參數(shù)資料
型號(hào)： TLV5580PW
廠商： Texas Instruments, Inc.
英文描述： 8-BIT, 80 MSPS LOW-POWER A/D CONVERTER
中文描述： 8位，80 MSPS的低功耗A / D轉(zhuǎn)換器
文件頁(yè)數(shù)： 20/34頁(yè)
文件大?。?/td> 531K
代理商： TLV5580PW
TLV5580
8-BIT, 80 MSPS LOW-POWER A/D CONVERTER
SLAS205A – DECEMBER 1998 – REVISED JANUARY 1999
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TLV5580 EVALUATION MODULE
TLV5580 EVM settings
clock input settings
REFERENCE
DESIGNATOR
FUNCTION
W1
Clock selection switch
1–2 J11: clock from pin1 on J11 connector
2–3 J9: clock from J9 SMA connector
W2
Clock source switch
XTL: clock from onboard crystal oscillator
CLK: clock from pin 1 on J11 connector (if W1/1–2) or J9 SMA connector (if W1/2–3)
NOTE: If set to XTL and a XTL oscillator is populated, no clock signal should be applied to J9 or J11, depending on the W1
setting.
W3
Clock output switch
1–2 Rising: clock output on J11 connector is the same phase as the clock to the digital output buffer. Data changes on rising
CLK edge.
2–3 Falling: clock output on J11 connector is the opposite phase as the digital output buffer. Data changes on falling CLK edge.
reference settings
REFERENCE
DESIGNATOR
FUNCTION
SW1
REFT external/internal switch
REFT internal: REFT from TLV5580 internal reference
REFT external: REFT from onboard voltage reference circuit
SW2
REFB external/internal switch
REFB internal: REFB from TLV5580 internal reference
REFB external: REFB from onboard voltage reference circuit
control settings
REFERENCE
DESIGNATOR
FUNCTION
W4
TLV5580 and digital output buffer output enable control (1)
5580-574 OE-connected: Connects OEs of TLV5580 and digital output buffer (574 buffer). Use this when no
board-external OE is used. In addition, close W5 to have both OEs permanently enabled.
5580-574 OE-disconnected: Disconnects OEs of TLV5580 and digital output buffer (574 buffer). The OE for the output
buffer needs to be pulled low from pin 5 on J11 connector to enable. The OE for TLV5580 is independently controlled from
pin 7 on J11 connector (W5 open) or is permanently enabled if W5 is closed.
W5
TLV5580 and digital output buffer output enable control (2)
5580 OE to GND: Connects OEs of TLV5580 to GND. Additionally connects OE of 74ALS574 to GND if W4 is 5580-574
OE-connected.
5580 OE external: Enables control of OE of TLV5580 via pin 7 on J11 connector. When taken high (internal pulldown)
the output can be disabled.
W6
TLV5580 STDBY control
Stdby: STDBY is active (high).
Active: STDBY is low, via internal pulldown. STDBY can be taken high from pin 9 on J11 connector to enable standby
mode.
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