HIP9022AM datasheet(7/10 Pages) INTERSIL

7 / 10 page

4-7

Address, Timing and Waveforms

FIGURE 2. ADDRESS WITH SAMPLE, NULL, VIN AND DIAGONAL WAVEFORMS

TABLE 1. HIP9022 ADDRESS MAP

ADDRESS

NO.

FUNCTION

TYPE

FUNCTION NAME

0000

ANALOG

VIN(DL) Voltage for Constant Current Level, Laser Driver #1

0001

ANALOG

VIN(DL) Voltage for Constant Current Level, Laser Driver #2

0010

ANALOG

VLOWER Level, Laser Driver #1

0011

ANALOG

VLOWER Level, Laser Driver #2

0100

ANALOG

VUPPER Level, Laser Driver #1

0101

ANALOG

VUPPER Level, Laser Driver #2

0110

ANALOG

VIN(DL) Thermal Compensation Level, Laser Driver #1

0111

ANALOG

VIN(DL) Thermal Compensation Level, Laser Driver #2

1000

DIGITAL

Test Mode: S/H Amp, Auto Zero Null Voltage (Note 4)

1001

DIGITAL

Test Mode: S/H Amp Output Voltage (Note 4)

1010

DIGITAL

Test Mode: Set VUP and VLOW Amps to Three-State (Note 4)

1011

DIGITAL

VLOW#1 Set to Positive Output (Default is Negative)

1100

DIGITAL

VLOW#2 Set to Positive Output (Default is Negative)

1101

DIGITAL

Thermal Compensation Activated (Default is Deactivated)

1110

DIGITAL

Reset Digital Address (9-14) to Default State

1111

DIGITAL

Idle Condition (S/H Pin Defeated) (Note 3)

NOTES:

3. The Idle address is protective in that SB_H input noise cannot disturb the chip if the Idle address is selected; also, the Address inputs are High

(selecting Idle state) if the pins are open.

4. Address Numbers 9 - 11 are shaded to indicate test mode conditions and are shown for information only. These addresses are used in original

production testing and not required for user applications. However, note that Address No. 15 will force a reset for Address Numbers 9 - 14.

5. Digital Programming: To set the digital addresses, only the proper digital address and a negative pulse >100ns on SB_H is needed. To reset the

digital addresses to the default states, Address 15 and a SB_H pulse >100ns is needed. Normally the digital addresses will be set first, and the

analog addresses programmed next. The test modes, Address Numbers 9 - 11, will normally only be used during factory testing. An address

15 Reset should normally precede most programming in order to assure that the digital address states begin in their default state. Otherwise,

the digital address states will be undefined because there is no power-up-reset.

6. Analog Programming: To program the eight S/H circuits, addresses of 0-5V analog signal on VIN and negative pulses on NullB (10µs) and SB_H

(20

µs) pins are needed. The NullB pulse is valid only during the SB_H pulse and should occur during the first half of the SB_H pulse. The S/H

amplifier is auto-zeroed for zero offset when both NullB and SB_H are low. The input VIN is captured on the S/H storage capacitor during SB_H low.

7. The Diagnostic mode reads map addresses 1 - 8 via the DIAG output when DIAGINB is low.

#11 to 14

#15

#1 to 8

ADDRESS NUMBERS

DIGITAL

CONTROL

S/H

INT. TEST

#9 or 10

TEST NULL OR S/H

(NULL OR S/H)

(RESET)

SAMPLE

NULLB

VIN

DIAGNOSTIC

(SH_B INPUT)

INPUT

(DIAGINB INPUT)

HIP9022

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