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Numéro de référence | IVC102U | ||
Description | PRECISION SWITCHED INTEGRATOR TRANSIMPEDANCE AMPLIFIER | ||
Fabricant | Burr-Brown Corporation | ||
Logo | |||
1 Page
® IVC102
PRECISION SWITCHED INTEGRATOR
TRANSIMPEDANCE AMPLIFIER
APPLICATIONS
q PRECISION LOW CURRENT MEASUREMENT
q PHOTODIODE MEASUREMENTS
q IONIZATION CHAMBER MEASUREMENTS
q CURRENT/CHARGE-OUTPUT SENSORS
q LEAKAGE CURRENT MEASUREMENT
FEATURES
q ON-CHIP INTEGRATING CAPACITORS
q GAIN PROGRAMMED BY TIMING
q LOW INPUT BIAS CURRENT: 750fA max
q LOW NOISE
q LOW SWITCH CHARGE INJECTION
q FAST PULSE INTEGRATION
q LOW NONLINEARITY: 0.005% typ
q 14-PIN DIP, SO-14 SURFACE MOUNT
DESCRIPTION
The IVC102 is a precision integrating amplifier with
FET op amp, integrating capacitors, and low leakage
FET switches. It integrates low-level input current for
a user-determined period, storing the resulting voltage
on the integrating capacitor. The output voltage can be
held for accurate measurement. The IVC102 provides
a precision, lower noise alternative to conventional
transimpedance op amp circuits that require a very
high value feedback resistor.
The IVC102 is ideal for amplifying low-level sensor
currents from photodiodes and ionization chambers.
The input signal current can be positive or negative.
TTL/CMOS-compatible timing inputs control the inte-
gration period, hold and reset functions to set the
effective transimpedance gain and to reset (discharge)
the integrator capacitor.
Package options include 14-Pin plastic DIP and SO-14
surface-mount packages. Both are specified for the
–40°C to 85°C industrial temperature range.
Ionization
Chamber
6 C3 60pF
VB
5 C2 30pF
4 C1 10pF
3
IIN 2
1
S1
S2
Photodiode
Analog
Ground
11 12
S1 S2
Logic Low closes switches
V+
14
10
VO
9
13 V–
Digital
Ground
∫V
O=
–1
CINT
IIN(t) dt
Positive or Negative
Signal Integration
0V
Hold Integrate Hold
S1
S2
Reset
InternationalAirportIndustrialPark • MailingAddress:POBox11400 • Tucson,AZ85734 • StreetAddress:6730S.TucsonBlvd. • Tucson,AZ 85706
Tel:(520)746-1111 • Twx:910-952-1111 • Cable:BBRCORP • Telex:066-6491 • FAX:(520)889-1510 • ImmediateProductInfo:(800)548-6132
© 1996 Burr-Brown Corporation
PDS-11329A
IVC102Printed in U.S.A. June, 1996
®
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Pages | Pages 10 | ||
Télécharger | [ IVC102U ] |
No | Description détaillée | Fabricant |
IVC102 | PRECISION SWITCHED INTEGRATOR TRANSIMPEDANCE AMPLIFIER | Burr-Brown Corporation |
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