Improved, SPST/SPDT Analog Switches

Transcription

1 9-0; Rev 2; 2/96 Improved, PT/PT nalog witches General escription Maxim s redesigned G7/G/G9 precision, CMO, monolithic analog switches now feature guaranteed on-resistance matching (3Ω max) between switches and guaranteed on-resistance flatness over the signal range (Ω max). These switches conduct equally well in either direction and guarantee low charge injection, low power coumption, and an E tolerance of 0 minimum per Method The new design offers low off-leakage current over temperature (less than n at + C). The G7/G are single-pole/single-throw (PT) switches. The G7 is normally closed, and the G is normally open. The G9 is singlepole/double-throw (PT) with one normally closed switch and one normally open switch. witching times are less than 7 max for t and less than max for t. Operation is from a single + to +3 supply, or bipolar ±.V to ±2 supplies. The improved G7/G/G9 are fabricated with a V silicon-gate process. pplicatio ample-and-hold Circuits Test Equipment Modems Guidance and Control ystems udio ignal Routing Communicatio ystems Battery-Operated ystems Fax Machines PBX, PBX Military Radios New Features Plug-In Upgrades for Industry-tandard G7/G/G9 Improved R () Match Between Channels (3Ω max, G9 only) Guaranteed RFLT() Over ignal Range (Ω max) Improved Charge Injection (0pC max) Improved Off-Leakage Current Over Temperature (<n at + C) Withstand Electrostatic ischarge (0 min) per Method 30.7 Existing Features Low R () (3Ω max) ingle-upply Operation + to +3 Bipolar-upply Operation ±.V to ±2 Low Power Coumption (3µW max) Rail-to-Rail ignal Handling TTL/CMO-Logic Compatible Ordering Information PRT G7CJ G7CY G7C/ G7J G7Y TEMP. RNGE 0 C to +70 C 0 C to +70 C 0 C to +70 C -0 C to + C -0 C to + C P-PCKGE Plastic IP O ice* Plastic IP O Ordering Information continued at end of data sheet. * Contact factory for dice specificatio. G7/G/G9 Pin Configuratio/Functional iagrams/truth Tables TOP VIEW 2 N.C. 2 7 N.C GN 3 6 GN 3 6 GN 3 6 G7 G G9 IP/O IP/O IP/O G7 G G N.C. = NO TERNL CNECTI E HOWN FOR "0" PUT Maxim Integrated Products For free samples & the latest literature: or phone

2 Improved, PT/PT nalog witches G7/G/G9 BOLUTE MXIMUM RTG Voltage Referenced to...v GN...2V...(GN - 0.3V) to ( + 0.3V) igital Inputs V, V (Note )...( - 2V) to ( + 2V) or 30m (whichever occurs first) Continuous Current (any terminal) (Note )...30m Peak Current, or (pulsed at ms, 0% duty cycle max)..00m Continuous Power issipation (T = +70 C) Plastic IP (derate 9.09mW/ C above +70 C)...727mW O (derate.mw/ C above +70 C)...7mW CERIP (derate.00mw/ C above +70 C)...60mW Operating Temperature Ranges G_C_...0 C to +70 C G...-0 C to + C G_K...- C to +2 C torage Temperature Range...-6 C to +0 C Lead Temperature (soldering, 0sec) C Note : ignals on,, or exceeding or are clamped by internal diodes. Limit forward current to maximum current ratings. tresses beyond those listed under bsolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditio beyond those indicated in the operational sectio of the specificatio is not implied. Exposure to absolute maximum rating conditio for extended periods may affect device reliability. ELECTRICL CHRCTERITIC ual upplies ( = +V, = -V, = V, GN =, = 0.V, VH = 2.V, T = TM to TMX, unless otherwise noted.) PRMETER nalog ignal Range rain-ource On-Resistance YMBOL V _, V R () (Note 3) = 3.V, = -3.V, V = ±, I = -0m CITI M TYP MX (Note 2) - C, 3 30 T = T M to T MX UNIT V Ω On-Resistance Match Between Channels (Note ) R () = V, = -V, 3 V = ±, I = -0m T = T M to T MX Ω On-Resistance Flatness (Note ) R FLT() = V, = -V, V = ±V, I = -0m T = +2 C T = T M to T MX 6 Ω ource-off Leakage Current (Note ) rain-off Leakage Current (Note ) rain-on Leakage Current (Note ) I () I () I () ± ± = 6.V, = -6.V, V = ±.V, T = T M to C, - V =.V T MX G7/ = 6.V, G T = T M to C, - = -6.V, T MX - V = ±.V, V =.V G9 T = T M to C, -0 0 T MX G7/ G C, -0 0 = 6.V, = -6.V, V = ±.V, V = ±.V G9 T = T M to T MX T = T M to T MX C, n n n 2

