ES51969

ES51969 6,600 Counts Auto DMM Features • 6,600 counts LCD display • 100L QFP package • 3V DC power supply • Conversion rate : 3 times/s • Full automatic measurement *Voltage measurement: 660.0mV – 1000V *Current measurement: μA/mA/A • Auto power off (30min/15min) • Sleep state indicative signal output • Re-power on • On-chip buzzer driver • Low battery detection for 3V or 9V battery Description • • • • • • • ES51969 is an integrated analog-to-digital converter (ADC) with 6,600 counts LCD *Resistance measurement: 660.0Ω – 66.00MΩ display, automatic range selection, and 3V DC *Capacitance measurement: power supply. Automatic range selection is 6.600nF – 66.00mF(6.6sec) provided for voltage (AC/DC) measurement, *Frequency counter: 660.0Hz – 66.00MHz resistance measurement, current measurement, Current modes for clamp meter with ZERO function capacitance measurement, and frequency Duty cycle measurement: 10.0% – 94.9% (0.66sec) counter. Expensive and bulky mechanical Diode measurement range switches are not required. Other features Continuity check include inrush function, relative value display, 4 ADP modes with external reference voltage and zero feature for DCA clampmeter, VAHZ independent “ADP” segment on LCD panel function, data holding, maximum and Temperature mode with internal scale translation 0 0 minimum value holding, duty cycle circuit from C to F measurement, diode measurement, temperature Push functions: measurement, continuity checking, low battery *KEY function detection, auto power off, re-power on, *Range change function backlight driver, buzzer driver and RS232 data *Inrush function: ACA for clampmeter only *Relative function output. *Zero function: DCA for clampmeter only *VAHz function *Data hold function *MAX/MIN function *Back light function • High crest factor signal detection • Band-gap reference voltage output • OL/UL state indicator in ADP modes. • CE selection (DC/AC 1010V, DC/AC 610V) • Serial data output (RS232 format) • LCD segment check when power on v2.6 1 08/10/06 ES51969 6,600 Counts Auto DMM Application Digital multimeter Clamp meter Thermometer Pin Assignment 80 75 70 65 60 55 VAHZ MAX/MIN VST OSC2 OSC1 BKOUT R_OVH ENIR ZERO BUZIN OR BUZOUT ANNUNC BP1 BP2 BP3 BP4 SEG01 SEG02 SEG03 SEG04 SEG05 SEG06 SEG07 SEG08 SEG09 SEG10 SEG11 SEG12 50 10 15 20 v2.6 V+ CREF+ CREFCINT CAZ BUFF RAZ IVSH IVSL OVX OHMC OVH OVSG OR1 VR5 VR4 VR3 VR2 TEST5 ACVL ACVH ADI ADO ADOHZ VRH VR VA+ VAADP 2 25 5 REL HOLD RANGE CESEL BKSET KEY SLACDC FC5 FC4 FC3 FC2 FC1 LBAT9 SDO CC+ VDGND AGND AGND 85 90 Cyrustek. com.tw 45 40 95 ES51969 35 100 SEG14 SEG15 SEG16 SEG17 APOSEL BKLIT DSHIFT RS232 FREQ SLEEP OHMC2 CSHCSH+ CA+ CAR1K R9K VBAR VR1 OHMC1 08/10/06 ES51969 6,600 Counts Auto DMM Pin Description Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 v2.6 Symbol V+ CREF+ CREFCINT CAZ BUFF RAZ IVSH IVSL OVX OHMC OVH OVSG OR1 VR5 VR4 VR3 VR2 TEST5 ACVL ACVH ADI ADO ADOHZ VRH VR VA+ VAADP SGND OHMC1 VR1 VBAR R9K R1K CACA+ CSH+ CSHOHMC2 SLEEP FREQ RS232 DSHIFT BKLIT Type O I/O I/O O I O O I I I O I I O O O O O I/O O O I O I O I I I I G O I I O O I/O I/O O O O O I I I I Description Output of on-chip DC-DC converter. Positive connection for reference capacitor. Negative connection for reference capacitor. Integrator