My Inquiry
My Account
Analog Devices Inc. LTC1409CG#PBF
- Part No.:
- LTC1409CG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1409CG#PBF.pdf
- Description:
- IC ADC 12BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,486
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1409CG#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, 800ksps successive-approximation ADC with differential sampling, ±2.5V bipolar input range, internal 2.5V reference, and dual shutdown modes (Nap: 4mW, Sleep: 10µW). It delivers 72.5dB S/(N+D) at 400kHz Nyquist frequency and operates from ±5V supplies. Used in high-speed data acquisition systems requiring precision timing and low power.
For engineers reviewing the LTC1409CG#PBF datasheet, LTC1409CG#PBF pinout, LTC1409CG#PBF application, or LTC1409CG#PBF equivalent, key selection criteria include its 20MHz full-power bandwidth, no-pipeline-delay parallel output, ±1LSB INL/DNL over temperature, true differential input architecture with 60dB CMRR, and support for 3V/5V logic via separate OVDD pin.
Technical Context
The LTC1409CG#PBF implements a capacitor-based successive approximation register (SAR) architecture with integrated differential sample-and-hold, enabling simultaneous acquisition on +AIN and –AIN inputs. Its internal clock eliminates external timing dependencies, and conversion is initiated by a falling edge on CONVST while BUSY signals completion.
It features a buffered 2.5V bandgap reference (±15ppm/°C tempco) accessible at VREF, with REFCOMP requiring 10µF bypassing. The analog front-end supports both single-ended (–AIN grounded) and fully differential configurations, rejecting common-mode noise up to 20MHz bandwidth without performance degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function for accurate signal reconstruction. |
| Sampling Rate | 800ksps maximum - enables real-time capture of signals up to 400kHz Nyquist frequency. |
| S/(N + D) | 72.5dB at 400kHz - ensures >11.7 effective bits for high-fidelity spectral analysis. |
| INL / DNL | ±1LSB over temperature - maintains linearity across 0°C to 70°C industrial range without calibration. |
| Input Range | ±2.5V differential - matches standard op-amp output ranges and simplifies anti-alias filter design. |
| Power Dissipation | 80mW typical at full rate; 4mW in Nap mode - balances throughput and battery life in portable instrumentation. |
| Common-Mode Rejection | 60dB - suppresses ground-loop noise and allows direct measurement from noisy sensor sources. |
| Acquisition Time | 150ns - permits use with moderate-source-impedance drivers without external buffering. |
Pinout & Package
Package: 28-pin plastic SO (Small Outline) wide-body, RoHS-compliant, JEDEC MS-013AC, θJA = 95°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +AIN (1) | Differential analog input positive | Accepts signal up to ±2.5V relative to –AIN; sampled simultaneously with –AIN for true differential acquisition. |
| –AIN (2) | Differential analog input negative | Reference point for +AIN; common-mode voltage may range from –2.5V to +2.5V without affecting linearity. |
| VREF (3) | 2.5V reference output | Buffered internal bandgap reference; can be overdriven by external source for adjustable full-scale span. |
| REFCOMP (4) | Reference amplifier compensation | Must be bypassed to AGND with ≥10µF capacitor to stabilize internal reference amplifier. |
| AGND (5) | Analog ground return | Primary ground for analog circuitry; must be tied to DGND and OGND at single point to minimize noise coupling. |
| D11–D4 (6–13) | MSB-to-bit-4 parallel data outputs | Three-state outputs active when CS low and RD low; compatible with 3V or 5V logic via OVDD pin. |
| DGND (14) | Digital logic ground | Ground for internal digital control logic; electrically isolated from AGND but tied externally. |
| OVDD (27) | Output driver supply | Separate supply for digital outputs - set to 3V or 5V to interface directly with corresponding logic families. |
| CONVST (23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle and resets successive approximation register. |
| BUSY (25) | Conversion status indicator | Active-low open-drain output; data valid on rising edge - enables synchronous latch timing with microprocessors. |
| SHDN / NAP/SLP (21/20) | Power management control | NAP/SLP selects shutdown mode; SHDN activates selected mode - enables rapid wake-up (200ns) from Nap or ultra-low leakage Sleep. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate availability of conversion result after BUSY rises - eliminates latency uncertainty in closed-loop control systems. |
| Dual shutdown modes | Nap mode (4mW) enables fast wake-up; Sleep mode (10µW) maximizes battery life in intermittent-sampling applications. |
| True differential input architecture | 60dB CMRR up to 20MHz - rejects noise from long cables, motor drives, or switching power supplies without external instrumentation amps. |
| Internal 2.5V reference with tempco | ±15ppm/°C drift - eliminates need for external precision reference in cost-sensitive designs while maintaining DC accuracy. |
| Separate OVDD supply | Direct interface to 3V or 5V logic families - avoids level-shifting components and reduces BOM count in mixed-voltage systems. |
| 20MHz full-power bandwidth | Supports undersampling of RF or IF signals above Nyquist - enables software-defined radio and spectrum monitoring applications. |
Applications
| Telecommunications Baseband Processing | Digital Signal Processing Front-End |
|---|---|
Use Scenario: Digitizing I/Q baseband signals from RF mixers in cellular infrastructure equipment. IC Role / Device Role / Timing Role: High-speed, low-distortion ADC capturing complex waveforms at 800ksps with precise amplitude and phase fidelity. Use Value: 72.5dB S/(N+D) and 86dB THD preserve EVM and ACLR performance required for LTE/5G modulation schemes. | Use Scenario: Real-time acquisition of sensor data for FFT-based vibration analysis in predictive maintenance systems. IC Role / Device Role / Timing Role: Precision sampling engine feeding DSP algorithms with minimal quantization error and timing jitter. Use Value: ±1LSB INL/DNL and 5ps RMS aperture jitter ensure accurate spectral bin resolution and harmonic detection. |
