E8415A Datasheet, PDF (1/1 Pages) Semtech Corporation – 1GHz Dual Channel, Digitally Programmed Pin Electronics Solution

TEST AND MEASUREMENT PRODUCTS
Description
E8415A
1GHz Dual Channel, Digitally
Programmed Pin Electronics Solution
PRELIMINARY
Features
The E8415A has a Driver and Window Comparator receiver
and commutating Load Circuit for each channel. Also present
is a PMU per channel that also doubles as a resistive load
function to the DUT. Each PMU has a 16-bit ADC for analog
parametric measurements.
All level’s DACs for the Driver, Receiver, Load and PMU are
on-chip and are programmed via a high speed serial bus.
Each of the level’s DACs have offset and gain registers for
on-chip calibrations.
The Driver circuit is capable of forcing two levels to the DUT
(DVH and DVL) as well as a third voltage for a termination
level (DVT) to terminate high-speed DUT signals to the Com-
parator receivers into a high quality 50Ω load. The Driver
can also be configured to a high impedance (HiZ) state for
an open termination of DUT signals.
Waveform clamps are also available to clip the input signals
from a DUT when not using the Driver as a termination.
The clamps prevent reflections from returning to the DUT
transmission line which can create timing errors and false
triggering.
All of the on-chip DAC levels and configuration registers
for each channel may be programmed via SET commands.
This PinCast method of programming allows all channels in
a system to be programmed concurrently with a simple set
command whereby any pin channel that had been assigned
to that set will respond.
The two driver circuits may be placed into a differential drive
mode. This reduces driver-to-driver skews to levels difficult to
achieve by external deskewing. The two window comparators
may also be placed into a differential receive mode. These
features enable higher quality testing of differential signals
to/from the DUT.
• Two Fully Integrated Pin Channels including:
- 16-bit DACs for each level
- Tri-level Driver
- Window Receiver
- 4mA/40mA Ranged, Active Commutating Load
- Parametric Measurement Unit
- Thevinen Load
- Waveform Clamps
- 16-bit ADC for PMU measurements
• Driver, Comparator and PMU maximum 8V span over
-2 to +7V range
• Configurable Output Protection
• 4 PMU current ranges; 24mA, 2.4mA, 240μA, 24μA
• On-Chip ADC for each PMU
• 50MHz Serial Bus Programming
- SPI™/QSPI™/ MICROWIRE™
- Daisy-chainable
• Power Dissipation
~1.5W/Channel, quiescent (I/O mode)
• Pin and Software Compatible to E8400, E8410, E8405
• Differential Drive and Receive Functionality
• Optimal Small Swing Performance
• Small 11mm x 11mm Package
Functional Block Diagram
C
O
N
SERIAL IO
T
R
O
L
DEN
DHI
QA
QB
VFRC
IFRC
TESTH
TESTL
P^PM^MU^U
DVH
CLH
CLL
IVMON0
PMUF
PMUS
DVT
DVL
CVA
A
B
CVB
VCH
VCL
ISC
VCM
ISK
CH 0
DUTIO[0]
Applications
• Logic Testers
• Mixed-Signal Test Equipment
• Memory Testers
• Flash Memory Testers
• ASIC Verifiers
SPI and QSPI and trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
QB
QA
DHI
DEN
IVMON_HI
IVMON_LO
GND_SNS
CVB
CH 1
CVA
DVL
ISK
VCL ^VCM
VCH
ISC
A/D
IVMON 0
IVMON 1
A/D
DVH
TESTL
TESTH
IFRC
VFRC
PMU
DVT
PMUS
PMUF
IVMON1
CLL
CLH
DUTIO[1]
Revision 6, November 2, 2007

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