Precision, Quad, SPST Analog Switches

Transcription

1 9-022; Rev ; 4/94 Precision, Quad, SPST nalog Switches General escription The are precision, quad, single-pole single-throw (SPST) analog switches. The MX35 has four normally closed (N), and the MX352 has four normally open () switches. The MX353 has two and two N switches. ll three parts offer low on resistance (less than 35Ω), guaranteed to match within 2Ω between channels and to remain flat over the analog signal range ( 3Ω max). They also offer low leakage (less than 250p at +25 and less than 6n at +85 ) and fast switching (turn-on time less than 75ns and turn-off time less than 45ns). The are fabricated with Maxim s new improved 44V silicon-gate process. esign improvements guarantee extremely low charge injection (0p), low power consumption (35µW), and electrostatic discharge (ES) greater than 200. The 44V maximum breakdown voltage allows rail-to-rail analog signal handling. These monolithic switches operate with a single positive supply (+ to +3) or with split supplies (±4.5V to ±2) while retaining MOS-logic input compatibility and fast switching. MOS inputs provide reduced input loading. pplications Sample-and-Hold ircuits Military Radios Guidance and ontrol Systems ommunications Systems Heads-Up isplays attery-operated Systems Test Equipment PX, PX Features Low On Resistance < 22Ω Typical (35Ω Max) Guaranteed Matched On Resistance etween hannels < 2Ω Guaranteed Flat On Resistance Over nalog Signal Range 3Ω Max Guaranteed harge Injection < 0p Guaranteed Off-hannel Leakage < 6n at +85 ES Guaranteed > 200 per Method Single-Supply Operation (+ to +3) ipolar-supply Operation (±4.5V to ±2) TTL-/MOS-Logic ompatibility Rail-to-Rail nalog Signal Handling apability Ordering Information PRT TEMP. RNGE PIN-PKGE MX35PE 0 to Plastic IP MX35SE 0 to Narrow SO MX35/ 0 to +70 ice* MX35EPE -40 to Plastic IP MX35ESE -40 to Narrow SO MX35EJE -40 to ERIP MX35MJE -55 to ERIP Ordering Information continued on last page. * ontact factory for availability and processing to MIL-ST-883. Pin onfigurations/functional iagrams/truth Tables TOP VIEW IN OM N GN N4 OM4 IN MX IN2 OM2 N2 N3 OM3 IN3 IN OM GN 4 OM4 IN MX IN2 OM2 2 3 OM3 IN3 IN OM GN 4 OM4 IN MX IN2 OM2 N2 N3 OM3 IN3 IP/SO MX35 LOGI SWITH 0 ON IP/SO MX352 LOGI SWITH 0 ON SWITHES SHOWN FOR LOGI "0" INPUT LOGI 0 IP/SO MX353 SWITHES, 4 ON SWITHES 2, 3 ON Maxim Integrated Products all toll free for free samples or literature.

