EV12AD500A

EV12AD500A
1 / 48 PagesView full catalog

EV12AD500A

Product catalog summary
Overview: The EV12AD500A is a dual S-band capable 12-bit ADC designed for high spectral purity applications. It features a 3dB input bandwidth of 5.2GHz, allowing digitization in the S-band without frequency conversion. It supports wideband communication and radar systems with reduced dynamic range beyond 5GHz. The device outputs data in LVDS format or via a high-speed serial link using the ESIstream protocol. It includes a synchronization feature for multiple ADCs, suitable for active antenna arrays or MIMO systems. The device offers dual-channel crosstalk isolation over 80dB and a Noise Power Ratio (NPR) performance beyond 50dB in the first Nyquist zone.
Applications: The ADC is suitable for wideband communication systems, phased-array/MIMO communication systems, phased-array/MIMO radar systems, and instrumentation.
Features: The ADC features dual-channel 12-bit 1.5GSps capability, single-core architecture, differential analog input voltage of 1Vppd, full power input bandwidth of 5.2GHz, differential clock input, and power consumption of 2.3W per channel. It supports single or dual rail power supplies, LVDS DEMUX 1:1 or serial ESIstream output interfaces, and comes in a CBGA255 package. Additional features include SPI configuration, multiple ADC chained synchronization, test modes, and control bits for parity, in-range, trigger, and timestamp.
Performance: At 1.5GSps, the ADC offers a 5.2GHz analog input bandwidth, NPR of 50 dB over the first Nyquist zone, and SFDR of 70 dBFS at 100MHz. Latency is less than 7.5ns in LVDS output and less than 17ns in serial output.
Specifications: The document details absolute maximum ratings, recommended conditions of use, and electrical characteristics for supplies, inputs, and outputs. It includes power requirements, analog and clock input specifications, and SPI input/output characteristics. The ADC operates over a temperature range of -40°C to +110°C and is available in a HiTCE255 package.
Static Characteristics: The document outlines the static characteristics of the ADC, including gain variation, DC offset, and linearity. Gain variation is specified as -1.5 to 1.5 dB, with temperature variation between -0.5 to 0.5 dB. DC offset is calibrated to within ±0.25 LSB.
Dynamic Characteristics: The ADC's dynamic characteristics include full power input bandwidths of 3.7 GHz (nominal) and 5.2 GHz (extended). Gain flatness is maintained within ±0.5 dB over specified bandwidths. Noise Power Ratio (NPR) and Spurious Free Dynamic Range (SFDR) are detailed for various Nyquist zones and input frequencies.
Transient and Switching Characteristics: Transient characteristics include ADC Code Error Rates at different sampling rates and overvoltage recovery time of 666 ps. Switching characteristics cover external clock frequency, sampling frequencies, and various delay times.
Digital Output Coding: The document provides a table for ADC digital output coding, detailing binary output for differential analog input voltage levels.
Definitions: Key terms such as Code Error Rate (CER), Differential Non-Linearity (DNL), Effective Number Of Bits (ENOB), and others are defined to clarify the ADC's performance metrics.
Figures and Diagrams: Timing diagrams for DEMUX 1:1 and serial ESIstream modes are included, illustrating the timing relationships between various signals and outputs.
Specifications and Encoding: The document describes the encoding process where 14 bits of scrambled data are encoded into a 16-bit frame. This includes a clock bit that toggles every frame and a disparity bit to ensure the advantages of scrambling are maintained. The running disparity is monitored to prevent data corruption and loss of synchronization.
Synchronization: Synchronization between the transmitter and receiver is achieved through a SYNC signal. The process involves sending an alignment pattern followed by frames containing the PRBS sequence. The receiver uses these to align and synchronize with the transmitter.
Control Bits: Control bits CB1 and CB2 are configurable through a register. CB1 can be an in-range control bit or a parity bit, while CB2 can be a timestamp or trigger bit. These bits help in monitoring the ADC input status and synchronization.
Swing Adjust and Input Configuration: The document outlines options for adjusting the swing of serial outputs to optimize power consumption and reception quality. Input impedance, bandwidth, and common mode can be trimmed for optimal performance.
SYNCTRIG Input: The SYNCTRIG input is used for synchronization and can operate in SYNC or trigger mode. It is crucial for ensuring deterministic timing and synchronization of multiple ADCs.
SYNCO and SSO Outputs: SYNCO and SSO outputs are used for device synchronization. They are LVDS signals with configurable swing settings.
Temperature Calibration: Factory calibration sets are available for different temperature ranges. The appropriate set can be selected based on the operating temperature to optimize performance.
Single Event Protection: The document details protection mechanisms against radiation effects, including extra protection modes and CRC checking to ensure calibration integrity.
Interleaving the Cores: Interleaving or aligning the sampling clocks of channels A and B can be controlled by the CLKINT bit in the CHIP_CTRL register. When CLKINT is '0', clocks are in phase; when '1', they are in phase opposition for interleaving. Offset, gain, and phase of each core can be corrected using embedded DACs, adjustable via SPI commands.
Sampling Delay Adjust (SDA): The sampling instant of each ADC core is adjustable with fine clock shifters, providing 1023 steps of 10fs delay. The SDA is configured through the X_SDA_CTRL register and impacts jitter performance. It must be enabled or disabled on both channels.
Stand-by Modes: Controlled through the STDBY register, channels can be put in full stand-by independently, reducing power consumption while maintaining output interface operation.
Die Junction Temperature Monitoring Diode: Two pins allow temperature diode probing using standard sensors. A current of 1 mA is applied to the DIODEA pin to measure junction temperature.
Power Supplies Recommendation and Decoupling: The ADC operates with a single rail, with recommendations for ferrite and decoupling capacitance to avoid power supply pollution. Specific decoupling configurations are provided for different supply setups.
Analog Inputs: Inputs can be DC or AC coupled, with phase and amplitude imbalances affecting linearity performance. Input drivers should minimize these effects, and trace lengths should be matched.
Ordering Information: Details on part numbers, package types, temperature ranges, and screening levels are provided.
Revision History: Lists updates and changes made to the document over time.
See more

