My Inquiry
My Account
Analog Devices Inc. LTC2158CUP-12#PBF
- Part No.:
- LTC2158CUP-12#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2158CUP-12#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,436
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2158CUP-12#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, 12-bit, 310Msps analog-to-digital converter optimized for high-frequency undersampling in communications infrastructure. It delivers 67.6dBFS SNR, 88dB SFDR, and 1.25GHz full-power bandwidth with DDR LVDS outputs, operating from a single 1.8V supply. It serves as the front-end digitizer in cellular basestations and software-defined radios.
For engineers reviewing the LTC2158CUP-12#PBF datasheet, LTC2158CUP-12#PBF pinout, LTC2158CUP-12#PBF application, or LTC2158CUP-12#PBF equivalent, key selection criteria include simultaneous sampling accuracy, low-latency 6-cycle pipeline, configurable LVDS output current (1.75–4.5mA), clock duty cycle stabilization, and support for internal/external reference modes.
Technical Context
The LTC2158CUP-12#PBF implements two independent 12-bit pipelined ADC cores sharing a common sample-and-hold and encode path, enabling true simultaneous sampling. Its 1.25GHz S/H bandwidth supports RF input frequencies up to 907MHz with usable dynamic range.
Digital interface uses DDR LVDS with programmable output current (1.75–4.5mA) and optional on-chip 100Ω termination per pair. Configuration is handled via SPI port (CS/SCK/SDI/SDO) or parallel mode (PAR/SER-selectable), supporting sleep (<5mW), nap (190mW), and full-speed (688mW) operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in demanding measurement systems. |
| Sampling Rate | 310Msps maximum - enables direct RF sampling of LTE, WCDMA, and WiMAX bands without analog downconversion. |
| SNR / SFDR | 67.6dBFS SNR and 88dB SFDR at 70MHz input - ensures high-fidelity signal capture for spectral analysis and modulation quality assessment. |
| Input Bandwidth | 1.25GHz full-power bandwidth - supports undersampling of IF signals up to 907MHz while maintaining >64dBFS SNR. |
| Power Consumption | 688mW total at 310Msps (340mA VDD + 42mA OVDD) - balances performance and thermal management in dense RF modules. |
| Supply Voltage | Single 1.8V analog (VDD) and digital (OVDD) supply - simplifies power delivery and reduces board-level DC/DC count. |
| Pipeline Latency | 6 clock cycles - enables deterministic timing alignment in real-time DSP loops and FPGA-based demodulators. |
Pinout & Package
Package: 64-lead (9mm × 9mm) plastic QFN 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 1.32VP-P differential signal centered at VCM (0.435×VDD); require 180° phase matching for optimal CMRR. |
| ENC+/ENC– | Differential encode clock inputs | Trigger conversion on rising/falling edges; support sine wave, LVDS, PECL, TTL, or CMOS drive; duty cycle stabilizer enabled via CS or SPI. |
| DA0_1+ to DA10_11+, DB0_1+ to DB10_11+ | DDR LVDS data outputs (Ch A & B) | Each pair carries two time-multiplexed bits (even on CLKOUT low, odd on CLKOUT high); 100Ω on-chip termination optional via SPI. |
| CLKOUT+/CLKOUT– | DDR LVDS output clock | Phase-shiftable (0°/45°/90°/135°) and invertible via SPI register A2; required for synchronous data capture in FPGA receivers. |
| OF+/OF– | Overflow/underflow indicator | Double-data-rate output indicating saturation on Ch A (CLKOUT low) or Ch B (CLKOUT high); same 6-cycle latency as data. |
| SENSE, VREF, VCM | Reference control and bias | SENSE selects internal (VDD) or external (1.23–1.27V) reference; VREF = 1.25V output; VCM = 0.435×VDD common-mode bias for analog inputs. |
| PAR/SER, CS, SCK, SDI, SDO | Configuration interface | Serial (PAR/SER = GND) or parallel (PAR/SER = VDD) mode; controls LVDS current, clock phase, duty cycle stabilizer, and power modes. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Enables coherent I/Q digitization without channel skew-critical for zero-IF and direct-conversion receivers. |
