TS3431CIZ

P1-P3 P4-P6 P7-P9 P10-P11

TS3431 Electrical Characteristics

4/11

Figure 1. Reference voltage vs. temperature

Figure 2. Cathode voltage vs cathode current

Figure 3. Reference input current vs

temperature

-40 0 40 80 120

1.230

1.235

1.240

1.245

1.250

I

K

= 10mA

V

K

= V

REF

Voltage Reference (V)

Temperature (°C)

0.0 0.1 0.2 0.3 0.4

0.0

0.5

1.0

1.5

T=+125°C

T=+25°C

T=-40°C

Cathode voltage V

K

(V)

Cathode current I

K

(mA)

-40 0 40 80 120

0.00

0.25

0.50

0.75

1.00

Reference current I

REF

(µA)

Temperature (°C)

Figure 4. Test circuit for V

K

= Vref

Figure 5. Minimum operating current vs

temperature

Figure 6. Dynamic impedance vs frequency

Input

Vka

Vref

Ik

Output

-40 0 40 80 120

0.0

0.1

0.2

0.3

0.4

0.5

V

K

= V

REF

Minimum operating current I

KMIN

(mA)

Temperature (°C)

10 100 1000 10000

0.0

0.1

0.2

0.3

0.4

0.5

V

K

= V

REF

T=+25°C

Dynamic impedance Z

KA

(

Ω

)

Frequency (Hz)

Electrical Characteristics TS3431

5/11

Figure 7. Off-State current vs temperature

Figure 8. Ratio of change in reference input

voltage to change in Vka voltage vs

temperature

Figure 9. Phase and gain vs frequency

-40 0 40 80 120

0

100

200

300

OFF State Current I

OFF

(nA)

Temperature (°C)

-40 0 40 80 120

0.0

0.5

1.0

1.5

2.0

∆V

K

= 1.24 to 24V

I

K

= 10 mA

∆

V

REF

/

∆

V

K

(mV/V)

Temperature (°C)

1000 10000 100000 1000000

0

20

40

0

40

80

T = +25°C

Gain (dB)

Frequency (Hz)

Phase (°)

Figure 10. Test circuit for off-state current

measurement

Figure 11. Test circuit for V

K

> V

REF

Figure 12. Test circuit for phase and gain

measurement

Vka=24V

Ioff

Input

Ik

Vka = Vref . (1+R1/R2) + Iref . R1

Vka

R1

R2

Iref

Vref

I

K

=10mA

Output

4.3 K Ω

Intput

6.8 K Ω

10 µF

10 µF

TS3431 Electrical Characteristics

6/11

Figure 13. Pulse response at Ik=1mA

Figure 14. Pulse response at Ik = 10mA

Figure 15. Block diagram

02468

0.0

2.5

5.0

. . .

. . .

T=+25°C

Output voltage

Input Voltage

Voltage (V)

Time (µs)

02468

0.0

2.5

5.0

T=+25°C

Output voltage

Input Voltage

. . .

. . .

Voltage (V)

Time (µs)

VREF

Anode

Cathode

Reference

+

-

Figure 16. Test circuit for pulse response at Ik

= 1mA

Figure 17. Test circuit for pulse response at Ik

= 10mA

Figure 18. Equivalent input noise vs

frequency

IK=1mA

Output

2.7K Ω

Intput

0

4V

IK=10mA

Output

270 Ω

Intput

0

4V

0.1 1 10 100 1000 10000

0

100

200

300

V

K

= V

REF

I

K

= 10 mA

T = +25°C

Noise (nV /

√

Hz)

Frequency (kHz)

P1-P3 P4-P6 P7-P9 P10-P11

TS3431CIZ

Mfr. #:

Manufacturer:

STMicroelectronics

Description:

IC VREF SHUNT ADJ SOT23-3

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet