參數(shù)資料
型號(hào)： SY58626L
廠商： Micrel Semiconductor,Inc.
英文描述： DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
中文描述： DC至到6.4Gbps背板發(fā)送緩沖器的可選輸出預(yù)加重的I / O DCOffset控制和200mV的，3.0VPP輸出擺幅
文件頁(yè)數(shù)： 4/18頁(yè)
文件大?。?/td> 830K
代理商： SY58626L
Micrel, Inc.
SY58626L
March 2006
4
M9999-030206-B
hbwhelp@micrel.com
or (408) 955-1690
Pin Description
Pin Number
Pin Name
Pin Function
4, 5
TXIN, /TXIN
Differential inputs: This input pair is the differential signal input to the device. They
accept AC- or DC-coupled signals as small as 100mV (200mV
PP
). Note that this
input will default to an undetermined state if left open. TXIN and /TXIN internally
terminate to the VTTIN
pin through 50
. Please refer to the “Input Interface
Applications” section for more details.
7
VTTIN
Input termination center-tap: TXIN and /TXIN terminate to VTTIN. The VTTIN pin
provides a center-tap to the internal termination network for maximum interface
flexibility and DC-offset capability. Please refer to the “Input Interface Applications”
section for more details.
8
VREF-AC
Reference voltage: This output biases to V
CC
-1.3V. It is used for AC-coupling the
input pair (TXIN, /TXIN). Connect VREF-AC directly to the VTTIN pin. Bypass with a
0.01uF low ESR capacitor to VCC. Maximum sink/source current is ±1.5mA. Due to
the limited drive capability, the VREF-AC pin is only intended to drive the VTTIN pin.
Please refer to the “Input Interface Applications” section for more details.
13
TXVCTRL
Analog input that controls TXQ output swing amplitude. The operating range of the
control input is from VREF-CTRL (max swing) to VCC (min swing). Control of the
output swing can be obtained by using a variable resistor between VREF-CTRL and
VCC with the wiper driving TXVCTRL. Output swing ranges from 100mV
PK
to
1.5V
PK
. When the TXQ output is selected for maximum swing amplitude of 1.5V
PK
,
no pre-emphasis is possible since the maximum swing cannot extend beyond
1.5V
PK
. For applications that only require a fixed, full CML swing, connect
TXVCTRL to VREF-FIXED.
12
VREF-CTRL
Reference control voltage for TXVCTRL swing control. The operating range of the
control input is from VREF-CTRL (max swing) to VCC (min swing). Control of the
output swing can be obtained by using a variable resistor between VREF-CTRL and
VCC with the wiper driving TXVCTRL. Maximum sink/source current is ±1.5mA.
14
VREF-FIXED
Reference output voltage: Connect this reference output pin directly to the
TXVCTRL input pin, and the TXQ output swing is fixed to 400mV
PK
(800mV
PP
).
TTL/CMOS (or VTH controlled) compatible control input for the TXQ Outputs pair.
When pulled HIGH, the TXQ Output pair is disabled. This input is internally
connected to a 25k
pull-down resistor and will default to a logic LOW state
(Enable) if left open. When disabled, the TXQ output goes LOW, and /TXQ goes
HIGH. Default threshold is Vcc/2 when VTH pin is floating.
24
/TXEN
29
/TXLBEN
TTL/CMOS (or VTH controlled) compatible control input for the TXLBQ output pair.
When pulled HIGH, the TXLBQ output pair is disabled. This input is internally
connected to a 25k
pull-down resistor and will default to a logic LOW state
(Enable) if left open. When disabled, the TXLBQ output goes LOW, and /TXLBQ
goes HIGH. Default threshold is Vcc/2 when VTH pin is floating.
1
LBSEL
Loopback MUX select control: The TTL/CMOS (or VTH controlled) compatible input
selects the input to the Loopback mode multiplexer. When LBSEL input is a logic
HIGH, the Loopback mode is selected, and the RXLBIN input pair is selected to
pass through the TXQ output. Note that the LBSEL pin is internally connected to a
25k
pull-down resistor and will default to a logic LOW state if left open (normal
operation). The loopback MUX includes internal input isolation to minimize
crosstalk.
30, 31
RXLBIN,
/RXLBIN
Loopback differential input pair: AC-coupled, CML compatible input. This input pair
includes internal termination connected to an internal VBB for an AC-coupled bias
configuration. The RXLBIN input pair receives a signal from the RX buffer
(SY58627L RXLBQ) loopback output. This input pair does not include any
equalization. When Loopback mode is selected, the signal at the RXLBIN input is
directed to the TXQ output.
相關(guān)PDF資料
PDF描述
SY58626LMH DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
SY58626LMHTR DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
SY58627L DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control
SY58627LMG DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control
SY58627LMGTR DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SY58626L_10 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Transmit Buffer with
SY58626LMH 功能描述:總線發(fā)射器 6.4Gbps Transmitter w/ Pre-emphasis (Green) RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:135 Mpps 接口: 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-56 封裝:Reel
SY58626LMH TR 功能描述:總線發(fā)射器 6.4Gbps Transmitter w/ Pre-emphasis (Green) RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:135 Mpps 接口: 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-56 封裝:Reel
SY58626LMHTR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
SY58627L 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Receive Buffer with Four Stage Programmable Equalization and DC-Offset Control
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