AS3990 AS3991 AS3992芯片技术参数对比表

The AS3992 UHF Gen 2 Reader chip

The AS3992 UHF Gen 2 Reader chip is an integrated analog front-end and provides protocol handling for ISO18000-6b/c 900MHz RFID reader systems. Equipped with multiple built-in programming options, the device is suitable for a wide range of UHF RFID applications.

The AS3992 is pin to pin compatible with the previous AS3990/91 IC’s. It offers improved receive sensitivity to -86dB, fully programmable Rx DRM filters on chip and pre-distortion. Fully scalable, the AS3992 is ideal for longer range and higher power applications.

Offering DRM compliance on chip, combined with improved sensitivity and pre-distortion allows the AS3992 to be the only true world wide shippable IC. The reader configuration is achieved through setting control registers allowing fine tuning of different reader parameters.

The AS3990/91 UHF reader chip

The AS3990/91 UHF reader chip is an integrated analog front-end and data framing system for a 900MHz RFIDreader system. Built-in programming options make it suitable for a wide range of applications in UHF RFID systems. Designed to simplify the design and implementation of an EPC Class1 Gen2 reader, this IC requires only a standard 8-Bit microcontroller with minimal other components.

The AS3990/91 comprises the EPC Class1 Gen 2 protocol (ISO 18000-6c) with digital high speed logic up to the framing level and supports the ISO 18000-6a and ISO 18000-6b Protocol with direct data mode. The Interface to the microcontroller can be either a 4-pin serial data Interface (SDI) or alternatively in case of high data rates are necessary an 8-Bit parallel. The frame management will be done using a 12 Byte FIFO in order to decrease processor workload and ensure a smooth data stream and correct protocol handling. All low level transmission codecs and CRC generation is done internally.

 

Comparison of austriamicrosystems RFID Reader IC Family

 

AMS AS3992

AMS AS3990/1

Rx Sensitivity

-86dBm

-66 dBm

Rx sensitivity with +5dBm from antenna reflection

-73 dBm

-65 dBm

Current consumption

85 mA

85 mA

Register count @16 Bit

Register count @ 8 Bit

32

32

SPI speed

2 Mbps

2 Mbps

Fully compliant with USB Power Supply

Yes

Yes

Internal LDO for supply noise rejection

YES

YES

Link frequency support

40,80,160,250,320, 640 on chip

40,80,160,250,320, 640 on chip

Self Jammer measurement and gain optimization

YES

YES

Input linearity high gain/ low gain setting

+11,5/ +18dBm

+11,5/ +18dBm

Filter setup

Internal analog Filter – 50 dBc @ co channel

Internal analog Filter; -6 dBc @ co-channel

Dynamic filtering

Yes

Yes

LBT Rx Sensitivity

-86dBm

-66 dBm

Carrier Cancellation Technology

NO

NO

Tx Phase Noise at 200Khz offset

-122dBc/Hz

-122dBc/Hz

Transmit pre-distortion

Yes

NO

Advanced receiver architecture:

Low power radio architecture

Low power radio architecture

Coherent IQ demodulation

Yes

Yes

Advance DSP

No

No

Software / Firmware

C-code based on 8051

C-code based on 8051

Radio control, Reader configuration and host libraries on Win CE, XP or Linux

Yes – Sample code based on open platform QT for GUI

Yes – Sample code based on open platform QT for GUI

Price (1K)

$ 41.41

AS3990: $ 33.64
AS3991: $ 36.89

Download the Data Sheet AS3992:

AS3990:
AS3991:

For more information, visit austriamicrosystems.com.

 

UHF RFID专属会员均可下载。

基于ElecKits AS3992 UHF RFID超高频读写模块。

配套902-928MHz 8dBi UHF RFID板状天线,超远距离5米以上,右旋圆极化天线
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