LT1999-10/LT1999-20/ LT1999-50 High Voltage, Bidirectional ...

1 LT1999-10/LT1999-20/ LT1999-501 Rev. EFor more information FeedbackTYPICAL APPLICATION FEATURESDESCRIPTIONHigh Voltage, Bidirectional current Sense AmplifierThe LT 1999 is a high speed precision current sense amplifier, designed to monitor Bidirectional currents over a wide common mode range. The LT1999 is offered in three gain options: 10V/V, 20V/V, and 50V/ LT1999 senses current via an external resistive shunt and generates an output voltage, indicating both mag-nitude and direction of the sensed current . The output voltage is referenced halfway between the supply voltage and ground, or an external voltage can be used to set the reference level. With a 2 MHz bandwidth and a com-mon mode input range of 5V to 80V, the LT1999 is suit-able for monitoring currents in H-Bridge motor controls, switching power supplies, solenoid currents, and battery charge currents from full charge to depletion.

2 The LT1999 operates from an independent 5V supply and draws A shutdown mode is provided for mini-mizing power LT1999 is available in an 8-lead SOP, an 8-lead MSOP (original pinout), or an 8-lead pinout option engineered for nBuffered Output with 3 Gain Options: 10V/V, 20V/V, 50V/V nGain Accuracy: Max nInput Common Mode Voltage Range: 5V to 80V nAC CMRR > 80dB at 100kHz nInput Offset Voltage: Max n 3dB Bandwidth: 2 MHz nSmooth, Continuous Operation Over Entire Common Mode Range n4kV HBM Tolerant and 1kV CDM Tolerant nLow Power Shutdown <10 A n 55 C to 150 C Operating Temperature Range n8-Lead MSOP and 8-Lead SO (Narrow) Packages n8-Lead MSOP Pinout Option Engineered for FMEA nAEC-Q100 Qualified for Automotive Applications nHigh Side or Low Side current Sensing nH-Bridge Motor Control nSolenoid current Sense nHigh Voltage Data Acquisition nPWM Control Loops nFuse/MOSFET MonitoringFull Bridge Armature current MonitorTIME (10 s/DIV) (2V/DIV)V+IN (20V/DIV)1999 TA01bVOUTV+ +V+V+5 VRS1999 TA01a+ + FVOUTRGV+INV INVREFVSHDNV+V+All registered trademarks and trademarks are the property of their respective owners.

3 LT1999-10/LT1999-20/ LT1999-502 Rev. EFor more information MAXIMUM RATINGSD ifferential Input Voltage +IN to IN (Notes 1, 3) .. 60V, 10ms+IN to GND, IN to GND (Note 2) .. to 88 VTotal Supply Voltage (V+ to GND) ..6 VInput Voltage Pins 6 and 8 ..V+ + , Short-Circuit Duration (Note 4) ..IndefiniteOperating Ambient Temperature (Note 5) LT1999C .. 40 C to 85 C LT1999I .. 40 C to 85 C LT1999H .. 40 C to 125 C LT1999MP .. 55 C to 150 C(Note 1)ORIGINAL MSOP PINOUT1234V++IN INV+8765 SHDNOUTREFGNDTOP VIEWMS8 PACKAGE8-LEAD PLASTIC MSOPTJMAX = 150 C, JA = 300 C/WMSOP PINOUT ENGINEERED FOR FMEA1234+IN INNCV+8765 SHDNOUTREFGNDTOP VIEWMS8 PACKAGE8-LEAD PLASTIC MSOPTJMAX = 150 C, JA = 300 C/W12348765 TOP VIEWSHDNOUTREFGNDV++IN INV+S8 PACKAGE8-LEAD PLASTIC SOTJMAX = 150 C.

4 JA = 190 C/WPIN CONFIGURATIONORDER INFORMATIONLEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONSPECIFIED TEMPERATURE RANGELT1999 CMS8-10#PBFLT1999 CMS8-10#TRPBFLTFPB8-Lead Plastic MSOP0 C to 70 CLT1999 IMS8-10#PBFLT1999 IMS8-10#TRPBFLTFPB8-Lead Plastic MSOP 40 C to 85 CLT1999 HMS8-10#PBFLT1999 HMS8-10#TRPBFLTFPB8-Lead Plastic MSOP 40 C to 125 CLT1999 MPMS8-10#PBFLT1999 MPMS8-10#TRPBFLTFQP8-Lead Plastic MSOP 55 C to 150 CLT1999 CMS8-10F#PBFLT1999 CMS8-10F#TRPBFLTGVB8-Lead MSOP FMEA Pinout0 C to 70 CLT1999 IMS8-10F#PBFLT1999 IMS8-10F#TRPBFLTGVB8-Lead MSOP FMEA Pinout 40 C to 85 CLT1999 HMS8-10F#PBFLT1999 HMS8-10F#TRPBFLTGVB8-Lead MSOP FMEA Pinout 40 C to 125 CLT1999 MPMS8-10F#PBFLT1999 MPMS8-10F#TRPBFLTGVB8-Lead MSOP FMEA Pinout 55 C to 150 CLT1999CS8-10#PBFLT1999CS8-10#TRPBF19991 08-Lead Plastic SO0 C to 70 CLT1999IS8-10#PBFLT1999IS8-10#TRPBF19991 08-Lead Plastic SO 40 C to 85 CLT1999HS8-10#PBFLT1999HS8-10#TRPBF19991 08-Lead Plastic SO 40 C to 125 CLT1999 MPS8-10#PBFLT1999 MPS8-10#TRPBF99MP108-Lead Plastic SO 55 C to 150 CLT1999 CMS8-20#PBFLT1999 CMS8-20#TRPBFLTFNZ8-Lead Plastic MSOP0 C to 70 CLT1999 IMS8-20#PBFLT1999 IMS8-20#TRPBFLTFNZ8-Lead Plastic MSOP 40 C to 85 CLT1999 HMS8-20#PBFLT1999 HMS8-20#TRPBFLTFNZ8-Lead Plastic MSOP 40 C to 125 CSpecified Temperature Range (Note 6) LT1999C.

