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Analog Devices Inc. LTC1402IGN#TRPBF
- Part No.:
- LTC1402IGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1402IGN#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,319
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Product details
Overview
LTC1402IGN#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 2.2 Msps serial sampling ADC with true differential inputs, internal 4.096 V reference, and dual ±5 V or single 5 V supply operation. It delivers 72 dB S/(N+D), –89 dB THD at Nyquist, 80 MHz full-power bandwidth, and supports unipolar (0 V to 4.096 V) or bipolar (±2.048 V) input ranges - used in high-speed data acquisition systems for spectrum analysis and digital radio receivers.
For engineers reviewing the LTC1402IGN#TRPBF datasheet, LTC1402IGN#TRPBF pinout, LTC1402IGN#TRPBF application, or LTC1402IGN#TRPBF equivalent, key selection criteria include its 2.2 Msps throughput with <455 ns minimum sampling period, Nap/Sleep power modes (15 mW / 10 µW), SPI/MICROWIRE-compatible 3-wire interface, and differential common-mode rejection up to –62 dB at 1 MHz.
Technical Context
The LTC1402IGN#TRPBF employs a successive approximation register (SAR) architecture with a high-bandwidth sample-and-hold front-end capable of 80 MHz full-power bandwidth and 57 ns acquisition time. Its differential input stage rejects common-mode noise across wide frequency ranges, enabling direct connection to high-performance op amps without level-shifting circuitry.
It integrates a curvature-corrected bandgap reference (4.096 V ±15 ppm/°C) with external overdrive capability and features three power states: active (90 mW), Nap (15 mW with instant wake-up), and Sleep (10 µW with REFREADY signaling). The 3-wire serial interface uses CONV and SCK to control conversion timing and outputs 12-bit data plus REFREADY bit on DOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in industrial environments. |
| Sampling Rate | 2.2 Msps maximum - supports real-time digitization of signals up to 1.1 MHz (Nyquist) without aliasing in baseband applications. |
| S/(N + D) | 72 dB at 1.1 MHz input - enables >11.6 ENOB for high-fidelity signal capture in communications and instrumentation. |
| THD | –89 dB at Nyquist (bipolar mode) - ensures low harmonic distortion for clean spectral analysis and RF receiver IF sampling. |
| Power Dissipation | 90 mW typical in active mode; 15 mW in Nap; 10 µW in Sleep - allows battery-powered portable instruments and low-thermal-load embedded systems. |
| Input Range | True differential: ±2.048 V (bipolar) or 0 V to 4.096 V (unipolar) - eliminates need for external level-shifting when interfacing with ±5 V or 5 V op amps. |
| Reference | Internal 4.096 V bandgap (±15 ppm/°C tempco); overdrivable externally - supports precision calibration and flexible system-level reference sourcing. |
Pinout & Package
Package: 16-lead narrow plastic SSOP (GN), 0.15 mm pitch, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVDD (1) | Analog positive supply | 5 V analog rail; requires 10 µF ceramic bypass to AGND1 for noise suppression in high-SNR applications. |
| AGND1 (2), AGND2 (6), OGND (9), DGND (13) | Analog/digital ground returns | AGND1/AGND2 serve analog reference and input stages; DGND/OGND isolate digital logic and output driver - must be tied to solid analog ground plane per layout guidelines. |
| AIN+ (3), AIN– (4) | Differential analog inputs | Sample simultaneously; support ±2.048 V or 0–4.096 V ranges; reject common-mode noise up to –62 dB at 1 MHz. |
| VREF (5) | Reference voltage output | 4.096 V internal reference; can be overdriven externally; requires 10 µF bypass capacitor for stability and settling. |
| GAIN (7), BIP/UNI (8) | Reference and input range configuration | GAIN selects 2.048 V or 4.096 V reference; BIP/UNI sets bipolar/unipolar mode - both are logic-level inputs tied to AGND2 or VREF. |
| DOUT (10), SCK (15), CONV (16) | Serial interface signals | 3-wire SPI/MICROWIRE-compatible interface; DOUT is 3-state with OVDD-selectable logic level (3 V or 5 V). |
| VSS (14) | Negative supply or ground | Accepts –5 V (bipolar) or 0 V (unipolar); must be more negative than AIN+/AIN–; bypassed to AGND. |
Key Features
| Feature | Design Value |
|---|---|
| True differential input architecture | Enables common-mode noise rejection without external instrumentation amplifiers - reduces PCB area and component count in noisy industrial environments. |
| Programmable power modes (Nap/Sleep) | Nap mode resumes conversion instantly (<100 ns wake-up); Sleep mode draws only 10 µW and asserts REFREADY after 10 ms - ideal for duty-cycled sensor nodes. |
| Internal 4.096 V reference with external overdrive | Eliminates need for external reference IC; overdrive capability allows system-level calibration using DACs or precision voltage sources. |
| 80 MHz full-power bandwidth | Supports accurate digitization of fast transients and wideband IF signals without external anti-alias filtering in many applications. |
| 3-wire serial interface with OVDD logic-level select | Direct interface to 3 V or 5 V microcontrollers/DSPs without level shifters - simplifies interconnect in mixed-voltage embedded systems. |
Applications
| Digital Radio Receiver IF Sampling | Spectrum Analyzer Front-End |
|---|---|
Use Scenario: Digitizing 1–10 MHz IF signals from mixer outputs in software-defined radios. IC Role / Device Role / Timing Role: High-speed SAR ADC capturing baseband-equivalent samples with minimal harmonic distortion and jitter. Use Value: 72 dB S/(N+D) and –89 dB THD preserve modulation fidelity; differential inputs suppress local oscillator leakage and power supply noise. |
Use Scenario: Real-time spectral analysis of RF signals up to 1.1 MHz using FFT-based processing. IC Role / Device Role / Timing Role: Precision sampling engine providing calibrated amplitude and phase data for post-processing. Use Value: No missing codes and ±0.35 LSB INL ensure accurate amplitude linearity across full dynamic range for dB-scale display accuracy. |