Catalog excerpts

EV12AD500A-1

Bringing life \ ^ ^ V to technology PRELIMINARY DATASHEET OVERVIEW EV12AD500A is a dual S-band capable 12bit ADC intended for various applications that is built using a true single core architecture providing high spectral purity. With a 3dB input bandwidth of 5.2GHz it allows for digitization in S-band without frequency conversion. Wideband communication and radar systems will also be able to operate this ADC with reduced dynamic range at frequencies beyond 5GHz without frequency down-conversion. This device outputs data either in LVDS format with low latency or high speed serial link using the ESIstream (Efficient Serial Interface) protocol. It proposes a multiple ADC chained synchronization feature. Along with the serial interface, it helps designing large array of synchronous ADC in active antenna array or MIMO systems. Dual channel crosstalk isolation exhibits figure in excess of 80dB and Noise Power Ratio performance beyond 50dB in the first Nyquist zone. This device comes in a flip chip CBGA255 package in HiTCE® substrate with High Temperature Coefficient of Expansion. APPLICATIONS ■ Wideband communication system ■ Phased-array/MIMO communication system ■ Phased-array/MIMO radar system ■ Instrumentation FEATURES Dual channel 12 bits 1.5GSps ADC ■ Single core architecture ADC ■ Differential analog input voltage: 1Vppd ■ Full Power Input bandwidth (-3dB): 5.2GHz ■ Differential clock input ■ Power consumption: 2.3W / channel ■ Power supplies: Single Rail 3.4V or Dual rail 3.4V/2.5V ■ Output interface: LVDS DEMUX 1:1 or serial ESIstream ■ Package: CBGA255 14x14mm / 0.8mm pitch ■ SPI configuration ■ Multiple ADC chained synchronization ■ Test mode: ramp, flash, PRBS ■ Control bit: parity, in-range, trigger, timestamp ■ Clock input up to 3GHz PERFORMANCE @ 1.5GSps ■ 5.2GHz analog input bandwidth (-3dB) ■ 50 dB NPR over 1st Nyquist ■ Latency < 7.5ns in LVDS output ■ Latency < 17ns in serial output Whilst e2v technologies has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use thereof and also reserves the right to change the specification of goods without notice. e2v technologies accepts no liability beyond the set out in its standard conditions of sale in respect of infringement of third party patents arising from the use of tubes or other devices in accordance with information contained herein. e2v technologies (uk) limited, Waterhouse Lane, Chelmsford, Essex CM1 2QU United Kingdom Holding Company: e2v technologies plc Telephone: +44 (0)1245 493493 Facsimile: +44 (0)1245 492492 Contact e2v by e-mail: [email protected] or visit www.e2v.com for global sales and operations centres.

