HT82V842A 10-Bit 20MSPS CCD Analog Signal Processor Features · Operating voltage: 2.7V~3.6V · Independent ADC input conversion clock and data output clock · Low power consumption: 70mW (Typ.) · Independent CDS and PGA gain control · Power down mode: less than 30mW - CDS: -1.94/0/6/12dB - PGA: 0~24dB · Accepts a direct signal input to ADC or PGA at 1.0 VPP (Typ.) · Wide gain range: -1.94~36dB · CCD signal input level: 1.1 VP-P (Max.) · High speed sample and hold circuit: pulse width 11ns · 10-bit ADC (up to 20MHz) (Min.) - DNL: ±0.6 LSB (Typ.) · 48-pin LQFP package · Black level neutralizer, target setting: 16~127LSB · Built-in serial interface General Description The HT82V842A is a CMOS single-chip signal processing device for CCD area sensors. It consists of a clamp circuit, Correlated Double Sampler (CDS), Programmable Gain Amplifier (PGA), reference voltage generator, black level detection circuit, 20MHz 10-bit A/D converter (ADC), timing generator for internally required pulses, serial interface for internal function control and PGA gain control. Block Diagram O B P A D C K A D C L P /C C D C L P C S S C K S D A T A T im in g G e n e ra to r B L K M O N O U T S e r ia l R e g is te r B a n d G a p C ir c u it C L P C A P D C C la m p C C D C L P R E F IN P G A R o u g h C D S P G A F in e S /H C C D IN C C D V R P V C O M V R N A D C L P 0 /6 /1 2 /1 8 d B -1 .9 4 /0 /6 /1 2 d B 0 ~ 6 d B (0 .0 4 7 d B /S te p ) 1 0 - B it A D C D O 0 ~ D O 9 A D IN D A C O B C A P O B P V Rev. 1.00 D D V C o m p a re B la c k L e v e l R e g is te r R E S E T S T B Y S H R S S 1 S H D O U T C K January 2, 2006 HT82V842A Pin Assignment D O 0 D O 1 D O 2 D O 3 D O 4 V S S V D D D O 5 D O 6 D O 7 D O 8 D O 9 N C V D D N C V R N V R P V D D V D D V S S V S S V C O M C C D IN R E F IN 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 1 2 3 6 O U R E V D V S S T C S S D S C O B N C B L A D 3 5 3 3 4 4 3 3 5 3 2 H T 8 2 V 8 4 2 A 4 8 L Q F P -A 6 7 8 3 1 3 0 2 9 9 2 8 1 0 2 7 1 1 2 6 1 2 2 5 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 T C K S E T D S B Y A T A K K P C L P /C C D C L P S H S H A D N C V S V D N C N C M O O B A D C L S D D R C K N O U T C A P IN P C A P Pin Description Pin No. Pin Name I/O Description ¾ No connection 2, 6~7, 19, 34, 43 VDD ¾ Positive power supply for analog circuit 4 VRN O Negative reference voltage for internal ADC Connect to VSS via 0.1mF 5 VRP O Positive reference voltage for internal ADC Connect to VSS via 0.1mF 8~9, 20, 33, 42 VSS ¾ Negative power supply for analog circuit 10 VCOM O Common reference voltage for internal ADC 11 CCDIN I CDS circuit data input 12 REFIN I CDS circuit reference input 13 CLPCAP O Clamp level output Connect to VSS via 0.1mF 14 ADIN I ADIN signal input 15 OBCAP O Black level integration voltage Connect to VSS via 0.1mF~1mF (by applications) 16 MONOUT O Monitor output of CDS or PGA 22 ADCK I ADC sampling clock input 23 SHR I Reference sampling pulse input 24 SHD I Data sampling pulse input 25 ADCLP/CCDCLP I Pulse input for ADIN clamp and black calibration control. Clamp control input. 