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HCPL-7860 Datasheet, PDF (12/28 Pages) Agilent(Hewlett-Packard) – Isolated 15-bit A/D Converter
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Electrical Specifications, Isolated Modulator
Unless otherwise noted, all specifications are at VIN+ = 0 V and VIN- = 0 V, all Typical specifications are at
TA = 25°C and VDD1 = VDD2 = 5 V, and all Minimum and Maximum specifications apply over the following
ranges: TA = -40°C to +85°C, VDD1 = 4.5 to 5.5 V and VDD2 = 4.5 to 5.5 V.
Parameter
Symbol Min. Typ. Max. Units Test Conditions Fig. Note
Average Input Bias Current
IIN
-1.0
µA
Average Input Resistance
RIN
270
kΩ
Input DC Common-Mode
CMRRIN
55
dB
Rejection Ratio
14 18
19
Output Logic High Voltage
VOH 3.9 4.9
V IOUT = -100 µA
Output Logic Low Voltage
VOL
0.3 0.6 V IOUT = 1.6 mA
Output Short Circuit Current |IOSC|
10
mA VOUT = VDD2 or GND2
20
Input Supply Current
IDD1
9.5 15 mA VIN+ = -350 mV
15
Output Supply Current
IDD2
8.8 15 mA to +350 mV
16
Output Clock Frequency
fCLK
9 11 14 MHz
17
Data Hold Time
tHDDAT
15
ns
21
Notes:
14. In accordance with UL1577, for devices with minimum VISO specified at 3750 Vrms, each isolated modulator (optocoupler) is
proof-tested by applying an insulation test voltage greater than 4500 Vrms for one second (leakage current detection limit
II-O < 5 µa). This test is performed before the Method b, 100% production test for partial discharge shown in VDE 0884
Insulation Characteristics Table.
15. This is a two-terminal measurement: pins 1-4 are shorted together and pins 5-8 are shorted together.
16. If VIN- (pin 3) is brought above VDD1 - 2 V with respect to GND1 an internal optical-coupling test mode may be activated. This test
mode is not intended for customer use.
17. HP recommends the use of non-chlorinated solder fluxes.
18. Because of the switched-capacitor nature of the isolated modulator, time averaged values are shown.
19. CMRRIN is defined as the ratio of the gain for differential inputs applied between VIN+ and VIN- to the gain for common-mode
inputs applied to both VIN+ and VIN- with respect to input ground GND1.
20. Short-circuit current is the amount of output current generated when either output is shorted to VDD2 or GND2. Use under these
conditions is not recommended.
21. Data hold time is amount of time that the data output MDAT will stay stable following the rising edge of output clock MCLK.
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