| Multiplexed Data Acquisition Systems | Imaging System Digitization |
Use Scenario: Channel-scanned analog inputs from multi-sensor arrays in industrial PLC modules. IC Role / Device Role / Timing Role: Centralized ADC with fast acquisition time (150ns) and flexible power management for per-channel sampling control. Use Value: Nap/Sleep modes reduce average power consumption during idle channel intervals without sacrificing conversion readiness. | Use Scenario: Converting analog video output from CCD/CMOS sensors in medical endoscopes or machine vision cameras. IC Role / Device Role / Timing Role: Low-noise, high-linearity digitizer preserving dynamic range and contrast in grayscale imaging pipelines. Use Value: ±2.5V input range matches sensor output swing; 20MHz bandwidth supports pixel clock rates up to 16MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BRZ-1 | 12-bit, 600ksps, ±5V input range, no internal reference, requires external REF. | Higher input voltage tolerance but lacks integrated reference and differential input rejection. | Select when system already provides precision ±5V reference and common-mode noise is negligible. |
| MAX1167BCAP+ | 12-bit, 250ksps, internal reference, SPI interface, no parallel bus or BUSY signal. | Lower speed and serial interface limit real-time processing; better suited for space-constrained embedded controllers. | Select when board area is critical and microcontroller has SPI but lacks parallel port or timing-critical BUSY handshake. |
Compared with AD7892BRZ-1 and MAX1167BCAP+, the LTC1409CG#PBF uniquely combines 800ksps parallel-output throughput, integrated 2.5V reference, true differential sampling, and dual low-power modes - making it optimal for high-fidelity, low-latency, mixed-signal systems where timing determinism and noise immunity are essential.
Availability
LTC1409CG#PBF is available at Aetrix Electronics and suitable for telecommunications baseband processing, digital signal processing front-ends, and multiplexed data acquisition systems requiring stable component supply and long-term industrial lifecycle support.
Supply support for LTC1409CG#PBF 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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1409CG#PBF belongs to ADI's legacy Linear Technology precision data converter product line, engineered for high-speed, low-power, high-dynamic-range applications in test equipment, instrumentation, and real-time signal analysis systems.
FAQ
What is the operating temperature range for the LTC1409CG#PBF?
The LTC1409CG#PBF is specified for operation from 0°C to 70°C (Commercial grade). Its DC specifications-including ±1LSB INL and ±1LSB DNL-are guaranteed across this full range. The "G" suffix denotes the commercial temperature grade, distinct from the "I" grade (–40°C to +85°C) offered in other variants like LTC1409IG.
Does the LTC1409CG#PBF require an external reference, or does it have an internal one?
The LTC1409CG#PBF includes a factory-trimmed, temperature-compensated 2.5V internal reference accessible at the VREF pin (Pin 3), eliminating the need for an external reference in most applications. It also supports external reference override via the VREF pin, enabling adjustable full-scale span for dynamic signal conditioning.
How does the LTC1409CG#PBF handle differential versus single-ended input configurations?
The LTC1409CG#PBF natively supports both configurations: differential mode uses +AIN and –AIN simultaneously for common-mode noise rejection, while single-ended mode grounds –AIN and applies signal to +AIN. Linearity specs (INL/DNL) hold in both modes, though dynamic performance (e.g., THD) degrades slightly at rail-aligned common-mode voltages.
What are the power consumption values for the LTC1409CG#PBF in Nap and Sleep modes?
In Nap mode (NAP/SLP = HIGH, SHDN = LOW), the LTC1409CG#PBF draws 0.8–1.2mA from ±5V supplies, equating to ~4mW total dissipation. In Sleep mode (NAP/SLP = LOW, SHDN = LOW), it consumes just 1µA from each supply, resulting in ~0.01mW total power - ideal for battery-powered wake-on-event systems.
Can the LTC1409CG#PBF interface directly with 3V logic systems?
Yes - the LTC1409CG#PBF features a dedicated OVDD pin (Pin 27) that powers its digital output drivers. By connecting OVDD to a 3V supply (instead of AVDD), the D11–D0 outputs become fully compatible with 3V logic families without level shifters, while AVDD and VSS remain at ±5V for analog performance.
LTC1409CG#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 800k
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- 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
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1409CG#PBF FAQ
1.How can I place an order for LTC1409CG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1409CG#PBF 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 LTC1409CG#PBF reliable?
The price and inventory of LTC1409CG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1409CG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1409CG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1409CG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1409CG#PBF?
LTC1409CG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1409CG#PBF 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 LTC1409CG#PBF?
For technical support, including LTC1409CG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1409CG#PBF requirements.
6.How does Aetrix verify that LTC1409CG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1409CG#PBF 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 LTC1409CG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1409CG#PBF?
All LTC1409CG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1409CG#PBF, 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 LTC1409CG#PBF part is unused and in its original packaging.
Return procedure for LTC1409CG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1409CG#PBF 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…