26 BLK I Blanking pulse input 27 NC ¾ 28 OBP I Black level period pulse input 29 SCK I Serial clock input 30 SDATA I Serial data input 1, 3, 17~18, 21 Rev. 1.00 NC No connection 2 January 2, 2006 HT82V842A Pin No. Pin Name I/O Description 31 CS I Serial port chip selection (Active at low) 32 STBY I Power down control (Active low) 35 RESET I Reset signal (Active low) 36 OUTCK I Clock source for ADC output 37~41, 44~48 DO0~DO9 O Digital output from ADC Absolute Maximum Ratings Supply Voltage .........................GND-0.3V to GND+6V Storage Temperature ...........................-55°C to 150°C Input Voltage .............................VSS-0.3V to VDD+0.3V Operating Temperature ..........................-20°C to 70°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. D.C. Characteristics Symbol Ta=25°C Parameter Test Conditions VDD Conditions Min. Typ. Max. Unit VIH High Level Input Voltage 3V ¾ 0.7VDD ¾ VDD V VIL Low Level Input Voltage 3V ¾ 0 ¾ 0.3VDD V IIH High Level Input Current 3V VIL=0V ¾ ¾ 200 mA IIL Low Level Input Current 3V VIH=3.0V ¾ ¾ 1 mA IMD Operation Current at Monitor Disable 3V fS=20MHz ¾ 23 ¾ mA IMA Supply Current at Monitor Active 3V fS=20MHz ¾ 26 ¾ mA ISS Power Down Current 3V ¾ ¾ 10 mA VCCDIN 3V CCDIN input, fIN=1MHz ¾ 1.1 ¾ VP-P 3V ADIN input, fIN=1MHz ¾ 1.0 ¾ VP-P Analog Input Range VADIN ¾ VCLPCAP Clamp Voltage 3V ¾ 1.5 1.7 1.9 V tBLKCAL Black Calibration Time 3V ¾ ¾ ¾ 200 Pixel VBLKCAL Maximum Calibration Offset Voltage 3V ¾ ¾ ±200 ¾ mV G (0) CDS Gain (Set 0 dB) 3V Absolute gain -2 -1 0 dB G (1) CDS Gain (Set 6.02 dB) 3V 5.52 6.02 6.52 dB G (2) CDS Gain (Set 12.04 dB) 3V Relative gain 11.54 12.04 12.04 dB G (3) CDS Gain (Set -1.94 dB) 3V -2.44 -1.94 -1.44 dB Gmin PGA Gain (Minimum Gain) 3V -1.2 -0.2 0.8 dB Gmax PGA Gain (Maximum Gain) 3V 22.906 23.906 24.906 dB 0 0.047 0.094 dB Absolute gain Relative gain Gstep PGA Gain (Gain Step) 3V ERPA Total (CDS+PGA) Gain Monotony 3V ¾ ¾ ¾ ±4 LSB RES Resolution 3V ¾ ¾ ¾ 10 Bits Rev. 1.00 3 January 2, 2006 HT82V842A Symbol Test Conditions Parameter VDD Conditions fS=20MHz Min. Typ. Max. Unit ¾ ±0.6 ±1.0 LSB DNL Differential Nonlinearity 3V SN S/N 3V ¾ ¾ 58 ¾ dB SND S/(N+D) 3V ¾ ¾ 56 ¾ dB VCOM ADC Common Voltage 3V ¾ 1.25 1.4 1.55 V VRP VRP Voltage (Positive) 3V ¾ 1.55 1.65 1.75 V VRN VRN Voltage (Negative) 3V ¾ 1.05 1.15 1.25 V CCAL ¾ 127 LSB 3V ¾ 16 ADC Output Black Level Calibration Code 1 ¾ 127 LSB ¾ 1 ¾ LSB STCAL Note: Calibration Code Resolution ¾ 3V Black calibration period is specified when CCAL is from 16 to 127LSB. Although black level codes of 1 to 15 could be set, tBLKCAL is not guaranteed for these codes. A.C. Characteristics Symbol Parameter VSS=0V, Ta=25°C Test Conditions VDD Conditions Min. Typ. Max. Unit fS Conversion Frequency 3.0V ¾ 0.5 ¾ 20 MHz tCYC Clock Cycle Time 3.0V ¾ 50 ¾ ¾ ns tR Clock Rising Time 3.0V ¾ ¾ ¾ 2 ns tF Clock Falling Time 3.0V ¾ ¾ ¾ 2 ns tL Clock Low Period 3.0V ¾ 23 ¾ ¾ ns tH Clock High Period 3.0V ¾ 23 ¾ ¾ ns tWR SHR Pulse Width 3.0V ¾ 11 ¾ ¾ ns tWD SHD Pulse Width 3.0V ¾ 11 ¾ ¾ ns tDR SHR Sampling Aperture 3.0V ¾ ¾ ¾ 4 ns tDD SHD Sampling Aperture 3.0V ¾ ¾ ¾ 4 ns tPSUP Data Pulse Setup 3.0V ¾ 2 ¾ ¾ ns tHOLD