AD6140 Datasheet | Analog Devices

FEATURES IF Subsystem Bandpass ⌺⌬ Modulator Variable-Gain Preamplifier with 13 d B of AGC Range Mixer AGC Detector Op Amp for LNA Biasing ECL-to-CMOS Level Translator Ultralow Power Design 2.7 V Operating Voltage 4.8 m A Current Consumption Power-Down Control Small 20-Lead SSOP Package APPLICATIONS FLEX™, Re FLEX™ Receivers Multimode Receivers Bandpass ⌺⌬ IF Subsystem AD6140 The AD6140 is a bandpass Σ∆ ADC IF IC for receivers requiring a high dynamic range and multiple filter bandwidths. With an external decimation filter, it creates a multibit analog-to-digital converter. The AD6140 consists of a variable gain, low noise preamplifier, mixer, AGC detector, bandpass Σ∆ modulator, an ECL-to-CMOS level translator for the system clock, and an auxiliary amplifier for use in biasing a discrete LNA. It is designed to operate with Motorola’s Re FLEX chipset solution. Contact Motorola directly for more information about the Re FLEX chipset solution. With data and clock outputs at CMOS logic levels, it interfaces to an external decimation filter. It es in a 20-lead plastic SSOP and operates over the - 40°C to +85°C industrial temperature range at 2.7 V. GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM LO_IN+ LO_IN- MIXER POST AMPLIFIER ⌬ MODULATOR ⌬_DATA_OUT ⌬_CLOCK_OUT PREAMPLIFIER IF_INPUT LNA_SENSE LNA_FORCE LNA BIAS AMPLIFIER MIXER AGC DETECTOR CIRCUIT ECL-TO-CMOS LEVEL-SHIFTER BUFFER_VDD CLK_IN+ CLK_IN- AGC_CAPACITOR 0.1␮F AGC_TC_SELECT BIAS SYSTEM BUFFER_GND VOLTAGE_REFERENCE_IN RINT AVDD AGND DGND DVDD POWER_DOWN BIAS_RESISTOR 39k⍀ FLEX and Re FLEX are trademarks of Motorola, Inc. REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way,...