5 0 C to 70 C LT1999I .. 40 C to 85 C LT1999H .. 40 C to 125 C LT1999MP .. 55 C to 150 CJunction Temperature ..150 CStorage Temperature Range .. 65 C to 150 C LT1999-10/LT1999-20/ LT1999-503 Rev. EFor more information FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONSPECIFIED TEMPERATURE RANGELT1999 MPMS8-20#PBFLT1999 MPMS8-20#TRPBFLTFQQ8-Lead Plastic MSOP 55 C to 150 CLT1999 CMS8-20F#PBFLT1999 CMS8-20F#TRPBFLTGVC8-Lead MSOP FMEA Pinout0 C to 70 CLT1999 IMS8-20F#PBFLT1999 IMS8-20F#TRPBFLTGVC8-Lead MSOP FMEA Pinout 40 C to 85 CLT1999 HMS8-20F#PBFLT1999 HMS8-20F#TRPBFLTGVC8-Lead MSOP FMEA Pinout 40 C to 125 CLT1999 MPMS8-20F#PBFLT1999 MPMS8-20F#TRPBFLTGVC8-Lead MSOP FMEA Pinout 55 C to 150 CLT1999CS8-20#PBFLT1999CS8-20#TRPBF19992 08-Lead Plastic SO0 C to 70 CLT1999IS8-20#PBFLT1999IS8-20#TRPBF19992 08-Lead Plastic SO 40 C to 85 CLT1999HS8-20#PBFLT1999HS8-20#TRPBF19992 08-Lead Plastic SO 40 C to 125 CLT1999 MPS8-20#PBFLT1999

6 MPS8-20#TRPBF99MP208-Lead Plastic SO 55 C to 150 CLT1999 CMS8-50#PBFLT1999 CMS8-50#TRPBFLTFPC8-Lead Plastic MSOP0 C to 70 CLT1999 IMS8-50#PBFLT1999 IMS8-50#TRPBFLTFPC8-Lead Plastic MSOP 40 C to 85 CLT1999 HMS8-50#PBFLT1999 HMS8-50#TRPBFLTFPC8-Lead Plastic MSOP 40 C to 125 CLT1999 MPMS8-50#PBFLT1999 MPMS8-50#TRPBFLTFQR8-Lead Plastic MSOP 55 C to 150 CLT1999 CMS8-50F#PBFLT1999 CMS8-50F#TRPBFLTGVD8-Lead MSOP FMEA Pinout0 C to 70 CLT1999 IMS8-50F#PBFLT1999 IMS8-50F#TRPBFLTGVD8-Lead MSOP FMEA Pinout 40 C to 85 CLT1999 HMS8-50F#PBFLT1999 HMS8-50F#TRPBFLTGVD8-Lead MSOP FMEA Pinout 40 C to 125 CLT1999 MPMS8-50F#PBFLT1999 MPMS8-50F#TRPBFLTGVD8-Lead MSOP FMEA Pinout 55 C to 150 CLT1999CS8-50#PBFLT1999CS8-50#TRPBF19995 08-Lead Plastic SO0 C to 70 CLT1999IS8-50#PBFLT1999IS8-50#TRPBF19995 08-Lead Plastic SO 40 C to 85 CLT1999HS8-50#PBFLT1999HS8-50#TRPBF19995 08-Lead Plastic SO 40 C to 125 CLT1999 MPS8-50#PBFLT1999 MPS8-50#TRPBF99MP508-Lead Plastic SO 55 C to 150 CAUTOMOTIVE PRODUCTS**LT1999 HMS8-10F#WPBFLT1999 HMS8-10F#WTRPBFLTGVB8-Lead MSOP FMEA Pinout 40 C to 125 CLT1999 HMS8-20F#WPBFLT1999 HMS8-20F#WTRPBFLTGVC8-Lead MSOP FMEA Pinout 40 C to 125 CLT1999 HMS8-50F#WPBFLT1999 HMS8-50F#WTRPBFLTGVD8-Lead MSOP FMEA Pinout 40 C to 125 CContact the factory for parts specified with wider operating temperature ranges.

