TH7301 datasheet(7/14 Pages) MELEXIS

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TH7301 Dual-Channel Programmable Low-Pass Filter

Operating

Characteristics

(continued)

Test levels (DC and AC Characteristics)

level 1: production tested at 25° C and over full power supply range

level 2: production tested at 25° C and VEE = -5.0 V

level 3: guaranteed by design and characterization test over full temperature and power supply range

level 4: typical value only, not confirmed by test

level 5: guaranteed by design and characterization at 25 °C and VEE = -5.0 V

Parameter

Symbol

Test level

Min.

Typ.

Max.

Unit

Conditions

Passband

Group Delay Ripple

pass

10 Hz

≤ f ≤ 0.5f

see note 2, 3 and figure 8

Initial Gain Accuracy

vacc

-2.5

3.0

see note 4 and figures 9

and 10

Gain Step Accuracy

(monotonicity guaranteed)

vmon

- 1.0

1.0

Output

Signal-to-Noise Ratio

SNR

see note 5

Crosstalk between

Channels

Xtalk

see note 6, 7

Gain Match between

Channels

vmatch

- 0.8

0.8

Bandwidth Match between

Channels

cmatch

-10

-5

cset ≤ 6.375 MHz

cset ≥ 6.4 MHz

Passband Group Delay

Match between Channels

passm

-3

10 Hz

≤ f ≤ 0.5f

Total Harmonic Distortion

THD

1.0

2.5

see note 8

Power Supply Rejection

PSR

see note 9

Intermodulation Distortion

IMD

- 48

- 37

dBc

see note 10

Output Voltage

1.0

VPP

see note 11

Input Resistance

3.0

Ω

Input Capacitance

Load Resistance

Ω

see note 12

Load Capacitance

Notes

10.

11.

12.

Logic threshold levels for inputs SCLK, SDATA and SDEN. Note that this is a negative-supply device

(VEE,VSS = -5 V, VCC, VDD = 0 V). It can be also used for positive-supply systems if the input

signals are referred to VCC, VDD = +5 V and VEE,VSS = 0 V.

cset = 10 MHz, Av = 10 dB

passband group delay ripple for an ideal 4 pole Butterworth under the same conditions is 6ns

measured at 0.25fc

o = 1 VPP, measured within the filter's noise bandwidth, fcset = 10 MHz, Av = 10 dB, fin < fc

o = 1 VPP, for XtalkIQ I driven Q measured, XtalkQI Q driven I measured, fcset = 22.4 MHz,

v = 20.5 dB,

in = 5 MHz

in = 0.25fc; Vo = 1 VPP; Cld = 15 pF, Av = 10 dB

100mVPP from 10 Hz to 1 MHz on VEE,VSS referred to the output.

cset = 10 MHz, Av = 10 dB; tones at f1= 15 MHz and f2 = 25 MHz with 300 mVPP each

ld = 1 kΩ, for linear gain and not to exceed Xtalk, THD and IMD

AC coupled or DC coupled to VEE, VSS

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