Data Pulse Hold 3.0V ¾ 5 ¾ ¾ ns tSP Sampling Pulse Non-overlay 3.0V ¾ 1 ¾ ¾ ns tSUPE Enable Pulse Setup 3.0V ¾ 10 ¾ ¾ ns tHOLDE Enable Pulse Hold 3.0V ¾ 10 ¾ ¾ ns tSUPOC OUTCK Setup 3.0V ¾ 0 ¾ ¾ ns tHOLDOC OUTCK Hold 3.0V ¾ 10 ¾ ¾ ns tDLD 3-state Disable Delay 3.0V Active ® High-Z ¾ 20 ¾ ns tDLE 3-state Disable Delay 3.0V High-Z® Active ¾ 20 ¾ ns tOL ADC Output Data Delay 3.0V ¾ 18 ¾ ns Rev. 1.00 ¾ 4 January 2, 2006 HT82V842A Functional Description ¨ CDS (Correlated Double Sampling) Circuit Connect the CCDIN pin to the CCD sensor thru a capacitor. Connect also the REFIN pin to VSS thru a capacitor. The CDS circuit holds the pre-charge voltage of the CCD at SHR pulse and do sampling of the CCD pixel data at SHD pulse. Correlated noise is removed by subtracting the pre-charge voltage from the pixel data level. CDS could choose a gain setting from 0, 6.02, 12 or -1.94dB (Mode 3, register D4 and D5 bits). A CDS gain is controlled by PGA gain. It is recommended to increase the CDS gain then increase the PGA gain to reduce the noise level. Clamp target (Mode 2 register D5 and D4), input signals (REFIN and CCDIN) to be clamped are selectable. The clamp function can be turned off. Black Level Cancel Circuit The purpose of a black level cancel circuit is to control the DC level of the PGA input. The ADC output code at an optical black period may correspond to the black level code set up by the register. A black level code of (1 to) 16 to 127 LSB is available (the default is 64 LSB). While the OBP pin is active a black level cancel loop is established. In the loop, a comparison is made between the ADC output code and the black level code, the result controls the voltage of the OBCAP capacitor. Hence, the OBCAP voltage settles gradually and the signal level of the optical black period corresponds to the established value. Clamp Circuits · DC clamp The DC level of the CCDIN/REFIN input is fixed by an internal DC clamp circuit. The DC level of the C-coupled CCD signal at the CDS input is set to CLPCAP by the internal DC clamp circuit. The clamp switches are usually turned on at the black level calibration period. The CLPCAP pin connects to VSS thru a 0.1mF capacitor. The following conditions will reset the OBCAP capacitor: · Set the black level reset register to ²1² (Mode 1 regis- ter D1=1). · Set the RESET pin to low · ADIN signal clamp · Power down by STBY pin or register control Clamp operation can also be used for the ADIN path. The clamp voltage is different from the CCDIN/REFIN signal and it could be turned off by register setting. At ²ADIN signal to ADC² mode, the ADCLP signal controls the ²clamp circuit². Black level calibration circuit is also controlled by ADCLP at ²ADIN signal to PGA² mode. The DC clamping (CCDCLP) is allowed while the OBP pin is low. The black level cancellation is available at ²ADIN signal to PGA² mode. The black level cancellation is available at the ADCLP period in this mode. The clamping function and black level canceling function are done simultaneously. · Clamp control ¨ Clamp current (Mode 2 register D7). Charge current can select normal or fast clamp. C C D O B E ffe c tiv e P ix e l B la n k in g A D C K B L K O B P C C D C L P O U T C K D O 0 ~ D O 9 Rev. 1.00 D a ta O u tp u t B la c k C o d e 5 January 2, 2006 HT82V842A E ffe c tiv e P ix e l S ig n a l B la n k in g E ffe c tiv e P ix e l S ig n a l B la n k in g O p tic a l B la c k P e r io d C C D A D C K O B P R e s u ltin g B la c k C a lib r a tio n L e v e l ( H o ld ) P r e v io u s B la c k L e v e l O B C A P Black Level Calibration Timing High-speed Black Level Cancellation gain (D3~D0=5¢b0). By setting the register D2~D0, the gain becomes high by 1 to 7 times that of the OBP pulse period after any access to the serial interface. After that period, the gain returns to low. When setting D3 to 1¢b1, the gain is always high. The CS signal becomes the starting point of the OBP pulse count. The HT82V842A has a high speed black level cancellation function, which by means of a register setting enhances the settling speed within a fixed period from access to the serial interface. It increases the gain of the setting DAC within a fixed period and in turn increases the charge/discharge current to the OBCAP capacitor. The following figure shows the black loop settling gain boost timing chart when the boost control is on (D3=²0²) and the boost period is set to 3. The Mode 3 register D3 to D0 data controls the black level boost function. The default setting is always low C S tS tH U C S C S O B P C o u n te r 0 B la c k lo o p g a in 1 2 3 H ig h g a in 3 L o w 0 g a in 1 2 0 1 2 H ig h g a in Black Loop Settling Gain Boost Timing Symbol Parameter Condition Min. Typ. Max. Unit tSUCS CS Setup Time ¾ 10 ¾ ¾ ns tHCS CS Hold Time ¾ 10 ¾ ¾ ns · The signal from the CCDIN input through a CDS and Gain Control Circuit PGA. The total gain for a CCD input signal covers from -1.94dB to 36dB. The CDS range is 0/6/12/-1.94 dB. The PGA rough is 0/6/12/18dB and ADC fine is 0 to 6dB, 0.047dB/step. The CDS gain is controlled by a 2-bit register and the PGA gain is controlled by a 9-bit register. · The signal from the ADIN input through an PGA at the ADIN mode. · The signal from the ADIN input at the ADIN mode. A/D Conversion Range The analog input range of the ADC is determined by the internal reference voltage. The full scale of the ADC is 1.0 VPP. A/D Converter Circuit The HT82V842A includes one 20MHz 10 bits AD converter. The ADC converts the following signals. Rev. 1.00 6 January 2, 2006 HT82V842A ing edge of the ADCK input after a 5.5 clock of pipeline delay. A/D Converter Output Code (Mode 1 Register D5=1) The format of an ADC digital output is a straight binary. When in the input zero reference voltage, the output code will be all zero and when the input is a full scale voltage, the output code will be all one. High-Z Control of ADC Digital Output ADC digital outputs become High-Z under the following conditions: Clock, Pipeline Delay, Digital Data Output Timing · Set the ADC output bit to one. (Mode 1 register D2=1) The ADCK input is used for an A/D conversion. The ADC input signal is sampled at the falling edge of the ADCK input and 10 bits parallel data is output at the ris- · Set