2 Precision, Quad, SPST nalog Switches SOLUTE MXIMUM RTINGS Voltage Referenced to...44v GN...25V...(GN - 0.3V) to ( + 0.3V) igital Inputs, V OM, V N, V (Note )...( - 2V) to ( + 2V)...or 30m (whichever occurs first) urrent (any terminal)...30m Peak urrent OM_, _, N_ (pulsed at ms, 0% duty cycle max)...00m ES per Method >200 Note : Note 2: ontinuous Power issipation (T = +70 ) (Note 2) Plastic IP (derate 0.53mW/ above +70 )...842mW Narrow SO (derate 8.70mW/ above +70 )...696mW ERIP (derate 0.00mW/ above +70 )...800mW Operating Temperature Ranges: MX to +70 MX35_E to +85 MX35_MJE to +25 Storage Temperature Range to +50 Lead Temperature (soldering, 0sec) Signals on N_, _, OM_, or IN_ exceeding or will be clamped by internal diodes. Limit forward diode current to maximum current rating. ll leads are soldered or welded to P board. Stresses 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 conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELETRIL HRTERISTIS ual Supplies ( = 5V, = -5V, = 5V, GN =, V INH = 2.4V, V INL = 0.8V, T = T MIN to T MX, unless otherwise noted.) SWITH nalog Signal Range On Resistance PRMETER SYMOL V OM_, V _, V N_ R ON (Notes, 4) I OM = -0m, V _ or V N_ = ±8.5V, = 3.5V, = -3.5V ONITIONS T = +25, E M T = T MIN to T MX MIN TYP MX (Note 3) UNITS V Ω On Resistance Match etween hannels (Note 5) R ON I OM = -0m, V _ or V N_ = ±, = 5V, = - 5V T = T MIN to T MX 2 4 Ω On Resistance Flatness (Note 5) R ON I OM = -0m, V _ or V N_ = ±5V, = 5V, = - 5V T = T MIN to T MX 3 5 Ω Off Leakage urrent (_ or N_) I I N V OM = -5.5V, V _ or V N_ = 5.5V, = 6.5V, = -6.5V T = T MIN to T MX, E M n OM_ Off Leakage urrent I N() V OM = -5.5V, V _ or V N_ = 5.5V, = 6.5V, = -6.5V T = T MIN to T MX, E M n OM_ On Leakage urrent I OM(ON) V OM = ±5.5V, V _ or V N_ = ±5.5V, = 6.5V, = -6.5V T = T MIN to T MX, E M n 2

3 Precision, Quad, SPST nalog Switches ELETRIL HRTERISTIS ual Supplies (continued) ( = 5V, = -5V, = 5V, GN =, V INH = 2.4V, V INL = 0.8V, T = T MIN to T MX, unless otherwise noted.) INPUT Input urrent with Input Voltage High Input urrent with Input Voltage Low SUPPLY Power-Supply Range Positive Supply urrent Negative Supply urrent Logic Supply urrent Ground urrent YNMI Turn-On Time Turn-Off Time PRMETER reak-efore-make Time elay harge Injection Off Isolation (Note 6) rosstalk (Note 7) SYMOL I INH I INL I+ I- I L I GN t ON t t Q OIRR ONITIONS IN_ = 2.4V, all others = 0.8V IN_ = 0.8V, all others = 2.4V ll channels on or off, V IN = or 5V, = 6.5V = -6.5V ll channels on or off, V IN = or 5V, = 6.5V = -6.5V ll channels on or off, V IN = or 5V, = 6.5V = -6.5V ll channels on or off, V IN = or 5V, = 6.5V = -6.5V Figure 2, V OM = ± Figure 2, V OM = ± MX353 only, Figure 3, R L = 300Ω, L = 35pF L =.0nF, V GEN =, R GEN = 0Ω, Figure 4 R L = 50Ω, L = 5pF, f = MHz, Figure 5 R L = 50Ω, L = 5pF, f = MHz, Figure 6 T = T MIN to T MX T = T MIN to T MX T = T MIN to T MX T = T MIN to T MX T = T MIN to T MX T = T MIN to T MX MIN TYP MX (Note 3) ±4.5 ± UNITS µ µ V µ µ µ µ ns ns ns p d d N or apacitance () f = MHz, Figure 7 9 pf OM Off apacitance (OM) f = MHz, Figure 7 9 pf On apacitance (OM) f = MHz, Figure 8 35 pf 3

