ISL71590SEH Datasheet, PDF (7/16 Pages) Intersil Corporation – Radiation Hardened

ISL71590SEH
Typical Performance Curves Unless otherwise specified, V_S = 5V, T_A = +25°C. (Continued)
V_s
0V
V_OUT = I_OUT *R (1kΩ)
V_s
0V
V_OUT = I_OUT *R (1kΩ)
FIGURE 16. V_S RAMP = 3.7V/ms, I_OUT TURN-ON
FIGURE 17. V_S RAMP = 5V/µs, I_OUT TURN-ON
V_s
0V
V_OUT = I_OUT *R (1kΩ)
FIGURE 18. V_S RAMP = 50V/µs, I_OUT TURN-ON
0.60
0.40
0.20
0.00
-0.20
-0.40
-0.60
-0.80
-1.00
0
50k
100k
150k
200
TOTAL DOSE (krad(Si))
50k
300k
FIGURE 19. TYPICAL ABSOLUTE I_OUT ERROR vs TOTAL IONIZING
DOSE FOR HIGH DOSE RATE
Functional Description
Functional Overview
The ISL71590SEH is an integrated-circuit temperature-to-current
transducer, which produces an output current proportional to
absolute temperature. The device acts as a high impedance
constant current regulator passing 1µA/K for supply voltages
(V+ to V-) from +4V to +33V.
The ISL71590SEH is manufactured in Intersil’s PR40,
silicon-on-insulator process, which makes this device immune to
single event latch-up and provides excellent radiation tolerance.
This makes it the ideal choice for high reliability applications in
harsh radiation prone environments.
Submit Document Feedback
7
The ISL71590SEH is specified over temperatures of -55°C to
+125°C without the need for additional circuitry to produce an
output within ±1.7°C accuracy. With power requirements as low
as 1.5mW (5V at +25°C), it is an ideal choice for remote sensing
as any length of a well-insulated twisted pair cable will allow for
proper operation. The high output impedance (>10MΩ) leaves
plenty of room for variations in the power supply voltage. It is
electrically durable since it can withstand a forward operating
voltage of 33V over the full temperature range with and without
ion beam radiation and a reverse voltage of -40V.
The ISL71590SEH should be used in any temperature sensing
application from -55°C to +150°C in which conventional
electrical temperature sensors are currently employed. The
ISL71590SEH provides a total temperature sensing solution that
is both low in complexity and small in size by eliminating the
June 3, 2016
FN8376.2