the STBY pin to low · Set the power control bit to one (Mode 1 register D0=1) Digital Output Code A/D Input MSB LSB D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 1 1 1 1 1 1 1 1 1 1 : : : : : : : : : : : : 1 0 0 0 0 0 0 0 0 0 : 0 1 1 1 1 1 1 1 1 1 : : : : : : : : : : : Zero Scale 0 0 0 0 0 0 0 0 0 0 Full Scale ADC Data Output (Coding: Straight Binary) Polarity Inversion Miscellaneous Function (ADC Direct Input, ADIN Mode) The following input polarities can be inverted by register setting: The direct input path to the ADC or the PGA is achieved by means of a register setting. The selectable paths are as follows: · ADCK (A/D converter sampling clock, Mode 1 register D6) · Function disable (default, Mode 1 register D5=0, · SHR and SHD (CDS sampling clock, Mode 2 register D4=0) D3 and D2) · ADIN input to the PGA (Mode 1 register D5=0, D4=1) · BLK, OBP, CCDCLP and ADCLP (Mode 2 register D3 · ADIN input to the PGA (Mode 1 register D5=1, and D2) D4=Don¢t care) Data Output Clock The BLK, SHD and SHR inputs are ignored at the ADIN mode. The ADCK input or the OUTCK input is selectable as an ADC data output clock. Power Down Mode Serial Interface Circuit The power down mode can be set either by register setting or by the STBY pin. The internal registers of the HT82V842A are controlled by a 3-wire serial interface. The data is a 16-bit length serial data that consists of a 2-bit operation code, 4 bits address and 10 bits data. Each bit is fetched at the rising edge of the CS input. Keep CS to high when not access HT82V842A. It is prohibited to write to a non-defined address. When a data length is below 16 bits, the data is not executed. Monitor Output When setting Mode 2 (D1 and D0), the signal from MONOUT is selectable. The alternatives are OFF, CDS output, PGA output or REFIN/CCDIN output. The MONOUT pin gain is fixed to 0dB regardless of the gain control register setting when the CDS output is selected. The MONOUT level becomes VCOM at zero reference level. The signals are output in reverse for the CCD input. Rev. 1.00 Registers The HT82V842A has 10 bits´7 registers that control the operations. All registers are write only, the serial registers are written by the serial interface. 7 January 2, 2006 HT82V842A R/W Address Register Name Function Description A3 A2 A1 A0 W 0 0 0 0 Mode 1 DOUT timing control/OUTCK polarity/ADCK polarity/ADIN connection/ADC output/Black level reset/Power down W 0 0 0 1 Mode 2 Clamp current/ADIN clamp/Clamp target/S/H, enable logic/Monitor selection W 0 0 1 0 Mode 3/CDS gain CDS gain control/Black loop gain boost/Boost period W 0 0 1 1 PGA gain PGA gain W 0 1 0 0 Black level ADC code at black level (1 LSB step) Register Map Register Bit Assignment D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X 0 0 0 0 0 0 0 0 0 Mode 1 Default Functions Ö DOUT timing control Ö OUTCK polarity Ö ADCK polarity ADIN connection -----Ö Reserved Ö ADC output Ö Black level reset Ö Power down Mode 2 Default X X 0 0 0 0 0 0 0 0 Functions Ö Clamp current Ö ADIN clamp Clamp target ------ S/H, enable logic ------ Monitor selection ------ Mode 3 Default X X X X 0 0 0 