DNXA-125

802.11n b/g wifi 1x1 PCIe half-size mini card, HB125/AR9485

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DNXA-125 is a 802.11n b/g 1T1R in the smallest PCIe half-size form factor using AR9485 single-chip solution features Atheros Align™ technology which leverages the 802.11n 1–stream specification to provide the optimal upgrade path from legacy 802.11 solutions. The single-stream feature enables a new class of WiFi devices that deliver performance enhancements over the existing 802.11g technology at comparable price points. DNXA-125 is forward compatible to higher-performance, multi-stream and MIMO–based 802.11n to serve the networking, PC and consumer electronics markets with optimal balance of performance and price. The enhanced throughput of DNXA-125 1–stream solution improves network efficiency by occupying the wireless channel for shorter periods than slower 802.11g devices – reducing congestion and increasing capacity for additional wireless devices. DNXA-125 employs all the mandatory and select optional features of the 11n specification, and Unex’s advanced radio design techniques to effectively double the wireless coverage over legacy WLAN.

  • The smallest PCIe form factor in 1Tx/1Rx design is ideal for embedding into ultra-compact devices or embedding additional mini cards with complimentary technologies at comparable price points.
  • Windows 2000/XP/Vista/7 driver enables manufacturers to quickly and easily bring new bandwidth intensive applications to market with trouble-free WiFi integration.
  • Supported on ath9k and FreeBSD providing Linux kernel driver for industrial, academic, or personal projects at highest flexibility and lowest cost.
  • Backward compatible to 802.11g and forward compatible to 802.11n provide the optimal upgrade path from legacy 802.11g solutions. 
  • Up to 150Mbps PHY rate capability reduces congestion and increases capacity for additional wireless devices.
  • Advanced radio design techniques effectively double the wireless coverage over legacy WLAN.
  • Two Hirose U.FL antenna connectors and supports receive diversity.
  • RoHS compliance meets environment-friendly requirement.

