MAX9949/MAX9950
Dual Per-Pin Parametric Measurement Units
_______________________________________________________________________________________ 9
PIN
MAX9950 MAX9949
NAME FUNCTION
1, 16,
33, 48
1, 16,
33, 48
V
EE
Negative Analog Supply Input
2, 15,
34, 47
2, 15,
34, 47
V
CC
Positive Analog Supply Input
3 14 RBCOM
PMU-B Range-Setting-Resistor Common Connection. Connect to one end of all the range-
setting resistors (RB_) for PMU-B. Also serves as the input to an external current-range buffer
for PMU-B.
4 13 RBE PMU-B Range E Resistor Connection
5 12 RBD PMU-B Range D Resistor Connection
6 11 RBC PMU-B Range C Resistor Connection
7 10 RBB PMU-B Range B Resistor Connection
8 9 RBA PMU-B Range A Resistor Connection
9 8 FORCEB PMU-B Driver Output. Forces a current or voltage to the DUT for PMU-B.
10 7 SENSEB
PMU-B Sense Input. A Kelvin connection to the DUT. Provides the feedback signal in FVMI
mode and the measured signal in FIMV mode for PMU-B.
11 6 CC1B
PMU-B Compensation Capacitor Connection 1. Provides compensation for the PMU-B main
amplifier.
12 5 CC2B
PMU-B Compensation Capacitor Connection 2. Provides compensation for the PMU-B main
amplifier.
13 4 RXDB
PMU-B Current-Range Sense-Resistor Connection. Connects to the external current-range
sense resistor on the DUT side for PMU-B. See Figure 5.
14 3 RXAB
PMU-B Current-Range Sense-Resistor Connection. Connects to the external current-range
sense resistor on the amplifier side for PMU-B. See Figure 5.
17 64 CS Chip-Select Input. Force CS low to enable communication with the serial port.
18 63 LOAD
Serial Port Load Input. A logic low asynchronously loads data from the input registers into the
PMU registers.
19 62 SCLK Serial Clock Input
20 61 DIN Serial Data Input
21 60 DUTHB
PMU-B Window-Comparator High-Comparator Output. A sense-B voltage above the V
THMAXB
level forces the DUTHB output low. DUTHB is an open-drain output.
22 59 DUTLB
PMU-B Window-Comparator Low-Comparator Output. A sense-B voltage below the V
THMINB
level forces the DUTLB output low. DUTLB is an open-drain output.
23 58 EXTBSEL PMU-B External Current-Range Selector. Selects the external current range for PMU-B.
24, 27 54, 57 DGND Digital Ground
25 56 DOUT
Serial Data Output. Provides data out from the shift register. Facilitates daisy-chaining to DIN
of a downstream PMU.
26 55 V
L
Logic Supply Voltage Input. The voltage applied at VL
sets the upper logic-voltage level.
28 53 EXTASEL PMU-A External Current-Range Selector. Selects the external current range for PMU-A.
29 52 DUTLA
PMU-A Window-Comparator Low-Comparator Output. A sense-A voltage below the V
THMINA
level forces the DUTLA output low. DUTLA is an open-drain output.