0 0 0 Functions CDS gain control -----Ö Black loop gain boost Boost period --------------------------- PGA Gain Default X 0 0 0 0 0 0 0 0 0 Functions PGA gain ---------------------------------------------------------------------------------------------------- Black Level Default X X X 1 0 0 0 0 0 0 Functions Black level Rev. 1.00 ------------------------------------------------------------------------ 8 January 2, 2006 HT82V842A Register Operations Control Operations D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Mode 1 DOUT timing control OUTCK polarity 0 DOUT synchronizes to ADCK 1 DOUT synchronizes to OUTCK 0 DOUT changes at OUTCK rising edge 1 DOUT changes at OUTCK falling edge 0 ADCK polarity Normal operation as timing chart 1 ADIN connection ADCK clock inversion 0 0 ADIN function OFF 0 1 ADIN signal to PGA 1 x ADIN signal to ADC 0 Reserved Reserved 1 ADC output Reserved 0 Normal operation, ADC data output 1 ADC output high-Z, or logic of STBY 0 Black level reset 1 Normal operation Black level reset, or logic of RESET 0 Normal operation Power down 1 Power down, or logic of STBY Mode 2 Clamp current ADIN clamp Clamp target Normal clamp ±50mA 0 Fast clamp ±100mA 1 0 Clamp operation active for ADIN 1 No clamp for ADIN 0 0 Normal mode, clamp both REFIN and CCDIN 0 1 Clamp REFIN only 1 0 Clamp CCDIN only 1 1 S/H, enable logic Clamp off 0 0 Normal operation as timing chart 0 1 S/H control polarity inversion 1 0 Enable control polarity inversion 1 1 Both of S/H and enable inversion Monitor selection 0 0 Monitor off 0 1 CDS signal to monitor 1 0 PGA output monitor 1 1 Output REFIN and CCDIN Mode 3 CDS gain control Black loop gain boost Rev. 1.00 0 0 CDS gain=odB 0 1 CDS gain=6.02dB 1 0 CDS gain=12.04dB 1 1 CDS gain=-1.94dB 0 Boost control on 1 Always high gain 9 January 2, 2006 HT82V842A Control Operations D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Boost period 0 0 0 0 Always low gain 0 0 0 1 High gain for 1 OBP pulse 0 0 1 0 High gain for 2 OBP pulse 0 0 1 1 High gain for 3 OBP pulse 0 1 0 0 High gain for 4 OBP pulse 0 1 0 1 High gain for 5 OBP pulse 0 1 1 0 High gain for 6 OBP pulse 0 1 1 1 High gain for 7 OBP pulse Control Decimal D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0.046 0 0 0 0 0 0 0 0 1 0 2 2 0.093 0 0 0 0 0 0 0 0 1 1 3 3 0.142 0 0 0 0 0 0 0 1 0 0 4 4 0.187 ¯ ¯ ¯ 0 0 0 0 1 1 1 1 1 0 62 3E 2.915 0 0 0 0 1 1 1 1 1 1 63 3F 2.962 0 0 0 1 0 0 0 0 0 0 64 40 3.011 0 0 0 1 0 0 0 0 0 1 65 41 3.056 ¯ ¯ ¯ 0 0 0 1 1 1 1 1 1 1 127 7F 5.972 0 0 1 0 0 0 0 0 0 0 128 80 6.021 0 0 1 0 0 0 0 0 0 1 129 81 6.058 ¯ ¯ ¯ C0 9.031 ¯ ¯ ¯ ¯ 0 0 1 1 0 0 0 0 0 ¯ 0 192 ¯ 0 0 1 1 1 1 1 1 1 1 255 FF 11.994 0 1 0 0 0 0 0 0 0 0 256 100 12.041 0 1 0 0 0 0 0 0 0 1 257 101 12.087 0 1 0 1 0 0 0 0 0 0 320 ¯ ¯ ¯ ¯ ¯ ¯ 140 15.05 ¯ ¯ 0 1 0 1 1 1 1 1 1 1 383 17F 18.14 0 1 1 0 0 0 0 0 0 0 384 180 18.061 0 1 1 0 0 0 0 0 0 1 385 181 18.108 0 1 1 1 0 0 0 0 0 0 448 0 1 1 1 1 1 1 1 1 0 510 0 1 1 1 1 1 1 1 1 1 511 1FF 24.032 ¯ ¯ ¯ Rev. 1.00 PGA Gain (dB) 0 ¯ PGA gain HEX ¯ 10 ¯ ¯ 1C0 21.071 ¯ ¯ 1FE 23.987 January 2, 2006 HT82V842A Operation, ADC Code Black Code