DC1241B-AA Linear Technology, DC1241B-AA Datasheet
DC1241B-AA
Specifications of DC1241B-AA
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DC1241B-AA Summary of contents
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... Cellular Base Stations n Spectrum Analyzers L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Simplifi Receiver Channel ...
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LTM9001-Ax/LTM9001-Bx ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Supply Voltage (V ) ................................ –0.3V to 3.6V CC Supply Voltage (V ) ................................... –0. Digital Output Supply Voltage ( – Analog Input Current ( ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER V Input Common Mode Voltage Range INCM V Input Voltage Range at –1dBFS IN R Differential Input Impedance INDIFF C Differential Input Capacitance INDIFF V Offset Error (Note ...
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LTM9001-Ax/LTM9001-Bx DYNAMIC ACCURACY otherwise specifi cations are 25° SYMBOL PARAMETER SFDR Spurious Free Dynamic Range, 2nd or 3rd Harmonic SFDR Spurious Free Dynamic Range 4th or Higher S/(N+D) Signal-to-Noise Plus Distortion Ratio SFDR Spurious Free ...
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DIGITAL INPUTS AND OUTPUTS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Logic Inputs (DITH, PGA, ADCSHDN, RAND) V High Level Input Voltage IH V Low Level Input Voltage IL I Input Current IN C Input Capacitance IN ...
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LTM9001-Ax/LTM9001-Bx POWER REQUIREMENTS range, otherwise specifi cations are SYMBOL PARAMETER Standard LVDS Output Mode OV Output Supply Voltage DD I Analog Supply Current VDD I Output Supply Current OVDD P Power Dissipation DISS Low Power LVDS Output ...
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TIMING CHARACTERISTICS range, otherwise specifi cations are SYMBOL PARAMETER CMOS Output Mode t ENC to DATA Delay D t ENC to CLKOUT Delay C t DATA to CLKOUT Skew SKEW Data Latency Note 1: Stresses beyond those ...
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LTM9001-Ax/LTM9001-Bx TIMING DIAGRAM ANALOG INPUT N – ENC + ENC D0-D15 CLKOUT – CLKOUT ANALOG INPUT N – ENC + ENC DA0-DA15, OFA CLKOUTA CLKOUTB DB0-DB15, OFB 8 LVDS Output Mode Timing All Outputs are Differential and Have ...
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TIMING DIAGRAM ANALOG INPUT N – ENC + ENC DA0-DA15, OFA DB0-DB15, OFB CLKOUTA CLKOUTB LTM9001-Ax/LTM9001-Bx Demultiplexed CMOS Output Mode Timing All Outputs are Single-Ended and Have CMOS Levels ...
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LTM9001-Ax/LTM9001-Bx TYPICAL PERFORMANCE CHARACTERISTICS Differential Non-Linearity (DNL) vs Output Code 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 0 16384 32768 49152 65536 ADC OUTPUT CODE 9001 G01 Input Impedance vs Frequency 250 200 150 100 50 ...
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TYPICAL PERFORMANCE CHARACTERISTICS 64k Point 2-Tone FFT 161.5MHz, IN and 163.5MHz, –15dBFS, PGA = 0, RAND “Off”, Dither “Off” 0 –20 –40 –60 –80 –100 –120 FREQUENCY (MHz) 9001 G09 SFDR ...
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LTM9001-Ax/LTM9001-Bx TYPICAL PERFORMANCE CHARACTERISTICS Differential Non-Linearity (DNL) vs Output Code 1.0 0.8 0.6 0.4 0.2 0.0 –0.2 –0.4 –0.6 –0.8 –1.0 0 16384 32768 49152 65536 OUTPUT CODE 9001 G25 Input Impedance vs Frequency 220 200 MAGNITUDE 180 PHASE 160 ...
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TYPICAL PERFORMANCE CHARACTERISTICS Differential Non-Linearity (DNL) vs Output Code 1.0 0.8 0.6 0.4 0.2 0.0 – 0.2 –0.4 –0.6 –0.8 –1.0 0 16384 32768 49152 65536 OUTPUT CODE 9001 G17 Input Impedance vs Frequency 400 MAGNITUDE 350 300 PHASE 250 ...