 Open the catalog to page 1
EV12AD500A-2

Dual channel 12 bits 1.5GSps ADC1 Bloc Diagrams 1.1 DEMUX 1:1 ADR Channel A data ready High port BDR Channel B data ready High port 1.2 High speed serial interface Document subject to disclaimer on page 1

 Open the catalog to page 2
EV12AD500A-3

Dual channel 12 bits 1.5GSps ADC The EV12AD500A is a dual 12 bit 1.5GSps ADC featuring low latency LVDS 1:1 parallel output and a high speed serial output option based on the ESIstream (Efficient Serial Interface) protocol. The two channels can operate in phase or in opposition, thus allowing synchronous or interleaved sampling. Each channel is composed of a true single core ADC sampling at up to 1.5GSps. Based on an innovative architecture without interleaving, it provides high spectral purity. It offers an analog input bandwidth up to 5.2GHz with 2 selectable configurations to optimize SNR...

 Open the catalog to page 3
EV12AD500A-4

Dual channel 12 bits 1.5GSps ADC 3 Specifications 3.1 Absolute maximum ratings Absolute maximum ratings are limiting values (referenced to GND = 0V), to be applied individually, while other parameters are within specified operating conditions. Exposure to maximum ratings may affect device reliability. Table 1: Absolute maximum ratings Document subject to disclaimer on page 1

 Open the catalog to page 4
EV12AD500A-5

Dual channel 12 bits 1.5GSps ADC3.2 Recommended conditions of use Table 3: Recommended conditions of use Notes: Only MIN and MAX values are guaranteed. 1. Unless otherwise specified Document subject to disclaimer on page 1

 Open the catalog to page 5
EV12AD500A-6

Dual channel 12 bits 1.5GSps ADC 3.4 Electrical characteristics for supplies, inputs and outputs Unless otherwise specified: - Typical values are given for typical supplies in dual-rail configuration (Refer to Table 18 in section Output selection for more information) at Tamb = +25°C - Minimum and maximum values are given over corresponding temperature range for typical power supplies - Values are given with SDA disabled Table 6: Electrical characteristics for supplies, inputs and outputs Document subject to disclaimer on page 1

 Open the catalog to page 6
EV12AD500A-7

Document subject to disclaimer on page 1

 Open the catalog to page 7
EV12AD500A-8

Notes: 1. Refer to Table 18 in section Output selection for more information on power supplies management 2. Enabling SDA increases power consumption by 80mW (23mA on VCCA) 3. The DC analog common mode voltage is provided by the CMIREF output of the ADC 4. See section Input common mode trimming for more information on the range available 5. For optimal performance, in terms of VSWR, the input impedance must be 50Q ± 5% and the analog input impedance must be digitally trimmed to cope with process deviation. Refer to section Input impedance trimming for more information 6. The crosstalk specified...

 Open the catalog to page 8
EV12AD500A-9

Dual channel 12 bits 1.5GSps ADC 3.5 Converter characteristics Unless otherwise specified: - Typical values are given for typical supplies in dual-rail configuration (Refer to Table 18 in section Output selection for more information) at Tamb = +25°CBoth cores comply with the below specification when the OTP have been loaded - Minimum and maximum values are given over corresponding temperature range for typical power supplies - Values are specified at Fs = 1.5GSps for the serial mode and Fs = 1.3GSps for LVDS DMUX1:1 mode - Values are given with SDA disabled Table 7: Static characteristics Document...

 Open the catalog to page 9
EV12AD500A-10

Document subject to disclaimer on page 1

 Open the catalog to page 10
EV12AD500A-11

Dual channel 12 bits 1.5GSps ADC Parameter • Fin = 2980MHz, EBW Signal to Noise And Distortion Output level -1dBFS • Fin = 100MHz, NBW Output level -8dBFS • Fin = 100MHz, NBW • Fin = 1480MHz, NBW Effective Number Of Bits Output level -1dBFS • Fin = 100MHz, NBW • Fin = 1480MHz, NBW Output level -8dBFS • Fin = 100MHz, NBW • Fin = 1480MHz, NBW Noise Spectral density at -1dBFS • 1st Nyquist zone, NBW Noise Spectral density at -8dBFS • 1st Nyquist zone, NBW Test level dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBm/Hz dBm/Hz dBm/Hz dBm/Hz dBm/Hz dBm/Hz dBm/Hz dBm/Hz...

 Open the catalog to page 11
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.