ic-hc ULTRA FAST DUAL HV-KOMPARATOR

Transcription

1 Rev A, Page /0 FEATURES Independent input supply voltage range up to 36 V Input voltage range down to Differential input voltage of 36 V max. Separate digital supply Programmable hysteresis resp. hold function Propagation delay typ. 5 ns Power save mode with propagation delay of typ. 20 ns Low current consumption stand-by mode TTL and CMOS compatible logic inputs and outputs 8 ma CMOS outputs Digital supply 3 to 5.5 V All pins protected against ESD APPLICATIONS Receiver for 24 V control systems A/D and D/A converters Signal conditioning Zero-crossing detectors I/Os, level shift Timing critical measurement equipment Time-to-digital converter interfaces (TDC) PACKAGES TSSO6 BLOCK DIAGRAM IN0-6 O0 I NFAST 3 4 T0 4 HYS 3 HOLD T I 7 + Slow Fast 0 NEN IN 8-9 O Copyright 203 ic-haus

2 Rev A, Page 2/0 DESCRIPTION ic-hc features separate supply voltages for both the analogue inputs and the logic outputs. The logic power supply though must stay inside the boundaries of the inputs power supply. The ic also features a zero current consumption standby mode as well as a current saving mode, the latter reducing the current consumption by 80%, though tripling the propagation delay. Four values of input hysteresis (7 to 00 mv) or alternatively a hold function can be configured. The hold function blocks the toggling of the output for the configured hold. For hold s > 00 µs external R/C networks can be used. Both hysteresis and hold function can be deactivated. PACKAGING INFORMATION TSSO6 to JEDEC PIN CONFIGURATION TSSO6 PIN FUNCTIONS No. Name Function IN0 I 2 3 T0 4 T 5 6 I 7 IN HYS HOLD Slow Fast O0 NFAST NEN O IN0 Neg. Input Comparator 0 2 I Pos. Input Comparator 0 3 Pos. Power Supply 4 T0 Configuration Input / ext. RC 5 T Configuration input / ext. RC 6 Neg. Power Supply 7 I Pos. Input Comparator 8 IN Neg. Input Comparator 9 O Output Comparator 0 NEN Standby (NEN = hi) Logic Ground 2 Configuration Input 3 Configuration Input 4 Logic Power Supply 5/3.3 V 5 NFAST Power Save (NFAST = hi) 6 O0 Output Comparator 0

3 Rev A, Page 3/0 ABSOLUTE MAXIMUM RATINGS Beyond these values damage may occur; device operation is not guaranteed. Item Symbol Parameter Conditions Unit No. Min. Max. G00 Pos. Supply Voltage V G002 I() Current in -5 5 ma G003 V() V(IPx), V(INx) V G004 I() I(IPx), I(INx) ma G005 Voltage at referenced to V G006 Logic Supply referenced to V G007 I() Current in referenced to ma G008 I() Current in referenced to -5 5 ma G009 Voltage at referenced to V G00 I() Current in referenced to -5 5 ma G0 V() Voltage at output O0 and O referenced to V G02 I() Current in output O0 and O referenced to ma G03 I() Current in iutput O0 and O referenced to ma G04 V() V(NFAST,NEN,T0,T,,) referenced to V G05 I() I(NFAST,NEN,T0,T,,) ma G06 Vd() Susceptibility to ESD at all pins HBM, 00 pf discharged through.5 kω 3 kv G07 Ts Storage Temperature Range C G08 Tj Chip Temperature C THERMAL DATA Item Symbol Parameter Conditions Unit No. Min. Typ. Max. T0 Ta Operating Ambient Temperature Range C T02 Rthja Thermal Resistance Chip/Ambient 40 K/W All voltages are referenced to ground unless otherwise stated. All currents flowing into the device pins are positive; all currents flowing out of the device pins are negative.