output. Connect to integral capacitor Auto-zero capacitor connection. Buffer output pin. Connect to integral resistor Buffer output pin in high-speed mode. Connect to high-speed integral resistor. High current measurement input. Low current measurement input Input high voltage for resistance measurement Filter capacitor connection for resistance mode below 6.600MΩ range. Output connection for resistance measurement Sense low voltage for resistance measurement Reference resistor connection for 660.0Ω range Voltage measurement ÷10000 attenuator(1000V) Voltage measurement ÷1000 attenuator(660.0V) Voltage measurement ÷100 attenuator(66.00V) Voltage measurement ÷10 attenuator(6.600V) Test pin DC signal low input in ACV/ACA mode. Connect to negative output of external AC to DC converter. DC signal high input in ACV/ACA mode. Connect to positive output of external AC to DC converter. Negative input of internal AC to DC OP Amp. Output of internal AC to DC OP Amp. Frequency input under voltage/current mode, offset to AGND. Output of band-gap voltage reference. Typically –1.2V Reference input voltage connection. Typically –400mV For ADP mode. De-integrating voltage positive input. The input should be higher than VA-. For ADP mode. De-integrating voltage negative input. The input should be lower than VA+. Measurement input in ADP mode. Signal Ground. Filter capacitor connection for resistance mode under 660.0KΩ range. Measurement input. In capacitance mode, a compensation capacitor is connected. In temperature mode, it is used to control decimal point. In µA or mA modes, pull to V- to disable the ‘µ2’ or ‘m2’ sign on LCD. Connect to a precise 9KΩ resister. Connect to a precise 1KΩ resister. Negative auto-zero capacitor connection for capacitor measurement Positive auto-zero capacitor connection for capacitor measurement Positive connection to external capacitor. Negative connection to external capacitor. Filter capacitor connection for 6.600MΩ range in resistance mode. Sleep mode indicator, asserts low in SLEEP mode. Frequency counter input, offset V-/2 internally by the chip. Assert low to enable serial data output. Pull to V- to have 0.01MΩ resolution in 66.00MΩ. Pull to DGND or keep it float will change the resolution to 0.1MΩ. Back light function. Pulse low to set BKOUT pin output. 3 08/10/06 ES51969 6,600 Counts Auto DMM 46 APOSEL 47 - 63 SEG17 – SEG01 64 BP4 65 BP3 66 BP2 67 BP1 68 ANNUNC Auto power off idle time selection. LCD segment line 01 – 17 LCD backplane 4 LCD backplane 3 LCD backplane 2 LCD backplane 1 Square wave output at the backplane frequency, synchronized to BP1. ANNUNC can be used to control display annunciator. Connect a LCD segment to ANNUNC to turn it on; connect an LCD segment to its backplane to turn it off. O Outputs a 2KHz audio frequency signal for driving piezoelectric buzzer when BUZIN is low. O OL/UL state indicator in ADP modes. Origin state is low(V-), it goes to high(DGND) only when the reading is over 6,600 counts. It comes back to low only when the reading is less than 600 counts. It will keep the state when the reading is between 600 and 6600 counts. I Pull to V- to enable the BUZOUT. I Pulse to V- to enable ZERO function. I Pull to V- to enable the INRUSH function. I Pull to V- to