Pin No. Name Direction Descriptions
4,9,15,18,21,26,27,29,34,35,43,50 GND --- Ground.
24 RESERVED --- Reserved for 3.3VAUX.
37,45,47,51 RESERVED --- No connection.
49 RESERVED --- Reserved for GPIO8
39,41 RESERVED --- Reserved for 3.3V.
5 RESERVED --- Reserved for GPIO5
3 RESERVED I/O Reserved for GPIO4
8,10,12,14,16,17,19 NC --- No connection.
33 PETP0 Analog input signal Differential receive
31 PETN0 Analog input signal Differential receive
25 PERP0 Analog output signal Differential trnasmit
23 PERN0 Analog output signal Differential trnasmit
13 REFCLK+ Analog input signal Differential reference clock (100MHz).
11 REFCLK- Analog input signal Differential reference clock (100MHz).
20 WLAN_DISABLE_L I/O WLAN DISABLE
7 CLKREQ_L A digital output signal with open drain Reference clock request, open drain
22 PERST_L Input siganls with weak internal pull-down, to prevent siganls from floating when left open PCI Express reset with weak pull down
1 WAKE_L A digital output signal with open drain Reserved for 3.3V or WAKE2_L (Request to service a fuction-initiated wake event, open drain).
32 SMB_DATA --- No connection.
30 SMB_CLK --- No connection.
46 LED_WPAN_L --- No connection.
44 LED_WLAN_L O GPIO6
42 LED_WWAN_L --- No connection.
38 USB_D+ I/O No connection.
36 USB_D- I/O No connection.
6,28,48 1.5V --- No connection.
2,52 1.5V --- 3.3V
24 3.3VAUX --- 3.3V
Block Diagram: 
Packing: 
Main Chipset Atheros® AR9485
Tx/Rx 1T1R, Rx diversity
Standard Conformance 802.11b, 802.11g, and 802.11n
Frequency Range
  • USA: 2.400 ~ 2.483GHz 
  • Europe: 2.400 ~ 2.483GHz
  • Japan: 2.400 ~ 2.497GHz
  • China: 2.400 ~ 2.483GHz
Interface PCI Express ® mini-card rev. 1.2
Channel Spacing 5MHz
Operating Channels
  • USA/Canada: 11 (1~11)
  • Major Europe Countries: 13 (1~13)
  • France: 4 (10~13)
  • Japan: 14 on 802.11b (1~13 or 14th), 13 on 802.11g (1~13)
  • China: 13 (1~13)
Data Rate
  • 802.11b: 1, 2, 5.5 and 11Mbps
  • 802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps
  • 802.11n:
    • 20MHz channel: 1Nss: 65Mbps @ 800GI, 72.2Mbps @ 400GI (Max.)
    • 40MHz channel: 1Nss: 135Mbps @ 800GI, 150Mbps @ 400GI (Max.)
Power Consumption
  Typical (mA)
Cont. Rx 180
Cont. Tx 270
Idle (associated) 11
Idle (unassociated) 6
Radio Off 6
Driver Disabled 6
Transmit Power Settings Tolerance +1.5/-2dB
  • 802.11b: +17dBm
  • 802.11g: 
    • +18dBm @ 6, 9, 12, 18, 24Mbps
    • +16dBm @ 36Mbps
    • +15dBm @ 48Mbps
    • +13dBm @ 54Mbps
  • 802.11n:
    • 2.4GHz/HT20:
      • +16dBm @ MCS 0 ~ 4
      • +15dBm @ MCS 5
      • +13dBm @ MCS 6
      • +11dBm @ MCS 7
  • 802.11n:
    • 2.4GHz/HT40:
      • +16dBm @ MCS 0 ~ 4
      • +15dBm @ MCS 5
      • +13dBm @ MCS 6
      • +11dBm @ MCS 7
Receiver Sensitivity
  Data Rate IEEE Spec. (dBm) Typical/Maximum(dBm)
802.11b DBPSK(1M) not specified -93/-90
DQPSK(5.5M) not specified -90/-88
CCK(11M) not specified -87/-85
802.11g BPSK(6M) -82 -90/-88
BPSK(9M) -81 -92/-87
QPSK(12M) -79 -91/-86
QPSK(18M) -77 -88/-84
16-QAM(24M) -74 -85/-81
16-QAM(36M) -70 -81/-77
64-QAM(48M) -66 -78/-73
64-QAM(54M) -65 -77/-72
802.11b/g/n HT20 BPSK(MCS0) -82 -90/-87
QPSK(MCS1) -79 -89/-84
QPSK(MCS2) -77 -87/-82
16-QAM(MCS3) -74 -84/-79
16-QAM(MCS4) -70 -80/-75
64-QAM(MCS5) -66 -76/-71
64-QAM(MCS6) -65 -75/-70
64-QAM(MCS7) -64 -74/-69
802.11b/g/n HT40 PBSK(MCS0) -79 -89/-84
QPSK(MCS1) -76 -86/-81
QPSK(MCS2) -74 -84/-79
16-QAM(MCS3) -71 -81/-76
16-QAM(MCS4) -67 -77/-72
64-QAM(MCS5) -63 -75/-68
64-QAM(MCS6) -62 -72/-67
64-QAM(MCS7) -61 -71/-66
Operation Distance
  • 802.11b:
    • Outdoor: 100m @ 11Mbps, 200m @ 1Mbps
    • Indoor: 50m @ 11Mbps, 100m @ 1Mbps
  • 802.11g:
    • Outdoor: 100m @ 54Mbps, 200m @ 6Mbps
    • Indoor: 50m @ 54Mbps, 100m @ 6Mbps
  • 802.11n:
    • Outdoor: 30m @ MCS7/40Mhz, 50m @ MCS7/20MHz, 200m @ MCS0/20MHz
    • Indoor: 30m @ MCS7/40Mhz, 50m @ MCS7/20MHz, 800m @ MCS0/20MHz
MAC Protocol CSMA/CA with ACK architecture 32-bit MAC
Modulation Technique
  • DSSS with CCK, DQPSK, DBPSK
  • OFDM with BPSK, QPSK, 16QAM, 64QAM
Operation Voltage 3.3V ±5%
Security
  • 64-bit, 128-bit and 152-bit WEP encryption
  • 802.1x authentication
  • AES-CCM & TKIP
Operation Systems Supported

ath9k, FreeBSD, Windows XP, Windows Vista, Windows 7

Dimension 26.65 x 29.85 mm (± 0.15mm) x 1.0 mm (± 0.10mm)
Operation Temperature Range 0ºC ~ +60ºC
Storage Temperature Range -20ºC ~ +80ºC
Operating Humidity 15% ~ 95%, non-condensing
Storage Humidity max. 95%, non-condensing
Environment-Friendly Compliance RoHS
Antenna two Hirose U.FL ultra-miniature coaxial antenna connectors
Remark: please make sure to install two antennas on these two antenna ports to ensure designed performance.