3 Improved, PT/PT nalog witches ELECTRICL CHRCTERITIC ual upplies (continued) ( = +V, = -V, = V, GN =, V L = 0.V, V H = 2.V, T = T M to T MX, unless otherwise noted.) PRMETER PUT Logic Input Current with Input Voltage High Logic Input Current with Input Voltage Low YNMIC Turn-On Time I H I L t C () V = 2.V V =, f = MHz, Figure, V = 0.V G7/G, V = ±, Figure 2 Turn-Off Time t G7/G, V = ±, Figure 2 T = T M to T MX Traition Time t TRN G9, V = ±, Figure 3 T = T M to T MX Break-Before-Make Interval Charge Injection (Note 3) Off-Isolation Rejection Ratio (Note 6) Crosstalk (Note 7) rain Off-Capacitance ource Off-Capacitance YMBOL t Q OIRR C () CITI T = T M to T MX G9, V = V 2 = ±, Figure, VGEN =, Figure, = 00Ω, C L = pf, f = MHz, Figure 6, G9, = 0Ω, C L = pf, f = MHz, Figure 7, V =, f = MHz, Figure, M TYP MX (Note 2) UNIT pc db db pf pf G7/G/G9 rain-ource On-Capacitance C () or C () V =, f = MHz, Figure 9, G7/G G pf UPPLY Positive upply Current I+ = 6.V, = -6.V, V = or V T = T M to T MX Negative upply Current I- = 6.V, = -6.V, V = or V T = T M to T MX Logic upply Current I L = 6.V, = -6.V, V = or V T = T M to T MX Ground Current I GN = 6.V, = -6.V, V = or V T = T M to T MX

4 Improved, PT/PT nalog witches G7/G/G9 ELECTRICL CHRCTERITIC ingle upply ( = +2V, =, = V, GN =, V H = 2.V, V L = 0.V,, unless otherwise noted.) PRMETER nalog ignal Range rain-ource On-Resistance YNMIC R () Turn-On Time t G7/G, V = V, Figure 2 Turn-Off Time t G7/G, V = V, Figure 2 Break-Before-Make Interval t G9, = 000Ω, C L = 3pF, Figure Charge Injection (Note 3) UPPLY YMBOL V NLOG Positive upply Current I+ Negative upply Current I- Q CITI (Note 3) 0 2 V I = -0m, V = 3.V, = 0.V 0 00 Ω C L = 0nF, V GEN =, R GEN =, Figure ll channels on or off, = 3.2V, V L =.2V, V = or V ll channels on or off, = 3.2V, V L =.2V, V = or V M TYP MX (Note 2) UNIT pc Logic upply Current I L ll channels on or off, V L =.2V, V = or V Ground Current I GN ll channels on or off, V L =.2V, V = or V Note 2: Typical values are for design aid only, are not guaranteed, and are not subject to production testing. The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in this data sheet. Note 3: Guaranteed by design. Note : On-resistance match between channels and flatness is guaranteed only with bipolar-supply operation. Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured at the extremes of the specified analog range. Note : Leakage parameters I (), I (), and I () are 00% tested at the maximum rated hot temperature and guaranteed by correlation at +2 C. Note 6: Off-Isolation Rejection Ratio = log (V /V ), V = output, V = input to off switch. Note 7: Between any two switches.

5 Improved, PT/PT nalog witches Typical Operating Characteristics (, unless otherwise noted.) R() (Ω) R() (Ω) REITNCE vs. V N POWER-UPPLY VOLTGE : = V, = -V B: =, = - C: = V, = -V : = 2, = = 2V = V (V) -REITNCE vs. V N TEMPERTURE B T = +2 C T = + C C G7-0 G7-0 R() (Ω) -LEKGE (n) = V = -V -REITNCE vs. V N TEMPERTURE T = + C T = +2 C T = - C V (V) -LEKGE CURRENT vs. TEMPERTURE = 6.V = -6.V V = ±V V = V ± G7-02 G7-0 R() (Ω) -LEKGE (n) = -REITNCE vs. V (GLE UPPLY) = V = 0 0 V (V) = V = 2 -LEKGE CURRENT vs. TEMPERTURE = 6.V = -6.V V = ±V V = ±V G7-03 G7-06 G7/G/G V (V) TEMPERTURE ( C) TEMPERTURE ( C) 60 0 = V = -V CHRGE JECTI vs. NLOG VOLTGE G UPPLY CURRENT vs. TEMPERTURE : I+ at = 6.V B: I- at = -6.V C: I L at V L = V G7-0 Q (pc) 0 - I+, I-, IL () B C V (V) TEMPERTURE ( C)