| Programmable LVDS output current (1.75–4.5mA) | Allows optimization of signal integrity and power across varying trace lengths and receiver input sensitivities. |
| Optional clock duty cycle stabilizer | Permits use of non-50% clocks (30–70%) while maintaining full 310Msps performance-simplifies clock tree design. |
| Configurable output clock phase shift (0°–315°) | Compensates for PCB trace delays and FPGA input timing margins without external delay lines or PLLs. |
| Low-power sleep (<5mW) and nap (190mW) modes | Supports rapid power-state transitions in burst-mode systems like TDD base stations and radar pulse processing. |
Applications
| Cellular Basestation Receiver | Software Defined Radio (SDR) |
|---|---|
Use Scenario: Digitizing 70–140MHz IF signals from multi-carrier GSM/UMTS/LTE front-ends in macrocell and small-cell base stations. IC Role / Device Role / Timing Role: Dual-channel ADC capturing I/Q data streams with <6-cycle deterministic latency for real-time digital predistortion and MIMO processing. Use Value: 88dB SFDR prevents adjacent-channel interference masking weak signals; 1.25GHz bandwidth allows flexible IF placement without analog filtering overhead. | Use Scenario: Wideband spectrum monitoring and adaptive waveform reception across HF to L-band in military and cognitive radio platforms. IC Role / Device Role / Timing Role: High-speed digitizer feeding FPGA-based FFT engines and channelizers; supports reconfigurable sample rates via SPI-controlled clock scaling. Use Value: 67.6dBFS SNR ensures detection of low-SNR signals in crowded RF environments; DDR LVDS interface minimizes routing congestion on high-density SDR carrier boards. |
| Medical Ultrasound Beamformer | High-Speed Test Equipment |
Use Scenario: Sampling echo return signals from phased-array transducers operating at 5–15MHz center frequencies with wide dynamic range requirements. IC Role / Device Role / Timing Role: Simultaneous digitization of multiple receive channels for digital beamforming; low INL (±0.6LSB) preserves spatial resolution. Use Value: 0.6LSBRMS transition noise and ±0.1LSB DNL ensure accurate amplitude mapping of tissue interfaces; 1.32VP-P input range matches typical LNA output swing. | Use Scenario: Real-time signal analysis in oscilloscopes and vector signal analyzers requiring >100MHz instantaneous bandwidth and high spurious-free resolution. IC Role / Device Role / Timing Role: Core acquisition engine capturing transient events and modulated waveforms; supports FFT-based spectral analysis up to Nyquist (155MHz). Use Value: 98dB SFDR (4th+ harmonics) enables clean harmonic distortion measurement; 6-cycle latency allows tight trigger-to-capture timing in jitter analysis applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9680BCPZ-500 | 14-bit, 500Msps, JESD204B serial interface, higher power (1.5W), wider temp range (–40°C to +85°C) | Targets higher-resolution radar and broadband instrumentation where JESD204B backplane integration is preferred over LVDS point-to-point routing | Select when system requires >12-bit ENOB or FPGA with JESD204B PHY; not pin-compatible |
| LTC2165IUP-14#PBF | 14-bit, 130Msps, same QFN-64 package, lower power (440mW), identical SPI interface and pinout except reduced speed grade | Suitable for cost-sensitive or thermally constrained designs where 130Msps suffices (e.g., narrowband comms, legacy test gear) | Select for drop-in replacement in existing layouts needing higher resolution at lower speed; shares footprint and register map |
Compared with AD9680BCPZ-500 and LTC2165IUP-14#PBF, the LTC2158CUP-12#PBF uniquely balances 310Msps speed, 12-bit precision, and LVDS simplicity in a thermally efficient 1.8V QFN package-ideal for space-constrained, high-channel-count RF systems where JESD204B adds complexity and 14-bit resolution is unnecessary.