allow protection resistance increasing at OVH path O If BKLIT function is enabled, this pin will change from –3V to +3V for 60 sec, once press BKLIT pin again within 60 sec, this pin will change back to –3V. I Crystal oscillator input connection O Crystal oscillator output connection I Set to V- to enable the auto range voltage mode to start from 660.0V range. I Pulse to V- to enable MAX/MIN function. I Pulse to V- to enable VAHZ mode. I Pulse to V- to enable Relative function. I Pulse to V- to enable HOLD function. I Pulse to V- to enable manual mode and manual range selection. I CE selection feature control pin. I Set to V- to change the backligh idle time from 60 sec. to 180 sec. I Pulse to V- to change mode. In ADP mode, if this pin is connected to V-, the buzzer output will be off when the ADP input overflows. In ACA modes for Clampmeter (FC5=low), pulse low to V- could enable Inrush function. I Select initial state. Please refer to page 14 I Switch 5 for function selection. I Switch 4 for function selection. I Switch 3 for function selection. I Switch 2 for function selection. I Switch 1 for function selection. I Low battery configuration. If 3V battery is used, connect it to AGND. The default low-battery threshold voltage is –2.3V. If 9V battery is used, the low battery annunciator is displayed when the voltage of this pin is less than VRH (-1.2V) O RS232 compliant serial data output. O Positive capacitor connection for on-chip DC-DC converter. O Negative capacitor connection for on-chip DC-DC converter. P Negative supply voltage. Connecting to battery negative terminal. P/G Digital ground. Connecting to battery positive terminal. P/G Analog ground. I O O O O O O 69 70 BUZOUT OR 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 BUZIN ZERO ENIR R_OVH BKOUT OSC1 OSC2 VST MAXMIN VAHZ REL HOLD RANGE CESEL BKSET KEY 87 88 89 90 91 92 93 SLACDC FC5 FC4 FC3 FC2 FC1 LBAT9 94 95 96 97 98 99 - 100 SDO C+ CVDGND AGND v2.6 4 08/10/06 ES51969 6,600 Counts Auto DMM Absolute Maximum Ratings Characteristic Supply Voltage (V- to AGND) Analog Input Voltage V+ AGND/DGND Digital Input Power Dissipation. Flat Package Operating Temperature Storage Temperature Rating -4V V- -0.6 to V+ +0.6 V+ ≥ (AGND/DGND+0.5V) AGND/DGND ≥ (V- -0.5V) V- -0.6 to DGND +0.6 500mW 0℃ to 70℃ -25℃ to 125℃ Electrical Characteristics TA=25℃, V- = -3V Parameter Power supply Operating supply current In DCV mode Voltage roll-over error Voltage nonlinearity Input Leakage Low battery flag voltage Zero input reading Reference voltage and open circuit voltage for 660Ω measurement Peak to peak backplane drive voltage Counter time base period Open circuit voltage for Ω measurement (except 660Ω) Symbol Test Condition VIDD Normal operation In sleep mode ISS REV 10MΩ input resistor NLV Best case straight line V- to AGND 10MΩ input resistor 100KΩ resistor between VRH and AGND -3.5V≤ V ≤-2.2V fOSC = 4MHZ Ω and Continuity Mode Between V- pin and HOLD, RANGE, KEY, FC1, FC2, FC3, FC4, FC5, BKLIT,MAXMIN Between V- pin and RS232 Between GND Pin and SLACDC ±1% ±5% 100KΩ resister Between VRH 0℃1 sec 1 push>1 sec “MAX” active 1push 1s Push Zero < 1s ‘Zero’ ‘Max’ Active Show Max. DN+K - DN Push Max/Min Push HOLD ‘Zero’ ‘Min’ Active Show Min. DN+K - DN 〝Zero〞 Max〞 Min〞 〝 〝 