| Portable Data Acquisition System | Battery-Powered Handheld Instrument |
Use Scenario: Field-deployable oscilloscope or waveform recorder operating from Li-ion battery. IC Role / Device Role / Timing Role: Low-power ADC managing energy budget via Nap/Sleep cycling synchronized to trigger events. Use Value: 10 µW Sleep mode extends battery life; 15 mW Nap mode enables rapid response to transient signals without full re-initialization. |
Use Scenario: Handheld multimeter or signal analyzer requiring high DC accuracy and AC performance. IC Role / Device Role / Timing Role: Dual-role converter supporting both precision DC measurements (via unipolar mode) and AC signal analysis (via bipolar mode). Use Value: Single-supply 5 V operation and 0–4.096 V unipolar range simplify power design; ±2.048 V bipolar range matches standard op amp output swing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7865BSZ-1 | 14-bit, 100 kSPS, parallel interface, ±5 V supplies only - lower speed, higher resolution, no Nap/Sleep modes. | Best suited for static or slow-scan instrumentation where resolution > speed; lacks serial interface and low-power modes. | Select when 14-bit DC accuracy and parallel bus timing dominate over throughput and power efficiency. |
| ADS8326IDGSR | 16-bit, 500 kSPS, SPI interface, 2.7–5.5 V supply - higher resolution but half the sampling rate; no internal reference. | Preferred for precision data loggers needing >90 dB SNR; requires external reference and careful layout for 16-bit performance. | Choose when system SNR requirement exceeds 85 dB and sampling rate ≥500 kSPS suffices - not suitable for 2.2 Msps real-time capture. |
Compared with AD7865BSZ-1 and ADS8326IDGSR, the LTC1402IGN#TRPBF uniquely balances 2.2 Msps throughput, 12-bit linearity, integrated reference, and ultra-low-power Sleep mode - making it optimal for portable, battery-constrained, high-dynamic-range acquisition where neither pure precision nor ultra-low power alone dominates the design.
Availability
LTC1402IGN#TRPBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, digital radio receivers, and portable test equipment requiring stable component supply and long-term manufacturability.
Supply support for LTC1402IGN#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1402IGN#TRPBF belongs to Linear Technology's legacy high-speed precision ADC family, designed specifically for applications demanding wide bandwidth, low distortion, and flexible power management in compact form factors.
FAQ
What is the maximum sampling rate supported by the LTC1402IGN#TRPBF?
The LTC1402IGN#TRPBF supports a maximum sampling rate of 2.2 Msps, with a minimum sampling period (conversion + acquisition) of 455 ns. This rate is guaranteed across the full industrial temperature range (–40°C to +85°C) and enables accurate digitization of signals up to 1.1 MHz without aliasing in Nyquist-limited applications.
Does the LTC1402IGN#TRPBF require an external reference voltage?
No, the LTC1402IGN#TRPBF includes an internal 4.096 V temperature-compensated bandgap reference with ±15 ppm/°C drift. However, VREF can be overdriven externally for system-level calibration or improved accuracy - the internal reference remains functional unless actively overridden.
How does the Nap mode of the LTC1402IGN#TRPBF differ from Sleep mode?
Nap mode reduces power to 15 mW and allows immediate resumption of conversion upon CONV pulse - no latency or reference re-stabilization required. Sleep mode draws only 10 µW but requires 10 ms for VREF to settle and asserts the REFREADY bit before valid conversions resume - used for extended idle periods between acquisitions.
Can the LTC1402IGN#TRPBF operate from a single 5 V supply in bipolar mode?
Yes - the LTC1402IGN#TRPBF supports bipolar input ranges (±2.048 V) with a single 5 V supply, provided AIN+ and AIN– voltages remain within –2.5 V to +5 V absolute limits. This enables direct interfacing with rail-to-rail op amps without negative supply generation.
What logic levels are compatible with the SCK and CONV inputs of the LTC1402IGN#TRPBF?
The SCK and CONV inputs accept 3 V or 5 V CMOS and TTL logic levels. They are fully compatible with microcontrollers and DSPs operating at either voltage, eliminating the need for external level-shifting circuitry in mixed-voltage designs.
LTC1402IGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 2.2M
- 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, Internal
- Voltage - Supply, Analog:
- ±5V, 5V
- Voltage - Supply, Digital:
- ±5V, 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1402IGN#TRPBF FAQ
1.How can I place an order for LTC1402IGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1402IGN#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 LTC1402IGN#TRPBF reliable?
The price and inventory of LTC1402IGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1402IGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1402IGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1402IGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1402IGN#TRPBF?
LTC1402IGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1402IGN#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 LTC1402IGN#TRPBF?
For technical support, including LTC1402IGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1402IGN#TRPBF requirements.
6.How does Aetrix verify that LTC1402IGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1402IGN#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 LTC1402IGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1402IGN#TRPBF?
All LTC1402IGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1402IGN#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 LTC1402IGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC1402IGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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