EDGE7725 Datasheet, PDF (1/39 Pages) Semtech Corporation – 900 MHz Dual Pin Electronics Driver, Window Comparator, and Load

TEST AND MEASUREMENT PRODUCTS
Description
Edge7725
900 MHz Dual Pin Electronics Driver,
Window Comparator, and Load
Features
The Edge7725 dual channel, monolithic ATE pin electron-
ics solution is manufactured in a high-performance comple-
mentary bipolar process.
The Edge7725 operates greater than 900 MHz/1.8 Gbps.
The power supplies to the Edge7725 are specified over a
wide range to accommodate between –2V, +7V and –0.5V,
+4.2V input, output voltages.
The three-statable Edge7725 tri-level driver is capable of
generating 8V swings over a –2 to +7V range, with a mini-
mum swing of 100 mV. The driver’s third level is used when
the driver acts as a switched termination, and the load is
not being used. The differential driver mode permits the
inverse of DHI driving of Channel 0 to be output on Chan-
nel 1, creating differential outputs having a minimum of
skew. An input power down mode lowers the DOUT leak-
age current.
The Edge7725 window comparator can span a 9V com-
mon mode range. Programmable voltage clamps at the
input to the comparator provide a means to clamp voltage
overshoots and excessive ringing for unterminated com-
parator input signals. An input power down mode lowers
the VINP input leakage currents.
The Edge7725 differential comparator can compare input
differences of up to 800mV to input levels which are sepa-
rate from those of the window comparators.
The Edge7725 load supports programmable source and
sink currents of ±32 mA over a –2V to +7V range, or it can
be completely disabled. The load may be configured as a
“split load” whereby the load can act as a voltage clamp
as an alternate to the comparator’s clamp. For operating
modes requiring no load, the Edge7725’s load may be
depowered to conserve power.
• Fully Integrated Three-Statable, Tri-Level Driver,
Window Comparator, and Dynamic Active Load
• Wide Choice of Range, Performance vs. Power
• Differential Driver and Comparator Modes
• Programmable Driver Rise, Fall Times
• Programmable Voltage Clamps on Comparator Input
• –2V, +7V Driver, Compare, Load Range
• ±32 mA Programmable Load
• Comparator Input Tracking to >3V/ns
• Small, 128-Pin MQFP Package
Applications
• Logic Testers
• Mixed-Signal Test Equipment
• Memory Testers
• Flash Memory Testers
• ASIC Verifiers
Functional Block Diagram
VCM_IN
VCM_OUT
SNK
LEN
DEN
QA
QB
DHI
SEL_DHI
DHI
QB
QA
DEN
LEN
SNK
VCM_OUT
VCM_IN
ANODE
Channel 0
LE
SEL
DT
DH
SEL
SEL
SEL
DH
DT
SEL
LE
Channel 1
VCC
VEE
VEE
VCC
LOUT
RADJ
DOUT
FADJ
CVA
VCH
VINP
VCL
CVB
CVC[0]
CVC[1]
CVB
VCL
VINP
VCH
CVA
RADJ
DOUT
FADJ
LOUT
CATHODE
Revision 9 / August 22, 2006
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