blink. Current DN+K - DN Push Max/Min Push HOLD Push HOLD 〝Zero〞 Max〞 Min〞 〝 , 〝 , , ‘Zero’ ‘Min’ ‘Hold’ ‘Zero’ ‘Max’ ‘Hold’ 〝H〞blink. Hold the active Hold Min. active Hold Max. Push Max/Min Push Max/Min DN+K - DN Value current DN+K - DN DN+K - DN Value Push Max/Min v2.6 22 08/10/06 ES51969 6,600 Counts Auto DMM 4. Serial Data Output The RS232 function will be activated if the RS232 pin is pulled to and asserts at V-. The serial data sent to SDO pin once every A/D conversion cycle. The data format complies with JIS 7Bits transmission code with a baud rate of 19230. The host can use RS232 interface to read the data. A single data packet includes a start bit (always 0), 7 data bits, an odd parity check bit, and a stop bit (always 1). The high and low voltage levels correspond to DGND and V- respectively. SDO remains at 1 (high) when it is inactive. Hence the start bit (0) could be used as the triggering signal to begin the reading process. The following figure shows the data format of a single packet. The LSB is sent first and the MSB is sent last. single package 0V -3V 0 LSB D0 ~D6 p P1 MSB One data block consists of 11 packets, or 110 bits. The following figure shows the format of a data block. The range packet indicates the full scale range of the meter. Digit 3 through digit 0 are just the digits on the LCD panel. The function packet indicates the measurement mode of the meter. Status, option 1 and option 2 give the status of the meter. CR and LF are delimiters used to separate the blocks. all package 0 range 0 digit1 0 status p10 digit3 p10 digit0 p10 option1 p10 digit2 p10 function p10 option2 p1 p1 p1 0 CR v2.6 p10 LF 23 p1 The meter always outputs the current input value to the serial port in spite of HOLD 08/10/06 ES51969 6,600 Counts Auto DMM mode. Each block is repeated twice in one conversion cycle. The detailed data format of each packet is listed below. 4.1 FUNCTUON This packet indicates the measurement mode of the meter. The following table summarizes the transmitted code for each mode. Note that the encoding of this packet is different from the encoding of FC1-FC5 switch. Code 0111011 3 0111101 3 0111111 0110000 0111001 0110011 0110101 0110001 0110010 0110110 0110100 0111110 1 Measurement Mode Voltage Auto µA Current Auto mA Current 66 A current Manual A Current Ω Continuity Diode Frequency Capacitance 2 Temperature 1 ADP/Duty VBAR=0 Don’t care Auto µA Current Auto mA Current VBAR=1 Auto 660.0A/6600A Auto 66.00A/660.0A Don’t care When the function code = 0111110, the measurement mode is determined by judge bit of Status packet. When the function code = 0110100, the judge bit in the Status packet determines whether the unit is When the function code = 0111101 or 0111111, the measurement mode is determined by VBAR bit of If judge bit is 1, it means duty cycle mode. If judge bit is 0, it means ADP mode. 2 Celsius or Fahrenheit. 3 OPTION1 packet. 