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Analog Devices Inc. LTC2296CUP#PBF
- Part No.:
- LTC2296CUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2296CUP#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:185
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Product details
Overview
LTC2296CUP#PBF from Analog Devices (formerly Linear Technology) is a dual 14-bit, 25Msps low-power analog-to-digital converter operating from a single 3V supply (2.7V–3.4V), delivering 74.5dB SNR and 90dB SFDR at 5MHz input, with 110dB channel isolation at 100MHz. It supports flexible differential or single-ended analog inputs (±0.5V to ±1V range), features integrated clock duty cycle stabilization, and targets high-fidelity signal digitization in portable instrumentation and spectral analysis systems.
For engineers reviewing the LTC2296CUP#PBF datasheet, LTC2296CUP#PBF pinout, LTC2296CUP#PBF application, or LTC2296CUP#PBF equivalent, key selection criteria include its 25Msps sample rate, dual-channel 14-bit resolution with no missing codes over temperature, 575MHz full-power bandwidth, multiplexed or separate digital output bus capability, and support for internal/external reference configuration via SENSEA/SENSEB pins.
Technical Context
The LTC2296CUP#PBF implements a six-stage CMOS pipelined ADC architecture with 5-cycle pipeline latency and integrated sample-and-hold with 0.2psRMS aperture jitter. Its dual independent channels share no analog signal path, enabling true 110dB channel isolation at 100MHz while maintaining matched gain (±0.3%FS) and offset (±2mV).
Operation is controlled by a single-ended CLK input with optional duty cycle stabilization (enabled via MODE pin), and digital outputs are configurable for offset binary or 2's complement format. Output drivers support OVDD from 0.5V to 3.6V, allowing interface with 1.8V, 2.5V, or 3.3V logic families without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over 0°C to 70°C - guarantees monotonicity and full code coverage in production environments. |
| Sample Rate | 25Msps - fixed maximum sampling frequency defining real-time bandwidth limit of 12.5MHz (Nyquist). |
| SNR @ 5MHz | 74.5dB (typ) - enables >12-bit effective resolution for narrowband signals in instrumentation-grade applications. |
| SFDR @ 5MHz | 90dB (typ) - suppresses spurious tones below –90dBc, critical for detecting weak signals adjacent to strong interferers. |
| Power Dissipation | 150mW (typ) at 25Msps - enables battery-powered or thermally constrained designs without forced cooling. |
| Full-Power Bandwidth | 575MHz - supports accurate digitization of wideband IF signals up to ~200MHz with minimal amplitude roll-off. |
| Channel Isolation | –110dB at 100MHz - prevents crosstalk-induced measurement error in dual-channel synchronous acquisition systems. |
Pinout & Package
64-pin (9mm × 9mm) QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINA+/AINA– AINB+/AINB– | Differential analog inputs (Ch A/B) | Accept ±0.5V to ±1V differential signals; common-mode voltage programmable via SENSEA/SENSEB (1.5V or VDD). |
| CLKA/CLKB | Independent sampling clock inputs | Positive-edge triggered; each channel operates autonomously - enables asynchronous sampling or phase-aligned dual capture. |
| DA0–DA13 / DB0–DB13 | Parallel digital outputs (14-bit, MSB-first) | Configurable as separate buses or multiplexed onto one bus via MUX pin; output voltage swing set by OVDD (0.5V–3.6V). |
| OEA/OEB OFA/OFB | Output enable & overflow flags | Per-channel tri-state control (OEA/OEB) and overflow detection (OFA/OFB) simplify FPGA interface and data validity checking. |
| MODE MUX SHDNA/SHDNB | Configuration & power mode control | MODE selects output format (offset binary/2's complement) and duty cycle stabilizer; MUX swaps output buses; SHDNx enables nap/sleep modes (15mW/2mW per channel). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 14-bit ADC cores | Eliminates inter-channel timing skew and enables true simultaneous sampling for phase-sensitive measurements. |
| Programmable input range (±0.5V/±1V) | Allows direct interface with low-voltage sensors or IF amplifiers without external gain stages or attenuators. |
| Integrated clock duty cycle stabilizer | Enables high AC performance (74.5dB SNR) even with 40%–60% clock duty cycles - relaxes clock source design constraints. |
| Nap mode (15mW/channel) | Reduces power by >90% vs active mode while retaining configuration state - ideal for burst-mode acquisition systems. |
| 110dB channel isolation at 100MHz | Ensures <0.0001% signal coupling between channels - critical for differential measurement accuracy in imaging or I/Q demodulation. |
Applications
| Portable Spectrum Analyzers | Medical Ultrasound Beamformers |
|---|---|
Use Scenario: Real-time FFT-based spectral analysis in handheld RF test equipment with battery life constraints. IC Role / Device Role / Timing Role: Dual-channel ADC digitizes I/Q downconverted signals at 25Msps with synchronized sampling to preserve phase coherence. Use Value: 74.5dB SNR and 90dB SFDR enable detection of –80dBc spurs; 150mW total power allows >4 hours runtime on 2000mAh Li-ion. | Use Scenario: Multi-element ultrasound transducer array receiving analog echo signals requiring precise time-of-flight correlation. IC Role / Device Role / Timing Role: Simultaneous digitization of two adjacent receive channels with <1ps inter-channel skew for beam steering calculations. Use Value: 110dB channel isolation prevents cross-talk artifacts in B-mode images; 575MHz bandwidth preserves harmonic content up to 15MHz. |
| Industrial Motor Current Monitoring | Communications Baseband Receivers |