7 *The temperature grade is identified by a label on the shipping and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these INFORMATIONLT1999-10/LT1999-20/ LT1999-50 4 Rev. EFor more information CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, 0 C < TA < 70 C for C-grade parts, 40 C < TA < 85 C for I-grade parts, and 40 C < TA < 125 C for H-grade parts, otherwise specifications are at TA = 25 C.

8 V+ = 5V, GND = 0V, VCM = 12V, VREF = floating, VSHDN = floating, unless otherwise specified. See Figure Input Sense Voltage (Note 7) VSENSE = V+IN V INLT1999-10 LT1999-20 LT1999-50l l l V VVCMCM Input Voltage Rangel 580 VRIN(DIFF)Differential Input Impedance VINDIFF = 2 RINCMCM Input Impedance VCM = to 80V VCM = 5V to l5 6M k VOSII nput Referred Voltage Offset l 750 1500 500750 1500 V V VOSI/ TInput Referred Voltage Offset Drift 5 V/ CAVGainLT1999-10 LT1999-20 LT1999-50l l 20 V/V V/VAV ErrorGain Error VOUT = 2Vl Bias current I(+IN) = I( IN) (Note 8)VCM > VCM = 5V VSHDN = , 0V < VCM < 80Vl l l100 A mA AIOSI nput Offset current IOS = I(+IN) I( IN) (Note 8)VCM > VCM = 5V VSHDN = , 0V < VCM < 80Vl l l 1 10 10 A A APSRRS upply Rejection RatioV+ = to Input Common Mode RejectionVCM = 5V to 80V VCM = 5V to VCM = 12V, 7VP-P, f = 100kHz, VCM = 0V, 7VP-P, f = 100kHzl l l l96 96 75 80105 120 90 100dB dB dB dBenDifferential Input Referred Noise Voltage Densityf = 10kHz f = to 10Hz97 8nV/ Hz VP-PREFRRREF Pin Rejection, V+ = VREF = VREF = VREF = LT1999-10 LT1999-20 LT1999-50 l l l 62 62 62 70 70 70 dB dB dBRREFREF Pin Input Impedance VSHDN = l60 M VREFOpen Circuit Voltage VSHDN = VVREFRREF Pin Input Range (Note 9)

9 LT1999-10 LT1999-20 LT1999-50l l + V+ V+ V VLT1999-10/LT1999-20/LT1999-505 Rev. EFor more information CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, 0 C < TA < 70 C for C-grade parts, 40 C < TA < 85 C for I-grade parts, and 40 C < TA < 125 C for H-grade parts, otherwise specifications are at TA = 25 C. V+ = 5V, GND = 0V, VCM = 12V, VREF = floating, VSHDN = floating, unless otherwise specified. See Figure Pull-Up CurrentV+ = , VSHDN = 0V l 6 2 AVIHSHDN Pin Input HighlV+ Pin Input Signal BandwidthLT1999-10 LT1999-20 LT1999-502 2 MHz MHzSRSlew Rate3V/ stsSettling Time due to Input Step, VOUT = s trCommon Mode Step Recovery Time VCM = 50V, 20ns (Note 10)LT1999-10 LT1999-20 1 s s s VSSupply Voltage (Note 11) CurrentVCM > VCM = 5V V+ = , VSHDN = , VCM > 0Vl l 10mA mA AROO utput Impedance IO = ISRCS ourcing Output CurrentRLOAD = 50 to GNDl63140mAISNKS inking Output CurrentRLOAD = 50 to V+l152640mAVOUTS wing Output High (with Respect to V+)RLOAD = 1k to Mid-Supply RLOAD = Openl l125 5250 125mV mVSwing Output Low (with Respect to V )

10 RLOAD = 1k to Mid-Supply RLOAD = Openl l250 150400 225mV mVtONTurn-On TimeVSHDN = 0V to 5V1 stOFFTurn-Off TimeVSHDN = 5V to 0V1 sLT1999-10/LT1999-20/LT1999-506 Rev. EFor more information CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, 55 C < TA < 150 C for MP-grade parts, otherwise specifications are at TA = 25 C. V+ = 5V, GND = 0V, VCM = 12V, VREF = floating, VSHDN = floating, unless otherwise specified. See Figure Input Sense Voltage (Note 7) VSENSE = V+IN V INLT1999-10 LT1999-20 LT1999-50l l l V VVCMCM Input Voltage Rangel 580 VRIN(DIFF)Differential Input Impedance VINDIFF = 2 RINCMCM Input Impedance VCM = to 80V VCM = 5V to l5