4 Precision, Quad, SPST nalog Switches ELETRIL HRTERISTIS Single Supply ( = 2V, =, = 5V, GN =, V INH = 2.4V, V INL = 0.8V, T = T MIN to T MX, unless otherwise noted.) 0 V PRMETER SYMOL ONITIONS MIN TYP MX (Note 3) UNITS SWITH V OM_, nalog Signal Range V _, (Notes, 4) V N I OM = -0m, V N_ or V _ = 3.8V, Ω hannel On Resistance R ON = 0.8V T = T MIN to T MX 00 SUPPLY Positive Supply urrent I+ Negative Supply urrent I- Logic Supply urrent = 3.2V, all channels on or off, V IN = or 5V = 3.2V, all channels on or off, V IN = or 5V T = T MX T = T MX -5 5 = 5.25V, I L all channels on or off, V IN = or 5V T = T MX -5 5 µ µ µ Ground urrent = 5.25V, I GN all channels on or off, V IN = or 5V T = T MX -5 5 YNMI Turn-On Time t ON Figure 2, V _ or V N_ = 8V T = T MIN to T MX 35 Turn-Off Time t Figure 2, V _ or V N_ = 8V T = T MIN to T MX 40 reak-efore-make Time elay t R L = 300Ω, MX353 only, Figure 3, L = 35pF harge Injection Q Figure 8, L =.0nF, V GEN =, R GEN = µ ns ns 25 ns 5 0 p Note 3: 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 4: Guaranteed by design. Note 5: R ON = R ON max - R ON min. On-resistance match between channels and flatness are guaranteed only with bipolar-supply operation. Note 6: See Figure 5. Off Isolation = 20 log 0 [ V OM (V N or V ) ], VOM = output, V N or V = input to off switch. Note 7: etween any two switches. See Figure 6. 4

5 Precision, Quad, SPST nalog Switches Typical Operating haracteristics (, unless otherwise noted.) RON (Ω) RON (Ω) ON RESISTNE vs. V OM N POWER-SUPPLY VOLTGE : = 5V, = -5V : =, = - : = 5V, = -5V : = 2, = V OM (V) ON RESISTNE vs. V OM (SINGLE-SUPPLY) = 2V = T = +25 T = +85 MX35-0 MX35-04 RON (Ω) LEKGE (n) ON RESISTNE vs. V OM N TEMPERTURE = 5V = -5V T = +25 T = +85 T = V OM (V) LEKGE URRENTS vs. TEMPERTURE = 6.5V = -6.5V V OM = ±5V V N OR V = +5V MX35-02 MX35-05 RON (Ω) ON LEKGE (n) ON RESISTNE vs. V OM N TEMPERTURE = = 5V = = 5V = V OM (V) ON LEKGE URRENTS vs. TEMPERTURE = 6.5V = -6.5V V OM = ±5V V N OR V = ±5V MX35-03 MX V OM (V) Q (p) = 5V = -5V = 5V HRGE INJETION vs. NLOG VOLTGE L = nf TEMPERTURE ( ) TEMPERTURE ( ) SUPPLY URRENT vs. TEMPERTURE 00 : I+ at = 6.5V : I- at = -6.5V 0 : I L at = 5V V N MX35-07 I+, I-, IL (µ) MX V OM (V) TEMPERTURE ( ) 5

6 Precision, Quad, SPST nalog Switches Pin escription PIN NME, 8, 9, 6 IN-IN4 Inputs 2, 7, 0, 5 OM-OM4 nalog Switch ommon Terminal 3, 6,, 4 or N Switch Inputs 4 Negative Supply-Voltage Input 5 GN Ground 2 Logic Supply Voltage pplications Information Operation with Supplies Other than ±5V The main limitation of supply voltages other than ±5V is reduced analog-signal range. The MX35/ MX352/MX353 operate with ±5V to ±2 bipolar supplies. The Typical Operating haracteristics graphs show typical on resistance (RON) for ±5V, ±, and ±5V supplies. (Switching times increase by a factor of two or more for operation at ±5V.) The MX35/ MX352/MX353 can operate from + to +3 unipolar supplies. Each device can also be powered from unbalanced supplies such as +24V and -5V. onnect to when operating with a single supply. must be connected to +5V to be TTL compatible or to for MOS-logic input levels. FUNTION 3 Positive Supply-Voltage Input connected to substrate Overvoltage Protection Proper power-supply sequencing is recommended for all MOS devices. o not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the devices. lways sequence first, followed by,, and logic inputs. If power-supply sequencing is not possible, add two small signal diodes in series with the supply pins for overvoltage protection (Figure ). dding diodes reduces the analog signal range to V below and V below, but low switch resistance and low-leakage characteristics are unaffected. evice operation is unchanged, and the difference between to should not exceed +44V. _ OM_ V g Figure. Overvoltage Protection Using External locking iodes 6

