TLE2662

DUAL

µPOWER JFET-INPUT OPERATIONAL AMPLIFIER

WITH SWITCHED-CAPACITOR VOLTAGE CONVERTER

SLOS118B – DECEMBER 1992 – REVISED AUGUST 1994

8

POST OFFICE BOX 655303

SWITCHED-CAPACITOR SECTION

electrical characteristics over recommended supply voltage range and at specified free-air

temperature

PARAMETER

TEST CONDITIONS†

TA‡

MIN

TYP

MAX

UNIT

Regulated output voltage,

RL(SCOUT) = 500 Ω

SCIN = 7 V,

See Note 7

25

°C

– 5.2

–5

– 4.7

V

gg ,

SCOUT

RL(SCOUT) = 500 Ω

SCIN = 5 V,

See Note 8

25

°C

– 4.25

–4

– 3.75

V

Input regulation

RL(SCOUT) = 500 Ω

SCIN = 7 V to 12 V,

See Note 7

Full range

5

25

mV

Input regulation

RL(SCOUT) = 500 Ω

SCIN = 5 V to 15 V,

See Note 8

Full range

27

mV

Output regulation

RL(SCOUT) = 100 Ω to 500 Ω

SCIN = 7 V,

See Note 7

Full range

10

50

mV

Output regulation

RL(SCOUT) = 100 Ω to 500 Ω

SCIN = 5 V,

See Note 8

Full range

100

mV

Voltage loss, SCIN –

SCOUT

SCIN = 7 V,

IO = 10 mA

Full range

0.35

0.55

V

g,





(see Note 9)

,

CIN = COUT = 100-

µF tantalum

IO = 100 mA

Full range

1.1

1.6

V

Output resistance

SCIN = 7 V,

See Note 10

∆IO = 10 mA to 100 mA,

Full range

10

15

Ω

Oscillator frequency

Full range

15

25

35

kHz

SCIN=7V

I f =60 µA

25

°C

2.35

2.5

2.65

V

Reference voltage V f

SCIN = 7 V,

Iref = 60 µA

Full range

2.25

2.75

V

Reference voltage, Vref

SCIN=5V

I f =50 µA

25

°C

2.35

2.5

2.65

V

SCIN = 5 V,

Iref = 50 µA

Full range

2.25

2.75

V

Maximum switch current

25

°C

300

mA

Supply current IS

IO =0

SCIN = 3.5 V

Full range

2.5

3.5

mA

Supply current, IS

IO = 0

SCIN = 15 V

Full range

3

4.5

mA

Supply current in shutdown

V(FB/SD) = 0,

IO = 0,

SCIN = 5 V

Full range

100

150

µA

† Data applies for the switched-capacitor block only. Amplifier block is not connected.

‡ Full range is – 40

°C to 85°C.

NOTES:

7. All regulation specifications are for the switched-capacitor section connected as a positive to negative converter/regulator with

R1 = 20 k

Ω, R2 = 102.5 kΩ, CIN = 10 µF (tantalum), COUT = 100 µF (tantalum) and C1 = 0.002 µF (see Figure 63).

8. All regulation specifications are for the switched-capacitor section connected as a positive to negative converter/regulator with

R1 = 23.7 k

Ω, R2 = 102.2 kΩ, CIN = 10 µF (tantalum), COUT = 100 µF (tantalum) and C1 = 0.002 µF (see Figure 63).

9. For voltage-loss tests, the switched-capacitor section is connected as a voltage inverter, with SCREF, OSC, and FB/SD

unconnected. The voltage losses may be higher in other configurations.

10. Output resistance is defined as the slope of the curve (

∆VO vs ∆IO) for output currents of 10 mA to 100 mA. This represents the linear

portion of the curve. The incremental slope of the curve is higher at currents less than 10 mA due to the characteristics of the switch

transistors.