid conversion without polling or fixed delays. |
| Low-leakage analog input | ±1µA max leakage during conversion - preserves accuracy when interfacing high-output-impedance sensors or passive filters. |
| Overvoltage-tolerant digital I/O | Inputs withstand –0.3V to 12V; outputs drive ±10mA - simplifies level-shifting in mixed-voltage microcontroller interfaces. |
Applications
| Portable Data Acquisition | Telecom Signal Processing |
|---|---|
Use Scenario: Battery-powered handheld oscilloscope capturing transient waveforms up to 300kHz. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog front-end signals with 600ksps throughput and low-latency Nap-mode wake-up. Use Value: 75mW active power and 60µW Sleep mode extend runtime; ±1LSB linearity ensures calibrated amplitude fidelity across temperature. | Use Scenario: Baseband receiver in digital radio implementing real-time spectrum analysis of IF signals. IC Role / Device Role / Timing Role: High-SNR digitizer feeding FFT engine with 72dB S/(N+D) at Nyquist, supporting wide dynamic range demodulation. Use Value: 3-wire serial interface minimizes MCU pin count; full linear bandwidth >1MHz enables undersampling of higher-frequency IF bands. |
| Industrial Sensor Monitoring | Audio Test Equipment |
Use Scenario: Multi-channel vibration analyzer measuring accelerometer outputs in rotating machinery. IC Role / Device Role / Timing Role: Precision ADC converting ±2.048V differential sensor outputs with auto-bipolar detection and internal reference stability. Use Value: ±45ppm/°C full-scale drift and 2.43V reference enable direct sensor-to-digital scaling without external trimming components. | Use Scenario: Audio analyzer generating THD+N measurements using dual-tone intermodulation test signals. IC Role / Device Role / Timing Role: Low-distortion ADC capturing 100kHz–300kHz tones with –76dB THD and –82dB IMD for compliance testing. Use Value: Guaranteed –82dB third-order IMD at 300kHz and peak spurious < –90dBc support accurate audio quality validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, medium-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 12-bit, 200ksps, single-supply only, no internal reference, SPI-only interface | Lacks bipolar mode, lower speed, requires external reference - suitable for cost-sensitive unipolar-only systems | Choose for simpler supply architecture where 200ksps suffices and external reference is acceptable. |
| MAX11131ETE+ | 12-bit, 500ksps, internal reference, pseudo-differential input, 10-pin µMAX | Smaller package, lower power (35mW), but no true bipolar mode or Nap/Sleep states | Prefer for space-constrained designs needing moderate speed and lowest active power, but not requiring dual-rail operation. |
Compared with ADS7822U and MAX11131ETE+, the LTC1404CS8#TRPBF uniquely combines 600ksps speed, integrated bipolar/unipolar detection, ultra-low Sleep-mode power (60µW), and factory-trimmed 2.43V reference - making it optimal for portable, multi-range, battery-critical instrumentation.
Availability
LTC1404CS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, telecom baseband receivers, industrial sensor monitoring, and audio test equipment requiring stable component supply and long-term production continuity.
Supply support for LTC1404CS8#TRPBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC1404CS8#TRPBF belongs to ADI's legacy Linear Technology precision data converter family, engineered for high-speed, low-power, and high-accuracy applications in portable and embedded systems where DC precision and AC performance must coexist.
FAQ
What is the operating temperature range for the LTC1404CS8#TRPBF?
The LTC1404CS8#TRPBF is specified for commercial temperature range: 0°C to 70°C. This is indicated by the "C" suffix in the part number. For extended industrial operation (–40°C to 85°C), the LTC1404IS8 variant is available. All DC and AC specifications-including ±1LSB INL/DNL, 69dB S/(N+D), and 600ksps sampling-are guaranteed across this full range.
How does the LTC1404CS8#TRPBF enter and exit Nap and Sleep modes?
The LTC1404CS8#TRPBF enters Nap mode with two consecutive pulses on the CONV pin, and Sleep mode with four pulses. Wake-up is triggered by any CLK pulse: Nap mode resumes conversion immediately (<350ns wake time), while Sleep mode requires reference stabilization-indicated by the REFRDY bit in the first serial data word. No external control logic is needed.
Can the internal reference of the LTC1404CS8#TRPBF be disabled or replaced?
The internal 2.43V reference of the LTC1404CS8#TRPBF cannot be disabled, but it can be overdriven externally via the VREF pin. To use an external reference, drive VREF to ≥2.46V (e.g., LT1019A-5) - this disables the internal reference and sets full-scale span accordingly. Driving below 2.43V forces REFRDY low and invalidates conversions.
What is the minimum acquisition time for the LTC1404CS8#TRPBF in unipolar mode?
The minimum acquisition time for the LTC1404CS8#TRPBF in unipolar mode is 200ns, measured from CLK edge to valid sample mode. This timing allows use with fast-settling op amps like the LT1363 (60ns to 0.5LSB). In bipolar mode (VSS = –5V), acquisition time reduces to 160ns due to optimized internal charge redistribution.
Does the LTC1404CS8#TRPBF support daisy-chained serial communication?
No, the LTC1404CS8#TRPBF does not support daisy-chaining. Its 3-wire interface (CONV, CLK, DOUT) is point-to-point only. DOUT is a single-ended, CMOS-compatible output that goes Hi-Z when inactive. Multiple LTC1404CS8#TRPBF devices require individual DOUT lines or external multiplexing - no native serial chaining or CS/SS pin is provided.
LTC1404CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 600k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±5V, 5V
- Voltage - Supply, Digital:
- ±5V, 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1404CS8#TRPBF FAQ
1.How can I place an order for LTC1404CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1404CS8#TRPBF 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 LTC1404CS8#TRPBF reliable?
The price and inventory of LTC1404CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1404CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1404CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1404CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1404CS8#TRPBF?
LTC1404CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1404CS8#TRPBF 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 LTC1404CS8#TRPBF?
For technical support, including LTC1404CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1404CS8#TRPBF requirements.
6.How does Aetrix verify that LTC1404CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1404CS8#TRPBF 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 LTC1404CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1404CS8#TRPBF?
All LTC1404CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1404CS8#TRPBF, 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 LTC1404CS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1404CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1404CS8#TRPBF 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…