D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Decimal HEX 0 0 0 0 0 0 0 Forbidden Forbidden 0 0 0 0 0 0 1 1 1 ¯ ¯ ¯ 0 0 0 1 1 1 1 15 F 0 0 1 0 0 0 0 16 10 0 0 1 0 0 0 1 17 11 0 0 1 0 0 1 0 18 12 0 0 1 0 0 1 1 19 13 ¯ Black level 0 1 0 0 ¯ 0 0 0 32 ¯ 1 0 0 1 1 1 1 1 1 1 0 ¯ 20 ¯ ¯ 0 0 0 64 1 1 0 0 124 7C 1 1 1 0 1 125 7D 1 1 1 1 1 0 126 7E 1 1 1 1 1 1 127 7F ¯ 40 ¯ ¯ Timing Diagrams tD tD R D C C D R e fe r e n c e S a m p lin g D a ta S a m p lin g tW R S H R tW D tP tS S U P P S H D tC tH Y C O L D A D C K B L O B C C D C L A D C L P tH K P P O L D E tH tH tS O L D C tL tS U P E U P O C O U T C K tO D O 0 Rev. 1.00 ~ D O L 9 11 January 2, 2006 HT82V842A AD Conversion Timing (at ADIN (ADC) Input Mode 1 Register D5=1) 0 .7 A V D D A D C K 0 .3 A V F a llin g E d g e N + 1 N + 6 N + 5 N + 4 N A D C In p u t D D S a m p lin g P o in t 0 .7 A V D D O U T C K 0 .3 A V tD D ig ita l O u tp u t N -6 N -2 N -5 D D L N -1 N ADC Direct Input Chart A D C K A D C K R is in g E d g e A D C K In p u t N + 1 tH N tS O L D C U P O C O U T C K S a m p lin g P o in t OUTCK Timing Chart ADCK Inversion Chart These figures are shown when the Mode 1 D8 bit is set to ²1², and an external clock is input to the OUTCK pin. When setting D8 bit to ²0², the ADCK is used as OUTCK. Note: At default condition in ADIN mode, data are sampled at the falling edge of the ADCK clock, and are output at the rising edge of the OUTCK clock. Set the ADCK polarity register to ²1² when the data are sampled and are output at the falling edge of the ADCK clock. The diagram on the upper portion of this page shows the default timing and the lower left figure shows the inverted timing. Delay from data sampling to data output ADCK normal: At Mode 1 register D6=0; 5.5 clk delay ADCK inversion: At Mode 1 register D6=1; 6.0 clk delay In ADIN input mode, the above mentioned register setting is available. At ADIN (PGA) input Mode 1 register D5=0 and D4=1, digital data output is delayed by 2 clks. ADCK Clock Waveform tH 0 .7 V D D 0 .3 V D D tR tL tF tC Rev. 1.00 12 Y C January 2, 2006 HT82V842A Control Interface Timing Symbol VSS=0V, Ta=25°C) Test Conditions Parameter VDD Conditions Min. Typ. Max. Unit SCYC SCK Clock Frequency 3.0V ¾ ¾ ¾ 10 MHz SLO SCK Clock Low Level Width 3.0V ¾ 40 ¾ ¾ ns SHI SCK Clock High Level Width 3.0V ¾ 40 ¾ ¾ ns SSU Data Setup Time Period 3.0V ¾ 20 ¾ ¾ ns SH Data hold Time Period 3.0V ¾ 20 ¾ ¾ ns SR SCK, CS Rising Time Period 3.0V 30%®70% ¾ ¾ 6 ns SF SCK, CS Falling Time Period 3.0V 70%®30% ¾ ¾ 6 ns SNUM Number of Serial Data 3.0V ¾ ¾ 16 ¾ pcs C S S S S U S S C Y C S L O S O 0 V D D 5 0 % V D D 5 0 % V D D H H I S C K S D A T A 5 0 % O 1 S S U H A 0 ... D 8 S D 9 N U M Serial I/F Timing Chart Data Output Sequence C C D 0 1 2 3 4 5 6 7 8 S H R S H D A D C K O U T C K B L K D O 0 ~ D O 9 B la c k L e v e l C o d e 0 1 2 3 Pixel Data Readout Sequence (1): Start of Conversion Rev. 1.00 13 January 2, 2006 HT82V842A C C D (N -1 ) N S H R S H D A D C K O U T C K B L K D O ~ D O 0 N -8 9 N -7 N -6 N -5 N -4 N -3 N -2 N -1 N B la c k L e v e l C o d e Pixel Data Readout Sequence (2): End of Conversion Clock Timing Variations by