4 Rev A, Page 4/0 ELECTRICAL CHARACTERISTICS Item Symbol Parameter Conditions Unit No. Min. Typ. Max. Total Device 00 VDIFF Differential Supply Voltage, 4 V 7 36 V 002 Pos. Supply Voltage =, 4 V 7 36 V 003 Neg. Supply Voltage = 9 V, = 5 V V 004 I()a Current Consumption, active NEN = lo; NFAST = lo ma NFAST = hi ma 005 I()p Current Consumption, passive NEN = open (hi), NFAST = open (hi) 0 0 µa 006 I()a Current Consumption, active NEN = lo; NFAST = lo ma NFAST = hi ma 007 I()p Current Consumption, passive NEN = open (hi) -0 0 µa 008 Logic Supply = 4 V V 009 I()p Current Consumption, passive 00 I()a Current Consumption, active Outputs O0, O NEN open (hi), NFAST open (hi) 0 0 µa V(NEN) = lo ma 0 Vs()hi Saturation Voltage hi Vs()hi = V(), I() = -3.2 ma V 02 Vs()hi Saturation Voltage hi Vs()hi = V(), I() = -8 ma; = 3 V V = 4.5 V V 03 Vs()lo Saturation Voltage lo I() = 3.2 ma V 04 Vs()lo Saturation Voltage lo I() = 8 ma; = 3 V V = 4.5 V V Logic Inputs NFAST, NEN 20 Vt()hi Threshold Voltage hi = 5.5 V 2.4 V = 3 V.7 V 202 Vt()lo Threshold Voltage lo = 5.5 V.4 V = 3 V 0.8 V 203 Vhys() Input Hysteresis mv 204 Rpu() Pull-Up Resistor at NFAST, NEN referenced to 205 Rpd() Pull-Down Resistor at T0, T,, referenced to Comparator Inputs INx, IPx 30 Vcm()fast Input Voltage Range NFAST = lo Vcm() Input Voltage Range NFAST = hi Vi() Permissible Differential Input Voltage kω kω 5 4 V(IPx) V(INx) -VDIFF VDIFF V 304 I() Input Current at INx, IPx I() = I(INx) + I(IPx); NFAST = lo µa NFAST = hi 4 µa 305 Vos Offset VOltage = lo (no hysteresis) mv 306 Vhys0 Input Hysteresis symmetrical = = T = T0 = lo 34 mv 307 Vhys Input Hysteresis symmetrical = lo, = hi, T = lo, T0 = hi 66 mv 308 Vhys2 Input Hysteresis symmetrical = lo, = T = hi, T0 = lo 0 mv 309 Vhys3 Input Hysteresis symmetrical = lo, = hi, T = T0 = hi 200 mv 30 tholdint0 internal hold = = lo, T = lo, T0 = hi µs 3 tholdint internal hold = = lo, T = hi, T0 = lo µs V V

5 Rev A, Page 5/0 ELECTRICAL CHARACTERISTICS Item Symbol Parameter Conditions Unit No. Min. Typ. Max. 32 tholdint2 internal hold = = lo, T = T0 = hi µs 33 thold external hold = = hi, T0 (T): ext. RC network with R referenced to and C referenced to or Dynamic Parameters 0.7 * RC RC.2 * RC 40 tp Propagation Delay Ix Ox Vi() > 200 mv + Vhys in 0.5 ns, NFAST = lo; = 5 V 9 20 ns = 3 V 20 ns NFAST = hi ns 402 tp Propagation Delay Difference tp(ox lo hi) tp(ox hi lo), symmetrical input signal; NFAST = lo % NFAST = hi % 403 trf() Rise and Fall Time at O0, O Cl = 0 pf, Rl = 0 kω, = 5 V, 0 % 90 % ms 2 ns 404 tpmin Minimum Pulse Duration NFAST = lo, = 5 V 9 20 ns NFAST = lo, = 3 V 25 ns NFAST = hi, = 3 V ns Hold-Timer T0, T 50 Rext ext. resistor = = hi, hold = R * C, Rext referenced to 502 Cext ext. capacitor = = hi, hold = R * C, Cext referenced to or 2 kω 0 pf