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LTM9001-Ax/LTM9001-Bx PIN FUNCTIONS Supply Pins V (Pins E1, E2): 3.3V Analog Supply Pin for Amplifi er. CC The voltage on this pin provides power for the amplifi er stage only and is internally bypassed to GND. V (Pins E5, D5): ...
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PIN FUNCTIONS Digital Outputs For CMOS Mode, Full Rate or Demultiplexed DA0 to DA15 (Pins E9 to H5): Digital Outputs, A Bus. DA15 is the MSB. Output bus for full rate CMOS mode and demultiplexed mode. CLKOUTA (Pin E8): Inverted ...
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LTM9001-Ax/LTM9001-Bx FUNCTIONAL BLOCK DIAGRAM 16 9001fc ...
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OPERATION DYNAMIC PERFORMANCE DEFINITIONS Signal-to-Noise Plus Distortion Ratio The signal-to-noise plus distortion ratio [S/(N+D)] is the ratio between the RMS amplitude of the fundamental input frequency and the RMS amplitude of all other frequency components at the ADC output. Signal-to-Noise ...
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... The fi nal result is a fully integrated, accurately tested and reliable solution. For more details ADC on the semi-custom receiver subsystem program, contact Linear Technology. 9001 F01 Note that not all combinations of options in Table 1 are possible at this time and specifi ed performance may differ signifi ...
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OPERATION ADC INPUT NETWORK The passive network between the amplifi er output stage and the ADC input stage can be confi gured for bandpass or lowpass response with different cutoff frequencies and bandwidths. The LTM9001-AA, for example, implements a 2-pole ...
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LTM9001-Ax/LTM9001-Bx APPLICATIONS INFORMATION Alternatively, one could apply a narrowband impedance match at the inputs for frequency selection and/or noise reduction. Referring to Figure 4, amplifi er inputs can be easily confi gured for single-ended input without a balun. The signal ...
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APPLICATIONS INFORMATION PGA Pin The PGA pin selects between two gain settings for the ADC front-end. PGA = low selects the maximum input span; PGA = high selects a 3.5dB lower input span. The high input range has the best ...
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LTM9001-Ax/LTM9001-Bx APPLICATIONS INFORMATION An optional clock duty cycle stabilizer can be used if the input clock does not have a 50% duty cycle. This circuit uses the rising edge of ENC to sample the analog input. The falling edge of ...
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APPLICATIONS INFORMATION As with all high speed/high resolution converters, the digital output loading can affect the performance. The digital outputs of the LTM9001 should drive a minimum capacitive load to avoid possible interaction between the digital outputs and sensitive input ...
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LTM9001-Ax/LTM9001-Bx APPLICATIONS INFORMATION Output Clock The ADC has a delayed version of the encode input available as a digital output, CLKOUT. The CLKOUT pin can be used to synchronize the converter data to the digital system. This is necessary when ...
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APPLICATIONS INFORMATION example, if the converter is driving a DSP powered by a 1.8V supply, then OV should be tied to that same 1.8V DD supply. OV can be powered with any logic voltage the 3.6V. OGND ...
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LTM9001-Ax/LTM9001-Bx APPLICATIONS INFORMATION Grounding and Bypassing The LTM9001 requires a printed circuit board with a clean unbroken ground plane; a multilayer board with an internal ground plane is recommended. The pinout of the LTM9001 has been optimized for a fl ...
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APPLICATIONS INFORMATION Figure 15. Layer 1 Figure 17. Layer 3 LTM9001-Ax/LTM9001-Bx Figure 16. Layer 2 Figure 18. Layer 4 9001fc 27 ...
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... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LGA Package 81-Lead (11.25mm × 11.25mm × 2.32mm) ...
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REVISION HISTORY (Revision history begins at Rev C) REV DATE DESCRIPTION C 7/10 Updated Timing Characteristics section LTM9001-Ax/LTM9001-Bx PAGE NUMBER 6, 7 9001fc 29 ...
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... SNR, 100dB SFDR 1250mW, 77.7dB SNR, 100dB SFDR 1450mW, 77.1dB SNR, 100dB SFDR 3V, 90mA, 39.5dBm OIP3 at 300MHz, 6dB NF 3V, 45mA, 45.5dBm OIP3 at 140MHz, 6dB NF www.linear.com ● LTM9001 – IN 9001 TA02 LT 0710 REV C • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 9001fc ...