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SA620
Datasheet
General description
The SA620 is a combined RF amplifier, VCO with tracking bandpass filter and mixer designed for high-performance low-power communication systems from 800-1200MHz. The low-noise preamplifier has a 1.6dB noise figure at 900MHz with 11.5dB gain and an IP3 intercept of -3dBm at the input. The gain is stabilized by on-chip compensation to vary less than +-0.2dB over -40 to +85Cel temperature range. The wide-dynamic-range mixer has an 9dB noise figure and IP3 of -6dBm at the input at 900MHz. An external LO can be used in place of the internal VCO for improved mixer input IP3 and a 3mA reduction in current. The chip incorporates a through-mode option so the RF amplifier can be disabled and replaced by an attenuator (S21= -7.5dB). This is useful for improving the overall dynamic range of the receiver when in an overload situation. The nominal current drawn from a single 3V supply is 10.4mA and 7.2mA in the thru-mode. Additionally, the VCO and Mixer can be powered down to further reduce the supply current to 1.2mA.
Features
- Low current consumption: 10.4mA nominal, 7.2mA with thru-mode activated
- Outstanding noise figure: 1.6dB for the amplifier and 9dB for the mixer at 900MHz
- Excellent gain stability versus temperature and supply voltage
- Switchable overload capability
- Independent LNA, mixer and VCO power down capability
- Internal VCO automatic leveling loop
- Monotonic VCO frequency vs control voltage
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| SA620DK | SA620DK | 9351 437 30112 | Volume production | SOT266-1
(SSOP20) | Tube | Standard Marking | SA620DK
| week 12, 2005 |
| SA620DK | SA620DK-T | 9351 437 30118 | Volume production | SOT266-1
(SSOP20) | Reel Pack, SMD, 13" | Standard Marking | SA620DK
| week 12, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| SA620DK | 9351 437 30112 | 2.2200 | not available | |||||
| SA620DK | 9351 437 30118 | 2.2200 | NA | DIGI-KEY CORPORATION | 2,500 | 8/28/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 2,178 | 8/28/2008 | Buy online |
Applications
- 900MHz cellular front-end
- 900MHz cordless front-end
- Spread spectrum receivers
- RF data links
- UHF frequency conversion
- Portable radio
Technical documents
Application Notes
Support Documents
75015145;
Specialty Analog Audio Amplifiers (2005-07-01)
Parametrics/similar products
| Type number | Package | Application | FUNCTION | Operating temp.(Cel) | Voltage | No. of Pins | Current | Power |
|---|---|---|---|---|---|---|---|---|
| SA620DK | SOT266-1
(SSOP20) | Wireless | Amplifiers | -40~85 | Low | 20 | Low | Low |
Similar products
SA620 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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