6 Improved, PT/PT nalog witches G7/G/G9 Pin escription G7 P G G9 NME FUNCTI nalog-witch ource Terminal (normally closed) nalog-witch ource Terminal (normally open) 2 nalog-witch ource Terminal (normally closed) 2 2 N.C. No Internal Connection GN Logic Ground nalog-ignal Positive upply Input Logic-Level Positive upply Input Logic-Level Input nalog-ignal Negative upply Input nalog-witch rain Terminal 2 nalog-witch ource Terminal 2 (normally open) pplicatio Information Operation with upply Voltages Other than ±V Using supply voltages other than ±V reduces the analog signal range. The G7/G/G9 switches operate with ±.V to ±2 bipolar supplies or with a + to +3 single supply; connect to when operating with a single supply. lso, all device types can operate with unbalanced supplies, such as +2V and -V. must be connected to +V to be TTL compatible, or to for CMO-logic level inputs. The Typical Operating Characteristics graphs show typical on-resistance with ±2, ±V, ±, and ±V supplies. (witching times increase by a factor of two or more for operation at ±V.) Overvoltage Protection Proper power-supply sequencing is recommended for all CMO devices. o not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the devices. lways sequence on first, followed by,, and logic inputs. If power-supply sequencing is not possible, add two small, external signal diodes in series with the supply pi for overvoltage protection (Figure ). V g dding diodes reduces the analog signal range to V below and V above, without affecting low switch resistance and low leakage characteristics. evice operation is unchanged, and the difference between and should not exceed +V. G_ Figure. Overvoltage Protection Using External Blocking iodes 6

7 Improved, PT/PT nalog witches Test Circuits/Timing iagrams PUT OUTPUT +3V 0% t Figure 2. G7/G witching Time t t R < t F < 0.9 x 0.9 x PUT WVEFORM VERTE FOR E THT HVE THE OPPOITE ENE. PUT PUT +V +V GN -V C L CLUE FIXTURE N TRY CPCITNCE. R = V ( L ) + R ( ) G7 G 300Ω OUTPUT C L 3pF G7/G/G9 PUT +3V 0% t TRN t R < t F < t TRN +V +V 2 G9 000Ω C L 3pF OUTPUT 2 0. x 2 0. x PUT GN -V C L CLUE FIXTURE N TRY CPCITNCE. Figure 3. G9 Traition Time 7

8 Improved, PT/PT nalog witches G7/G/G9 Test Circuits/Timing iagrams (continued) PUT OUTPUT OUTPUT 2 +3V 2 0% t 0.9 x Figure. G9 Break-Before-Make Interval t 0.9 x + PUT, 2 2 +V +V GN -V 300Ω C L CLUE FIXTURE N TRY CPCITNCE. G9 C L 3pF V GEN +V GN +V G7 G G9 C L 0nF Q = x C L EPEN CFIGURTI; PUT POLRITY ETERME BY ENE OF. -V V = +3V Figure. Charge Injection

9 Improved, PT/PT nalog witches Test Circuits/Timing iagrams (continued) IGNL GENERTOR 0dBm NETWORK NLYZER +V 0nF or 2 GN Figure 6. Off-Isolation Rejection Ratio +V G7 G G9 -V 0nF or 2.V IGNL GENERTOR 0dBm NETWORK NLYZER or 2.V 0nF Figure 7. G9 Crosstalk 2 +V GN +V -V G9 0nF 0Ω G7/G/G9 0nF +V +V G7 G G9 0nF +V +V G7 G G9 CPCITNCE METER f = MHz GN 0nF or 2.V CPCITNCE METER f = MHz GN 0nF or 2.V -V -V Figure. rain-ource Off-Capacitance Figure 9. rain-ource On-Capacitance 9