Availability
LTC2158CUP-12#PBF is available at Aetrix Electronics and suitable for cellular basestations, software-defined radios, medical ultrasound systems, and high-speed test equipment requiring stable component supply across production lifecycles.
Supply support for LTC2158CUP-12#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 technologies, serving aerospace, communications, industrial, and healthcare markets.
The LTC2158 family was designed by Analog Devices to address the need for low-power, high-speed dual-channel ADCs in next-generation wireless infrastructure-emphasizing RF undersampling capability, deterministic latency, and flexible digital interface configuration.
FAQ
What is the operating temperature range for the LTC2158CUP-12#PBF?
The LTC2158CUP-12#PBF is rated for commercial temperature operation from 0°C to +70°C. This grade is specified in the ordering information and confirmed in the Absolute Maximum Ratings table. For extended industrial operation (–40°C to +85°C), the LTC2158IUP-12#PBF variant is available. The C-grade version is intended for controlled-environment applications such as indoor basestations and lab-grade test equipment.
Does the LTC2158CUP-12#PBF support both internal and external voltage references?
Yes, the LTC2158CUP-12#PBF supports both reference modes. Connecting the SENSE pin to VDD enables the internal 1.25V reference and sets the analog input range to ±0.66V (1.32VP-P). Applying an external reference between 1.230V and 1.270V to SENSE selects an input range of ±0.528 × VSENSE. The VREF pin outputs the internal reference voltage and must be bypassed with a 2.2µF capacitor.
How is the DDR LVDS output data structured on the LTC2158CUP-12#PBF?
The LTC2158CUP-12#PBF outputs 12-bit data per channel using double-data-rate LVDS. Each differential pair (e.g., DA0_1+, DA0_1–) carries two time-multiplexed bits: even-index bits (DA0, DA2, ..., DA10) appear when CLKOUT+ is low, and odd-index bits (DA1, DA3, ..., DA11) appear when CLKOUT+ is high. This structure halves the required number of LVDS pairs versus single-data-rate, reducing PCB routing complexity.
Can the LTC2158CUP-12#PBF operate with non-50% duty cycle clock inputs?
Yes, the LTC2158CUP-12#PBF includes an optional clock duty cycle stabilizer that accepts encode inputs with duty cycles from 30% to 70% and generates an internal 50% clock for sampling. This feature is enabled via the CS pin in parallel mode or SPI register A2. When disabled, the part requires a 50% ±5% duty cycle for optimal AC performance.
What power-saving modes does the LTC2158CUP-12#PBF support?
The LTC2158CUP-12#PBF supports three power states: full-speed operation (688mW at 310Msps), nap mode (190mW with clock active), and sleep mode (<5mW with clock disabled). Nap mode retains configuration and enables fast wake-up; sleep mode powers down most circuitry. Both low-power modes are controlled via SPI or parallel logic inputs (SCK in PAR/SER = VDD mode).
LTC2158CUP-12#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:
- 12
- Sampling Rate (Per Second):
- 310M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - 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:
- 1.74V ~ 1.9V
- Voltage - Supply, Digital:
- 1.74V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2158CUP-12#PBF FAQ
1.How can I place an order for LTC2158CUP-12#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2158CUP-12#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 LTC2158CUP-12#PBF reliable?
The price and inventory of LTC2158CUP-12#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2158CUP-12#PBF is usually 5 days.
3.What payment methods are accepted for LTC2158CUP-12#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2158CUP-12#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2158CUP-12#PBF?
LTC2158CUP-12#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2158CUP-12#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 LTC2158CUP-12#PBF?
For technical support, including LTC2158CUP-12#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2158CUP-12#PBF requirements.
6.How does Aetrix verify that LTC2158CUP-12#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2158CUP-12#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 LTC2158CUP-12#PBF meets industry standards.
7.What is the process for return or replacement of LTC2158CUP-12#PBF?
All LTC2158CUP-12#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2158CUP-12#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 LTC2158CUP-12#PBF part is unused and in its original packaging.
Return procedure for LTC2158CUP-12#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2158CUP-12#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…