4.2 RANGE This packet indicates the full-scale range of the meter. When the meter operates in continuity mode or diode mode, this packet is always 0110000 since the full-scale ranges in these modes are fixed. The following table lists the code for each range in each measurement mode. Ω Code V *2-range auto V/A 66 A Manual A ADP Frequency Capacitor 0110000 6.600V Lower Range(IVSL) 66.00 A 6.600A ADP3 660.0Ω 660.0Hz 6.600nF 0110001 66.00V Higher Range(IVSH) 66.00A ADP2 6.600KΩ 66.00nF 0110010 660.0V 660.0A ADP1 66.00KΩ 6.600KHz 660.0nF 0110011 1000V 6600A ADP0 660.0KΩ 66.00KHz 6.600µF 0110100 660.0mV 6.600MΩ 660.0KHz 66.00µF 0110101 66.00MΩ 6.600MHz 660.0µF 0110110 66.00MHz 6.600mF 0110111 66.00mF *It includes auto µA, mA, 66.00V/660.0V, 660.0V/1000V, 66.00A/660.0A, 660.0A/6000A. v2.6 24 08/10/06 ES51969 6,600 Counts Auto DMM 4.3 DIGIT 3 – DIGIT 0 Digit 3 is the most significant digit on the LCD panel, and digit 0 is the least significant digit. Digit 0 1 2 3 4 5 6 7 8 9 Code 0110000 0110001 0110010 0110011 0110100 0110101 0110110 0110111 0111000 0111001 Note: Because the cycle time of measurement for continuity/diode mode is only 82.5ms, the least significant digit may not be accurate 4.4 STATUS The format of this package shown below. In Temperature mode, judge is 1 if the unit is °C and is 0 if the unit is °F. In ACA modes for clampmeter, the judge bit is 1 when the INRUSH function is activated. Sign field indicates whether the minus sign on the LCD panel is on or off. BATT field is one when battery low condition is true. OL indicates input overflow. In VAHz mode, the judge is 1 if the duty cycle mode is active. 0 BIT6 1 BIT 5 1 BIT 4 Judge BIT 3 Sign BIT 2 BATT BIT1 OL BIT 0 4.5 OPTION 1 0 BIT 6 1 BIT 5 1 BIT 4 UL BIT 3 0 BIT 2 VBAR BIT1 0 BIT 0 The UL bit will be 1 only in following conditions: 1. The reading is less than 10.0Hz(LCD shows UL) in FR1 range of frequency mode. 2. The input frequency is less than 10.0Hz or the duty cycle value is less than 10.0% in duty cycle measurement mode. The VBAR bit will be 1, when the VBAR pin is connected to V-. v2.6 25 08/10/06 ES51969 6,600 Counts Auto DMM 4.6 OPTION 2 This packet contains information on the operation mode of the meter. The format is shown below. The DC field indicates that the meter operates in DC measurement mode, either voltage or current. The AC field indicates that the meter operates in AC measurement mode, either voltage or current. The AUTO field is set to one if the meter operates in automatic mode, and is set to zero when the meter operates in manual mode. 0 BIT 6 1 BIT 5 1 BIT 4 DC BIT 3 AC BIT 2 AUTO BIT 1 VAHZ BIT 0 4.7 CR Carriage return. The transmitted code is 0001101. 4.8 LF Line feed. The transmitted code is 0001010. 5. Miscellaneous The conditions, which the meter turns on the buzzer, include: (1) Changing measurement mode generates one beep. (2) Pressing any of the push functions generates one beep, if the function is valid. (3) Power on and re-power on generate one beep. (4) Input overflow in voltage and current mode generates one beep every 0.3 seconds (or 3.33 beeps per second.) (5) Continuity(diode) check generates a continuous 2KHz beep whenever the measurement is less then 30Ω(30mV) (6) Auto power off generates a 2KHz beep which lasts for 1.5 seconds. The following figures show the output waveform from the BUZOUT pin. 0.5 mS (a) Continuous 2KHz beep 0.15 sec 0.3 sec (b) 3.33 beep/sec v2.6 26 08/10/06 ES51969 6,600 Counts Auto DMM 5.1 LCD Panel S17 S1 S2 S3 S4 S5 S6 S9 S7 S8 S15 S10 S11 S12 S16 S13 S14 AUTO MANU HOLD INRUSH REL MAX MIN ZERO BP1 ADP0 APO AC BP2 ADP1 DC BP3 ADP2 BATT BP4 ADP3 RS232 BP1 BP2 BP3 BP4 BP1 BP2 BP3 BP4 % ℃℉ µ2 m2 V A n µ1 m1 F M K Ω Hz SEG01 SEG02 SEG03 SEG04 SEG05 SEG06 SEG07 SEG08 SEG09 APO AUTO A4 MANU A3 HOLD INRUSH AC F4 B4 F3 B3 F2 A2 B2 BATT DC E4 G4 E3 G3 E2 G2 C2 RS232 DP3 D4 C4 D3 C3 DP2 D2 DP1 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 A1 F1 E1 D1 B1 G1 C1 ℃ ℉ % µ2 m2 V A M K Ω Hz REL MAX MIN ZERO n µ1 m1 F ADP0 ADP1 ADP2 ADP3 LCD Backplane Waveform V- +3.2 V- +3.1 V- V- V- +3.2 V- +3.1 V- V- V- +3.2 V- +3.1 VV- +3.2 VV- +3.2 V- v2.6 27 08/10/06 ES51969 6,600 Counts Auto DMM 5.2 LCD display on condition LCD Annunciator V A Ω F % Hz ADP1 ADP2 ADP3 ADP4 DC AC AUTO MANU HOLD REL Max / Min ZERO INRUSH m1 Condition In voltage measurement mode, and diode measurement mode. In current measurement mode. In resistance measurement mode, and continuity mode. In capacitance measurement mode. In continuity check mode. In diode mode. In duty cycle measurement. In frequency mode. In ADP1 mode In ADP2 mode In ADP3 mode In ADP4 mode In DC voltage or DC current mode. In AC voltage or AC current mode. When automatic full scale range selection is enabled. In manual mode. When HOLD function is enabled. When Relative function is enabled. When Max or Min function is enabled. When ZERO function is enabled. When INRUSH function is enabled. In capacitor measurement mode and the full scale range is in the order of mF. In capacitor measurement mode and the full scale range is in the order of uF. In capacitor measurement mode and the full scale range is in the order of nF. In voltage or current measurement mode and the full scale range is in the order of 10-3. In current measurement mode and the full scale range id in the order of uA. In resistance measurement mode and the full scale range is in the order of MΩ In resistance measurement mode and the full scale range is in the order of KΩ In temperature measurement mode and when the unit is ℃ In temperature measurement mode and when the unit is ℉ When auto power off function is enabled. When RS232 output is enabled. µ1 n m2 µ2 M K ℃ ℉ APO RS232 5.3 Operating Timing ES51969 incorporates a dual slope ADC with four phases: ZI, AZ, INT and DINT. The timing of each phase are listed below. *Voltage / Ohm /ADP / Manual Current (for clampmeter) measurement: Phase ZI AZ INT DINT Time 40ms 25ms 100ms 165ms P.S. In the DC voltage and ohm measurement with auto mode, if the range is changed, the internal clock rate will increase four times and the new measurement cycle becomes 1/4 times of the original cycle until the range is stable. *Current mode for multimeter / Auto Current mode for clampmeter / 2-range auto v2.6 28 08/10/06 ES51969 6,600 Counts Auto DMM voltage mode Phase ZI AZ INT DINT *Continuity/Diode measurement Phase ZI AZ INT DINT *Capacitance measurement: Range 6.600nF 66.00nF 660.0nF 6.600μF 66.00μF 660.0μF 6.600mF 66.00mF Total Measurement Time 0.33sec 0.33sec 0.33sec 0.33sec 0.66sec 1.32sec 1.32sec 6.6sec Time 10ms 6.25ms 25ms 41.25ms Time 40ms 25ms 100ms 82.5ms *Duty cycle measurement Every conversion takes 0.66 second. *Frequency measurement In 660.0Hz range, the measurement cycle = 0.25 ~ 0.5 sec In range 6.6KHz~66MHz, the measurement cycle = 1.05 sec P.S. In the frequency measurement with auto mode, if the range is changed, the internal