LTC1562AIG datasheet(3/28 Pages) LINER

Part #	LTC1562AIG

Description	Very Low Noise, Low Distortion Active RC Quad Universal Filter

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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3

LTC1562

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Q Error

VS = ±2.375V, LP Output Has RL = 5k, CL = 30pF

+ 3

%

Wideband Output Noise,

VS = ±2.375V, BW = 200kHz, Input AC GND

24

µVRMS

Lowpass Response (V2 Output)

VS = ±5V, BW = 200kHz, Input AC GND

24

µVRMS

Input-Referred Noise, Gain = 100

BW = 200kHz, fO = 100kHz, Q = 1, Input AC GND

4.5

µVRMS

THD

Total Harmonic Distortion,

fIN = 20kHz, 2.8VP-P, V1 and V2 Outputs Have

– 96

dB

Lowpass Response (V2 Output)

RL = 5k, CL = 30pF

fIN = 100kHz, 2.8VP-P, V1 and V2 Outputs Have

– 78

dB

RL = 5k, CL = 30pF

Shutdown Supply Current

SHDN Pin to V+

1.5

15

µA

SHDN Pin to V+, VS = ±2.375V

1.0

µA

Shutdown-Input Logic Threshold

2.5

V

Shutdown-Input Bias Current

SHDN Pin to 0V

– 10

– 20

µA

Shutdown Delay

SHDN Pin Steps from 0V to V +

20

µs

Shutdown Recovery Delay

SHDN Pin Steps from V + to 0V

100

µs

Inverting Input Bias Current, Each Biquad

5

pA

ELECTRICAL CHARACTERISTICS VS = ±5V, outputs unloaded, TA = 25°C, SHDN pin to logic “low”,

unless otherwise noted. AC specs are for a single 2nd order section, RIN = R2 = RQ =10k ±0.1%, fO = 100kHz, unless noted.

The q denotes specifications that apply over the full operating

temperature range.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: fO change from ±5V to ±2.375 supplies is – 0.15% typical,

fO temperature coefficient, – 40°C to 85°C, is 25ppm/°C typical.

TYPICAL PERFOR A CE CHARACTERISTICS

NOMINAL fO (kHz)

50

35

30

25

20

15

10

5

0

–5

130

1562 G03

70

90

110

150

120

60

80

100

140

TA = 70°C

TA = 25°C

RIN = RQ

Q = 10

Q = 5

Q = 2.5

Q = 1

Q Error vs Nominal fO (VS = ±5V)

NOMINAL fO (kHz)

50

0

0.50

1.00

0.75

1.50

1.25

130

1562 G01

– 0.50

–1.00

– 0.25

0.25

– 0.75

–1.25

–1.50

70

90

110

150

120

60

80

100

140

Q = 5

Q = 2.5

Q = 1

fO Error vs Nominal fO (VS = ±5V)

NOMINAL fO (kHz)

50

0

0.50

1.00

0.75

1.50

1.25

130

1562 G02

– 0.50

–1.00

– 0.25

0.25

– 0.75

–1.25

–1.50

70

90

110

150

120

60

80

100

140

Q = 5

Q = 2.5

Q = 1

fO Error vs Nominal fO (VS = ±2.5V)

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