ISL58781 Datasheet, PDF (5/15 Pages) Intersil Corporation – Laser Diode Driver with Serial Control and Write Current DAC

ISL58781
PMAX DAC (10-bit) DC Specifications Standard conditions unless otherwise noted.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
DNL-PMAX
Differential Non-Linearity
(Note 8)
-3.5
+3.5 LSB
INL-PMAX
Integral Non-Linearity
At 200h Resistive Load ~0V to ~3V
+40
LSB
ZS-PMAX
Zero-Scale Error
(Note 9)
-2
0
+2
LSB
V_RSET
RSET Pin Voltage
1.03 1.06 1.11
V
NOTES:
8. Differential non-linearity (DNL) is the differential between the measured and ideal 1 LSB change of any two adjacent codes.
9. Zero-scale error (ZS) is the deviation from zero current output when the digital input code is zero.
IOUT1/2 Write Power DAC (10-bit) DC Specifications Standard conditions unless otherwise noted.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
MAX
(Note 14) TYP (Note 14) UNIT
DNL-W
Differential Non-Linearity
-1.7
+1.0
LSB
INL-W
Integral Non-Linearity
At 200h Resistive Load
~0V to ~3V
+21
LSB
FS_OUT-W620 Write DAC Full-Scale Output
WriteDAC = 0x3FF. Headroom
475
500
mA
Current R_SET = 620
depends on I_OUT.
Reg 1-21 = 8F
FS_OUT-H1.1
Write DAC Full-Scale Output
Current
WriteDAC = 0x3FF, Reg 1-21 = 8F
700
773
875
mA
Fixed Headroom = 1.1V
PSRR_-FS
Power Supply Rejection -Full-Scale vs V_SO (Note 10)
Current
-30
dB
TC_-FS-IOUT
Temperature Coefficient -Full-Scale (Note 11) 0°C to +85°C
Current
-32
ppm/C
ZS-W
Zero-scale error
(Note 12)
-2
0
+2
LSB
R_OUT-WDAC Write DAC Output Series Resistance WriteDAC = PMAX = 0x3FF
PMAX bias overdriven (Note 13)
1.1
1.4

NOTES:
10. Full scale output current power supply sensitivity (SFS) is measured by varying the V_SO from 4.5V to 5.5V DC and measuring
the effect of this signal on the full-scale output current.
11. Full scale output current temperature coefficient (TFS) is given by delta (full scale output current)/(T).
12. Zero-scale error (ZS) is the deviation from zero current output when the digital input code is zero.
13. PMAX bias overdriven via R_SET.
14. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established
by characterization and are not production tested.
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5
FN6909.3
December 3, 2015