Use Scenario: High-accuracy three-phase current sensing in variable-frequency drives using shunt resistors and isolated amplifiers. IC Role / Device Role / Timing Role: Dual ADC captures phase A and B currents synchronously to compute instantaneous torque and detect imbalance faults. Use Value: ±1.2LSB INL and ±0.5LSB DNL ensure <0.03% measurement linearity across 0–100% load; no missing codes prevents data gaps during transient events. | Use Scenario: Digitizing baseband I/Q signals in LTE/Wi-Fi infrastructure receivers where dynamic range and adjacent channel rejection are critical. IC Role / Device Role / Timing Role: Dual ADC interfaces directly with quadrature demodulator outputs, supporting complex baseband sampling at 25Msps. Use Value: 90dB SFDR rejects strong adjacent-channel interferers; flexible OVDD (1.8V/2.5V/3.3V) simplifies FPGA interface without level translators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9257BCPZ-25 | 14-bit, 25Msps, single-supply 1.8V core + 3.3V I/O; 73.5dB SNR, 88dB SFDR; no integrated duty cycle stabilizer. | Lower power (125mW), but requires external clock conditioning and level-shifting for mixed-voltage systems. | Select when ultra-low power and small footprint (48-lead LFCSP) outweigh need for integrated clock cleanup. |
| LTC2292CUP#PBF | 12-bit, 40Msps, same pinout and feature set; 71.5dB SNR, 85dB SFDR; higher speed but reduced resolution. | Higher Nyquist bandwidth (20MHz) suits wider IF sampling; lower resolution limits dynamic range in precision measurement. | Select when system requires >25Msps sampling and can trade 2-bit resolution for 1.6× speed and improved SFDR at high frequencies. |
Compared with AD9257BCPZ-25 and LTC2292CUP#PBF, the LTC2296CUP#PBF uniquely balances 14-bit precision, integrated clock stabilization, and 110dB isolation in a single 25Msps device - making it optimal for portable, battery-operated, or phase-coherent dual-channel acquisition where external support circuitry must be minimized.
Availability
LTC2296CUP#PBF is available at Aetrix Electronics and suitable for portable instrumentation, medical ultrasound systems, industrial motor monitoring, and communications baseband receivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2296CUP#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 LTC2296CUP#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for applications demanding simultaneous dual-channel acquisition with exceptional dynamic range, low power, and minimal external components - such as portable test equipment and medical imaging front-ends.
FAQ
What is the guaranteed operating temperature range for the LTC2296CUP#PBF?
The LTC2296CUP#PBF is specified for operation from 0°C to 70°C (Commercial grade). This range is confirmed in the "PACKAGE/ORDER INFORMATION" section of the datasheet, where "LTC2296C" denotes the commercial temperature grade. The part marking "CUP" aligns with this grade, and all DC and AC specifications in the datasheet labeled with ● apply across this full range.
Does the LTC2296CUP#PBF support external reference configuration?
Yes, the LTC2296CUP#PBF supports both internal and external reference configurations. Applying an external voltage between 0.5V and 1.0V to SENSEA (Pin 62) or SENSEB (Pin 19) sets the input range to ±VSENSEA or ±VSENSEB respectively. The internal 1.5V reference (VCMA/VCMB) remains active, and external reference operation is validated in the "ANALOG INPUT" section of the datasheet with guaranteed performance.
How does the MUX pin affect data routing in the LTC2296CUP#PBF?
When MUX (Pin 21) is high, Channel A data appears on DA0–DA13/OFA and Channel B on DB0–DB13/OFB. When MUX is low, the routing swaps: Channel A outputs on DB0–DB13/OFB and Channel B on DA0–DA13/OFA. This allows either independent dual-bus operation or time-multiplexed single-bus use - confirmed in the "PIN FUNCTIONS" section and functional timing diagrams.
What is the minimum OVDD voltage supported by the LTC2296CUP#PBF for digital output operation?
The LTC2296CUP#PBF supports OVDD as low as 0.5V, as explicitly stated in the "POWER REQUIREMENTS" table under "OVDD Voltage" (MIN = 0.5V). At 0.5V OVDD, output logic levels meet specification with VOL ≤ 0.09V and VOH ≥ 0.4V (IO = 1.6mA sink), enabling direct interface with ultra-low-voltage FPGAs or ASICs.
Can the LTC2296CUP#PBF operate with only one channel active while the other is powered down?
Yes, the LTC2296CUP#PBF supports independent channel shutdown. Driving SHDNA (Pin 59) and OEA (Pin 58) to VDD places Channel A in sleep mode (2mW), while Channel B remains fully operational if SHDNB/OEB are configured for normal operation. This per-channel power control is documented in the "PIN FUNCTIONS" description for SHDNA/SHDNB and verified in the "POWER REQUIREMENTS" table.
LTC2296CUP#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 25M
- Number of Inputs:
- 2
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.4V
- Voltage - Supply, Digital:
- 2.7V ~ 3.4V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2296CUP#PBF FAQ
1.How can I place an order for LTC2296CUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2296CUP#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 LTC2296CUP#PBF reliable?
The price and inventory of LTC2296CUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2296CUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2296CUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2296CUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2296CUP#PBF?
LTC2296CUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2296CUP#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 LTC2296CUP#PBF?
For technical support, including LTC2296CUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2296CUP#PBF requirements.
6.How does Aetrix verify that LTC2296CUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2296CUP#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 LTC2296CUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2296CUP#PBF?
All LTC2296CUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2296CUP#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 LTC2296CUP#PBF part is unused and in its original packaging.
Return procedure for LTC2296CUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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