7 Precision, Quad, SPST nalog Switches Test ircuits/timing iagrams LOGI INPUT SWITH OUTPUT +3V 50% t ON Figure 2. Switching-Time Test ircuit LOGI INPUT SWITH OUTPUT (VO) +3V SWITH OUTPUT 2 (VO2) V O t tr < 20ns tf < 20ns 0.9V 0 0.9V 0 LOGI INPUT WVEFORMS INVERTE FOR SWITHES THT HVE THE OPPOSITE LOGI SENSE. 50% t 0.9V0 t 0.9V02 SWITH INPUT LOGI INPUT V OM = + V OM2 = + LOGI INPUT V OM OM OR N IN +5V +5V GN -5V REPET TEST FOR IN N S, FOR LO ONITIONS, SEE Electrical haracteristics L INLUES FIXTURE N STRY PITNE. V O = V OM ( RL ) RL + RON OM_ OM_ IN_ +5V +5V GN -5V _ N_ R L2 L INLUES FIXTURE N STRY PITNE. R L 300Ω V O2 L2 SWITH OUTPUT R L = 300Ω L = 35pF L 35pF R L V O V O L Figure 3. reak-efore-make Test ircuit (MX353 only) 7

8 Precision, Quad, SPST nalog Switches Test ircuits/timing iagrams (continued) V GEN SIGNL GENERTOR 0dm NLYZER R GEN R L OM +5V OM GN Figure 4. harge-injection Test ircuit OM +5V N OR GN IN +5V N OR -5V V IN = +3V +5V IN L, 2.4V V O V O IN IN SIGNL GENERTOR 0dm NLYZER, 2.4V R L N02 +5V OM IN ON ON Q = ( V O )( L ) GN +5V V O N0 IN2 OM2 IN EPENS ON SWITH ONFIGURTION; INPUT POLRITY ETERMINE Y SENSE OF SWITH. 50Ω N, 2.4V -5V -5V Figure 5. Off-Isolation Test ircuit Figure 6. rosstalk Test ircuit 8

9 Precision, Quad, SPST nalog Switches Test ircuits/timing iagrams (continued) PITNE METER f = MHz +5V OM N OR GN Figure 7. hannel-off apacitance +5V -5V IN 2.4V PITNE METER f = MHz +5V OM N OR GN +5V -5V Figure 8. hannel-on apacitance Test ircuit IN 9

10 Precision, Quad, SPST nalog Switches Ordering Information (continued) PRT TEMP. RNGE PIN-PKGE MX352PE 0 to Plastic IP MX352SE 0 to Narrow SO MX352/ 0 to +70 ice* MX352EPE -40 to Plastic IP MX352ESE -40 to Narrow SO MX352EJE -40 to ERIP MX352MJE -55 to ERIP MX353PE 0 to Plastic IP MX353SE 0 to Narrow SO MX353/ 0 to +70 ice* MX353EPE -40 to Plastic IP MX353ESE -40 to Narrow SO MX353EJE -40 to ERIP MX353MJE -55 to ERIP * ontact factory for dice specifications. hip Topography GN OM4 OM IN IN2 IN " (2.03mm) IN3 OM2 OM " (2.46mm) TRNSISTOR OUNT: 36; SUSTRTE ONNETE TO. MX35 MX352 MX353 PIN NME PIN NME PIN NME N N N N N N 0

11 Precision, Quad, SPST nalog Switches Package Information L 2 e 3 α E E e e IM 2 3 E E e e e L α MIN INHES MX S S MILLIMETERS MIN MX S 7.62 S PIN PLSTI UL-IN-LINE PKGE E H IM E e H h L α MIN INHES MX S MILLIMETERS MIN MX S e 0.27mm 0.004in. h x 45 L α 6-PIN PLSTI SMLL-OUTLINE (NRROW) PKGE

12 Precision, Quad, SPST nalog Switches Package Information (continued) L Q S e L S α E E IM E E e L L Q S S α MIN INHES MX S MILLIMETERS MIN MX S PIN ERMI UL-IN-LINE PKGE Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 2 Maxim Integrated Products, 20 San Gabriel rive, Sunnyvale, (408) Maxim Integrated Products Printed US is a registered trademark of Maxim Integrated Products.