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SA621

Features: • Low current consumption• Outstanding gain and noise figure• Excellent gain stability versus temperature and supply voltage• LNA, mixer and VCO power down capability• Monotonic VCO frequency vs control voltageApplication• 900MHz cellular and cordless ...

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SeekIC No. : 004483774 Detail

SA621: Features: • Low current consumption• Outstanding gain and noise figure• Excellent gain stability versus temperature and supply voltage• LNA, mixer and VCO power down capabili...

SA621 Data Sheet

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Part Number:
SA621
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Low current consumption
• Outstanding gain and noise figure
• Excellent gain stability versus temperature and supply voltage
• LNA, mixer and VCO power down capability
• Monotonic VCO frequency vs control voltage


Application

• 900MHz cellular and cordless front-end
• Spread spectrum receivers
• RF data links
• UHF frequency conversion
• Portable radio


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER RATING UNITS
VCC Supply voltage1 -0.3 to +6 V
VIN Voltage applied to any other pin -0.3 to (VCC + 0.3) V
PD Power dissipation, TA = 25°C (still air)2
20-Pin Plastic SSOP		 980 mW
TJMAX Maximum operating junction temperature 150 °C
PMAX Maximum power input/output +20 dBm
TSTG Storage temperature range 65 to +150 °C

NOTE:
1. Transients exceeding 8V on VCC pin may damage product.
2. Maximum dissipation is determined by the operating ambient temperature and the thermal resistance,
                                                            JA: 20-Pin SSOP = 110°C/W
3. Pins 19 and 20 are ESD sensitive (mixer outputs).


Description

The SA621 is a combined low-noise amplifier, mixer and VCO designed for high-performance low-power communication systems from 800-1000MHz. The low-noise preamplifier SA621 has a 1.7dB noise figure at 881MHz with 15dB gain and an IP3 intercept of -7dBm at the input. The gain is stabilized by on-chip compensation to vary less than ±0.2dB over -40 to +85°C temperature range. The wide-dynamic-range mixer has a 12dB noise figure and IP3 of +4.5dBm at the input at 881MHz. The integrated VCO circuit SA621 with external resonator produces a high quality LO signal that drives the mixer and is buffered to an external PLL synthesizer IC. The nominal current drawn from a single 3V supply is 13.3mA. Additionally, the entire circuit can be powered down to further reduce the supply current to less than 20A.




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