Register Setting Clock timing variations when it is inverted by register settings. · No inversion Mode 1 register D6=0, Mode 2 register D2=0; Default C C D S H R S H D A D C K O U T C K D O 0 ~ D O 9 Pulse Control (Default: No Inversion) Rev. 1.00 14 January 2, 2006 HT82V842A · ADCK inversion Mode 1 register D6=1, Mode 2 register D2=0 C C D S H R S H D A D C K O U T C K ~ D O D O 0 9 Pulse Control (ADCK Inversion) · SHR & SHD inversion Mode 1 register D6=0, Mode 2 register D2=1 C C D S H R S H D A D C K O U T C K ~ D O D O 0 9 Pulse Control (SHR & SHD Inversion) · ADCK, SHR & SHD inversion Mode 1 register D6=1, Mode 2 register D2=1 C C D S H R S H D A D C K O U T C K D O 0 ~ D O 9 Pulse Control (ADCK, SHR & SHD Inversion) Rev. 1.00 15 January 2, 2006 HT82V842A Application Circuits 0 .1 m F P o w e r In 3 7 D O 0 D O 1 D O 2 D O 3 D O 4 V S S R E S E T V D D N C V R N V R P 5 3 8 3 9 4 0 4 1 4 2 V D D D O 5 D O 6 3 4 V S S S T B Y 0 .1 m F 6 7 V D D 8 V S S 9 V S S B L K C C D IN A D C L P /C C D C L P 3 6 3 5 P o w e r In 3 4 3 3 0 .1 m F 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 S H D S H R A D C K N C V S S 2 4 2 3 2 2 2 1 2 0 1 9 * 0 .1 m F 1 8 1 7 1 6 0 .1 m F N C N C 1 5 1 4 1 3 0 .1 m F 0* * . 1 m F V D D R E F IN M O N O U T V C O M C C D 0 .1 m F N C O B C A P 0 .1 m F O B P A D IN 1 2 S D A T A S C K C L P C A P 1 1 0 .1 m F C S H T 8 2 V 8 4 2 A V D D 0 .1 m F 1 0 Note: 4 3 4 4 4 5 4 6 O U T C K V D D 0 .1 m F 1 0 m F D O 7 N C 2 0 .1 m F D O 8 D O 9 1 4 7 4 8 P o w e r In P o w e r In ²*² Pin 18 can also connect to ground with a 4.7kW resistor. ²**² The capacitor connects to OBCAP pin maybe need adjust by user¢s applications from 0.1mF~1mF typically. Rev. 1.00 16 January 2, 2006 HT82V842A Package Information 48-pin LQFP (7´7) Outline Dimensions C H D 3 6 G 2 5 I 3 7 2 4 F A B E 4 8 1 3 K a J 1 Symbol A Rev. 1.00 1 2 Dimensions in mm Min. Nom. Max. 8.90 ¾ 9.10 B 6.90 ¾ 7.10 C 8.90 ¾ 9.10 D 6.90 ¾ 7.10 E ¾ 0.50 ¾ F ¾ 0.20 ¾ G 1.35 ¾ 1.45 H ¾ ¾ 1.60 I ¾ 0.10 ¾ J 0.45 ¾ 0.75 K 0.10 ¾ 0.20 a 0° ¾ 7° 17 January 2, 2006 HT82V842A Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor Inc. (Shanghai Sales Office) 7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China 200233 Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor Inc. (Shenzhen Sales Office) 5/F, Unit A, Productivity Building, Cross of Science M 3rd Road and Gaoxin M 2nd Road, Science Park, Nanshan District, Shenzhen, China 518057 Tel: 0755-8616-9908, 8616-9308 Fax: 0755-8616-9533 Holtek Semiconductor Inc. (Beijing Sales Office) Suite 1721, Jinyu Tower, A129 West Xuan Wu Men Street, Xicheng District, Beijing, China 100031 Tel: 010-6641-0030, 6641-7751, 6641-7752 Fax: 010-6641-0125 Holtek Semiconductor Inc. (Chengdu Sales Office) 709, Building 3, Champagne Plaza, No.97 Dongda Street, Chengdu, Sichuan, China 610016 Tel: 028-6653-6590 Fax: 028-6653-6591 Holmate Semiconductor, Inc. (North America Sales Office) 46729 Fremont Blvd., Fremont, CA 94538 Tel: 510-252-9880 Fax: 510-252-9885 http://www.holmate.com Copyright Ó 2006 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.00 18 January 2, 2006