6 Rev A, Page 6/0 DESCRIPTION OF FUNCTION For noise suppression four symmetrical hysteresis settings can be configured as per Table 4. VI(x)diff T T0 Hys./Hold no Hys./Hold µs Hold µs Hold µs Hold ±7 mv Hys. 0 0 ±33 mv Hys. 0 0 ±55 mv Hys. 0 ±00 mv Hys. 0 X X no Hys./Hold R/C R/C Hold with ext. R/C Table 4: Configuration Alternatively a hold function can be used for noise suppression: Following each falling or rising edge at the outputs the toggling is blocked for the configured hold. With the hold elapsed the output will follow the input signal instantly. Table 4 shows three pre-set hold s. The hold function has the advantage over the hysteresis, that it does not shift the input switching threshold. With the aid of the hold function even extreme interferences like e.g. "bouncing" can be completely blanked. Figure 3 shows a respective example of a zero-crossing detector. Three hold s are pre-configured and can be chosen according to Table 4 without external circuitry. For different hold s external R/C networks can be used at T0 and T ( and = hi)). Both hold rs work independently, so individual hold s can be chosen. VO(x) Figure : Switching characteristic without Hysteresis/Hold VO(x)hys VI(x)diff + - Vhys VO(x)hold Figure 2: Switching characteristic with hysteresis resp. hold function VI(x)diff VO(x) VO(x)hold hysteresis too small, no hold function with hold function Figure 3: Blanking of noise using the hold function external R/C network

7 Hold function with external R/C network Using external R/C networks at TO and T results in signals as shown in Figure 5. The threshold is set to 2/3, hence the hold is calculated using τ to t hold = Rext * Cext. The discharging is accomplished via ca. 25 Ω and hence neglible, since the ext. resistor (vs. ) may not be smaller than 2 kω. The hold for comparator 0 is set by R0 and C0, whereas R and C set the hold for comparator. VI(x)diff V(Tx) 2/ 3 Rev A, Page 7/0 R0 C0 R C 3 T0 4 T 5 HYS HOLD Hold- Timer (int.) VO(x)hold = Rext * Cext Figure 4: R/C network connection Figure 5: Signals at T0 (T) with ext. R/C network EVALUATION BOARD For the ic-hc an Evaluation Board is available for test purposes. The following figures show the schematic diagram and the component side of the test PCB.

8 ic-hc Rev A, Page 8/ ON FAST IN O0 C2 TP_O0 I IN0 R I TPIN0 TPI C TPIN TPI R3 O R8 R9 J NFAST TPI C NFAST 6 O0 9 O T0 5 T ic-hc U-S U-A ic-hc IN0 8 IN I 2 I 7 0 NEN T NEN T0 JP2 JP5 JP3 C3 JP6 JP4 R0 C4 μf C0 R6 R7 R5 TPI0 C7 TPO0 TPO μf C6 R2 TP_O R4 O R3 TPIN TPI TPIN0 TPI C R I IN0 I C2 TP_O0 IN O0 JP6 JP4 C3 JP3 JP2 JP5 T0 T NEN ic-hc U-A U-S ic-hc TPI C5 J NFAST R8 R9 TP_O R4 R2 C6 μf TPO0 TPO TPI0 C7 R5 R6 R7 C0 R0 μf C4 Figure 6: Schematic of the evaluation board

9 Rev A, Page 9/0 Figure 7: Evaluation board (component side) ic-haus expressly reserves the right to change its products and/or specifications. An info letter gives details as to any amendments and additions made to the relevant current specifications on our internet website this letter is generated automatically and shall be sent to registered users by . Copying even as an excerpt is only permitted with ic-haus approval in writing and precise reference to source. ic-haus does not warrant the accuracy, completeness or liness of the specification and does not assume liability for any errors or omissions in these materials. The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or areas of applications of the product. ic-haus conveys no patent, copyright, mask work right or other trade mark right to this product. ic-haus assumes no liability for any patent and/or other trade mark rights of a third party resulting from processing or handling of the product and/or any other use of the product.

10 Rev A, Page 0/0 ORDERING INFORMATION Type Package Order Designation ic-hc TSSO6 ic-hc TSSO6 ic-hc Evaluation Board ic-hc EVAL HCD For technical support, information about prices and terms of delivery please contact: ic-haus GmbH Tel.: +49 (6 35) Am Kuemmerling 8 Fax: +49 (6 35) D Bodenheim Web: GERMANY sales@ichaus.com Appointed local distributors: