ADATE320 datasheet(11/83 Pages) AD

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ADATE320

Data Sheet

Rev. B | Page 10 of 82

DIFFERENTIAL MODE COMPARATOR (DMC) SPECIFICATIONS

Table 5.

Parameter

Min

Typ

Max

Unit

Test

Level

Test Conditions/Comments

DC SPECIFICATIONS

VOHx tests at VOLx = −1.5 V, VOLx tests at VOHx = 1.5 V

Input Voltage Range

−1.5

+4.5

Functional Differential Range

±0.05

±1.1

Maximum Differential Input

±6.0

Input Offset Voltage

−250

+250

Offset interpolated from measurements at DAC Code 0x2666

(−1.0 V) and DAC Code 0x5999 (1.0 V), with VCM = 0.0 V

Input Offset Voltage TC

±150

µV/°C

Gain

1.0

1.1

V/V

Gain derived from measurements at DAC Code 0x2666

(−1.0 V) and DAC Code 0x5999 (1.0 V); based on an ideal

DAC transfer function (see Table 24)

Gain TC

±40

ppm/°C

VOHx, VOLx Resolution

153

µV

VOHx, VOLx DNL

±250

µV

After two-point gain/offset calibration; VCM = 0.0 V;

calibration points at DAC Code 0x2666 (−1.0 V) and

DAC Code 0x5999 (1.0 V)

VOHx, VOLx INL

−8

After two-point gain/offset calibration; VCM = 0.0 V;

calibration points DAC Code 0x2666 (−1.0 V) and

DAC Code 0x5999 (1.0 V), measured over VOHx/VOLx

range of −1.1 V to +1.1 V

Uncertainty Band

VDUTx = 0.0 V, sweep comparator threshold to determine

the uncertainty band

Programmable Hysteresis

200

Hysteresis Resolution

Bits

Common-Mode Rejection Ratio

(CMRR)

−1.0

+1.0

mV/V

∆Offset measured at VCM = −1.5 V and +4.5 V, VDM = 0.0 V

DC PSR

±5

mV/V

∆Offset measured at VCM = 0.0 V, VDM = calibration points

DAC Code 0x2666 (−1.0 V) and DAC Code 0x5999 (1.0 V)

AC SPECIFICATIONS

All ac tests are performed after dc levels calibration; input

transition time = 50 ps 20% to 80%; outputs terminated

50 Ω to VTTCx, comparator CLC set to ¼ scale (010)

Propagation Delay

580

VDUT0 = 0.0 V, VDUT1 = −0.5 V to +0.5 V swing, drive

termination mode, VIT = 0.0 V, comparator threshold =

0.0 V, repeat with VDUTx inputs reversed

Propagation Delay TC

ps/°C

VDUT0 = 0.0 V, VDUT1 = −0.5 V to +0.5 V swing, drive

termination mode, VIT = 0.0 V, comparator threshold =

0.0 V, repeat with VDUTx inputs reversed

Propagation Delay Matching

High Transition to Low

Transition

VDUT0 = 0.0 V, VDUT1 = −0.5 V to +0.5 V swing, drive

termination mode, VIT = 0.0 V, comparator threshold =

0.0 V, repeat with VDUTx inputs reversed

Propagation Delay Matching

High to Low Comparator

VDUT0 = 0.0 V, VDUT1 = −0.5 V to +0.5 V swing, drive

termination mode, VIT = 0.0 V, comparator threshold =

0.0 V, repeat with VDUTx inputs reversed

Propagation Delay Dispersion

VDUT0 = 0.0 V, VIT = 0.0 V, drive termination mode, repeat

with VDUTx inputs reversed

Slew Rate: 400 ps vs. 1 ns

(20% to 80%)

VDUT1 = −0.5 V to +0.5 V swing, comparator threshold = 0.0 V

Overdrive: 250 mV vs. 750 mV

For 250 mV: VDUT1 = 0.0 V to 0.5 V swing; for 750 mV: VDUT1 =

0.0 V to 1.0 V swing, comparator threshold = −0.25 V,

repeat with VDUTx inputs reversed with comparator

threshold = +0.25 V

1.0 V Pulse Width: 0.7 ns,

1.0 ns, 5.0 ns, 10 ns

VDUT1 = −0.5 V to +0.5 V swing, 32 MHz, comparator

threshold = 0.0 V

0.5 V Pulse Width: 0.6 ns,

1.0 ns, 5.0 ns, 10 ns

VDUT1 = −0.25 V to +0.25 V swing, 32 MHz, comparator

threshold = 0.0 V

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