ADATE304
Rev. 0 | Page 9 of 52
DIFFERENTIAL COMPARATOR
VOH tests done with VOL = 1.1 V, VOL tests done with VOH = +1.1 V, unless otherwise specified.
Table 5.
Parameter
Min
Typ
Max
Unit
Test
Level
Test Conditions/Comments
DC SPECIFICATIONS
Input Voltage Range
1.25
+4.5
V
D
Operational Differential Voltage
Range
±0.05
±1.1
V
D
Maximum Differential Voltage Range
±8
V
D
Comparator Input Offset Voltage
Accuracy, Uncalibrated
150
±35
+150
mV
P/CT
Offset measured at differential calibration points +1.0 V
and 1.0 V, with common mode = 0.0 V
VOH, VOL Resolution
0.6
1
mV
PF
After two-point gain/offset calibration; range/number of
DAC bits as measured at differential calibration points
+1.0 V and 1.0 V, with common mode = 0.0 V
VOH, VOL DNL
±1
mV
CT
After two-point gain/offset calibration; common
mode = 0.0 V
VOH, VOL INL
15
±2.0
+15
mV
P
After two-point gain/offset calibration; measured over VOH,
VOL range of 1.1 V to +1.1 V, common mode = 0.0 V
VOH, VOL Offset Voltage Tempco
±200
μV/°C
CT
Measured at calibration points
Comparator Uncertainty Range
18
mV
CB
VDUTx = 0 V, sweep comparator threshold to determine
uncertainty region
DC Hysteresis
0.5
mV
CB
VDUTx = 0 V
CMRR
0.15
1
mV/V
P
Offset measured at common-mode voltage points of
1.5 V and +4.5 V, with differential voltage = 0.0 V
DC PSRR
±1.5
mV/V
CT
Measured at calibration points
AC SPECIFICATIONS
Input transition time = 800 ps, 10% to 90%, measured
with each comparator leg terminated 50 Ω to GND
Propagation Delay, Input to Output
1.7
ns
CB
VDUT0 = 0 V, VDUT1 = 0.5 V to +0.5 V swing, Driver VTERM
mode, VT = 0.0 V; high-side measurement: VOH = 0.0 V,
VOL = 1.1 V; low-side measurement: VOH = +1.1 V,
VOL = 0.0 V; repeat for other DUT channel
Propagation Delay Tempco
5
ps/°C
CT
VDUT0 = 0 V, VDUT1 = 0.5 V to +0.5 V swing, Driver VTERM
mode, VT = 0.0 V; high-side measurement: VOH = 0.0 V,
VOL = 1.1 V; low-side measurement: VOH = +1.1 V,
VOL = 0.0 V; repeat for other DUT channel
Propagation Delay Matching
VDUT0 = 0 V, VDUT1 = 0.5 V to +0.5 V swing, Driver VTERM
mode, VT = 0.0 V; high-side measurement: VOH = 0.0 V,
VOL = 1.1 V; low-side measurement: VOH = +1.1 V,
VOL = 0.0 V; repeat for other DUT channel
High Transition to Low Transition
100
ps
CB
High-to-Low Comparator
50
ps
CB
Propagation Delay Change (with
Respect To)
VDUT0 = 0 V, VDUT1 = 0.5 V to +0.5 V swing, Driver VTERM
mode, VT = 0.0 V; high-side measurement: VOH = 0.0 V,
VOL = 1.1 V; low-side measurement: VOH = +1.1 V,
VOL = 0.0 V; repeat for other DUT channel
Slew Rate, 800 ps, 1 ns, 1.2 ns, and
2.2 ns (10% to 90%)
60
ps
CB
VDUT0 = 0 V, VDUT1 = 0.5 V to +0.5 V swing, Driver VTERM
mode, VT = 0.0 V; high-side measurement: VOH = 0.0 V,
VOL = 1.1 V; low-side measurement: VOH = +1.1 V,
VOL = 0.0 V; repeat for other DUT channel
Overdrive, 250 mV and 750 mV
100
ps
CB
VDUT0 = 0 V, for 250 mV: VDUT1 = 0 V to 0.5 V swing; for
750 mV: VDUT1 = 0 V to 1.0 V swing, Driver VTERM mode,
VT = 0.0 V; VOH = 0.25 V; repeat for other DUT channel
with comparator threshold = +0.25 V
Pulse Width, Sweep from 1.6 ns to
10 ns
75
ps
CB
VDUT0 = 0 V, VDUT1 = 0.5 V to +0.5 V swing @ 32 MHz, Driver
VTERM mode, VT = 0.0 V; high-side measurement: VOH =
0.0 V, VOL = 1.1 V; low-side measurement: VOH = +1.1 V,
VOL = 0.0 V; repeat for other DUT channel
Duty Cycle, 5% to 95%
60
ps
CB
VDUT0 = 0 V, VDUT1 = 0.5 V to +0.5 V swing @ 1 MHz, Driver
VTERM mode, VT = 0.0 V; high-side measurement: VOH =
0.0 V, VOL = 1.1 V; low-side measurement: VOH = +1.1 V,
VOL = 0.0 V; repeat for other DUT channel