clock rate will increase ten times and the new measurement cycle becomes 1/10 times of the original cycle until the range is stable. v2.6 29 08/10/06 ES51969 6,600 Counts Auto DMM 6. Test Circuit 1. Voltage test AGND OVSG 99.5 1K 10K 101K 1.111M D2 D1 1.0u 15K 10K 15K 0.47u 1.0u 0.1u 88M OR1 VR5 VR4 VR3 VR2 ADO ADI ACVL ACVH TEST5 A mA uA V R 1 10M -400mV Voltage input 100 Z1 6V Z2 PTC 1.5K VR1 10M 47n 300p PTC 1.5K 100 Z1 6V Z2 99.5 1K 10K 101K 1.111M 330n 220n OVX OHMC OHMC1 OHMC2 OVH OVSG OR1 VR5 VR4 VR3 VR2 SGND AGND 0V OVSG 1.111M VR2 V R 450 0.005 0.495 4.5 45 10A mA mA uA uA 100K 100K IVSH IVSL 4. Current test AGND SGND 10K 5. Diode test AGND OVH 2. Resistor test 6. Low battery 9V BA TT 270K 680K LBAT9 0.1u AGND V- 3. Current test for clamp meter 7. ADP test VA+ -400mV VAADP 100K SGND AGND 8. Frequency test F R E Q RL VR R 100K ADP SGND AGND VA+ VA- ADPin+ ADPin- 200 2.2u PTC 1.5K Fin + Vref v2.6 30 08/10/06 ES51969 6,600 Counts Auto DMM 7. Application Circuit 7.5V ZI + 10μ 0.1μ 5.6V ZI 3V + 10μ 0.1μ C+ V0.47μ V- DGND AGND AGND (100) REL HOLD RANGE CESEL BKSET (85) KEY SLACDC FC5 FC4 FC3 (90) FC2 FC1 LBAT9 SDO C- (95) μA mA 450 45 μA μA mA 0.1μ V+ CREF+ 10A R C 220n 220n mA 450k 4.5 150k 0.495 10A 100K 100K 0.005 100K 47n 300p 1.5K 100 PTC 99.5 1K 10K 101K 10K 1.111M 10K 0.1μ 1μ + D1 1 5K 1 μ + 88M D2 0.47μ CREFCINT CAZ (5) BUFF RAZ IVSH IVSL OVX (10) OHMC OVH OVSG OR1 VR5 (15) VR4 VR3 VR2 TEST5 ACVL (20) ACVH ADI ADO 15K ADOHZ 55K 10K 1μ + 27K VRH (25) VR VA+ VAADP SGND (30) (80) VAHZ MAX/MIN VST OSC2 OSC1 (75) BKOUT R_OVH ENIR ZERO BUZIN (70) OR BUZOUT ANNUNC BP1 BP2 (65) BP3 BP4 SEG01 SEG02 SEG03 (60) SEG04 SEG05 SEG06 SEG07 SEG08 (55) SEG09 SEG10 SEG11 SEG12 SEG13 4M ES51969 220n 100K Cp 9K 200 220n 1K 2.2μ 1.5K PTC 10M + 5.6V V- LCD display ... (50) SEG14 SEG15 SEG16 SEG17 APOSEL (45) BKLIT DSHIFT RS232 FREQ SLEEP (40) OHMC2 CSH- 22n CSH+ CA+ 470n CA(35) R1K R9K 330n Notes: Fin 1. Most of pins are protected by the ESD protection circuits. However pins, V+, V-, AGND, DGND and VR1 are not protected enough because the parasitic effect must be decrease. Therefore enough external protection is needed for assembling, carrying and keeping. In addition, components connecting to these unprotected pins have to be soldered on board before the chip is soldered. 2. All the zener diodes above are used for IC protection. These protection are needed and these zener diodes must be soldered on PCB first before soldering ES51969 on. 3. Cp is the compensation capacitor for measuring capacitance. Its value depends on the parasitic capacitor on the PCB. (The recommended value is not less than the filter capacitor applied at OVX) 4. The capacitance value marked in red means that these capacitors must have good stability and low leakage current, for example, the MKT type or even better quality ones. v2.6 31 08/10/06 VBAR VR1 OHMC1 V1815 C ES51969 6,600 Counts Auto DMM 8. Package 1 100 Pin QFP Package W A L b a θ B C D d 2 Dimension Paramenters Symbol W L A B C d a D θ Min. Milimeter Typ. Max. Min. Mill Typ. 787.4 551.2 16.7 11.8 25.6 47.2 107.1 98.4 Max. 791.3 551.2 11.8 47.2 107.1 19.90 20.00 20.10 783.5 13.90 14.00 14.10 547.2 0.425 0.20 0.30 0.40 7.9 0.65 1.05 1.20 1.35 41.3 2.57 2.72 2.87 101.2 2.50 o 0 10o v2.6 32 08/10/06