AN8131FBP PANASONIC
Document overview
- Manufacturer or author: Provided By digicamel.com
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Technical content
A/D and D/A Converters Panasonic CE ee High Speed Low Power Consumption Bi-CMOS 10-Bit A/D Converter Hi Overview Unit: mn The AN8131FBP is a 10-bit A/D converter for image processing which employs the Bi-CMOS process to real- 6 2s ize the low power consumption. A ELL eg a m7 I ws |: * 10-bit resolution | Be ss « Maximum conversion rate : 20MSPS (min.) “ o | ane « Low power consumption : 300mW (typ.) N mc + Operation on single power supply of 5 V 1 2 is |g « SH circuit not required z oust th | [# ¢ Input/Output form : TTL level compatible 3] Ar _| £0. — Application Field al Z « Digital video broadcasting such as D-STB bi * Image equipment such as HDTV + OA equipment such as image scanner + Medical equipment such as ultrasonic diagnosis device 48-pin QFP Package (QFHO48-P-1212A) I Block Diagram E Analog Input INV O vir O mo > Vis O g is HO) i low i Output
AN8131FBP A/D and D/A Converters ANeI strep CC ll Ml Absolute Maximum Rating (Ta=25°C) : Parameter [symbot_[ Rang «dC Supply volage v Analogue input vole v Digital input volage v Digital output curent mA Reference voltage mW Power dissipation [em |r Operating ambient emperatre i Storage temperature t *Ta=70T @@ Recommended Operating Conditions (Ta=25C) Supply volage a Tefecme vas [ve |S ‘| as PV [ve es PV Analogue input voltage [ vw | EERE v Pigial input volage [Dw [Cd | Ps [tn | Vor=aav Si; 0 | — | ma Pigia} output curent [a [vazoav | — | te | = [om Clock input pulse width P= =o | = W@ Electrical Characteristics (Voc=5V, Ta=25T) Parameter [_Symbot_[ Condon [min | yp | max | Unit Supply curent [te | ~~*+| | | wl ma [ter | ve=azsv—S«dt—Ct | 2a] 36 [mn Reference resistive curent [tus | vr=225v—* 6 | =2a | 12 [ma Input bas curent [tw vwsav | | | 50 ; [tw [vez] | ttl ak Crock np cue a Digia} ouput volage [vo [ta=tma | — | — | el Linearity enor [| vw=aver | — | et — | Differential inary enor [B| Vw=2Ver «| — ‘| 0s{ ai | isp Maximum conversion rte [Fe | Wun, «| | — | — | mises uantiation nose [ss Hennes =| ap B Difference gin a % Differencl phase [pp | farcaivite Nock | — | os] 10] © Input band [Bw | Vn=2ve-n 348 | 10| — | — | wie Digital output delay er rut capacitance [cxf vassav |] — |
A/D and D/A Converters AN8131FBP ——— fl Pin Descriptions PinNo| Symbol [Pinname [Standard vavefom| Voltage level_| Description Setting the INV pin to “L” level inverts all the data outputs (DO - D9) but not the 42 Digital output invert pin TTL —_| overflow output. This pin is set to “L” level with no connection and operates a synchronously with clock. It is a power supply pin for digital circuit 24, 30 block. Connect tantalum capacitor of 39,40| DVCC | Digital power supply pin 3v several jz F and ceramic capcacitor of 0.1 43,47 HF as near as possible to this pin between this pin and DGND. 21,23 Connect AGND and DGND with the 31,38 Digital ground ov possible lowest impedance at one point as 41,46 near as possible to the chip. - ‘When overflow occurs, it becomes “H.” " fon fom | | om ‘Tas pin eno afeted by INV pin.
25 Do Digital output (LSB)
26 Di _—_| Digital ourput
Py D2 —_| Digital output 28 D3 —_| Digital output It is an output pin of TTL Level. In order
29 D4 —_| Digital output Refer to the TTL _| to prevent the digital noise to entering the
32 DS —_| Digital output timing chart analogue circuit, suppress the ringing as
33 D6 —_| Digital output far as possible.
34 D7 _| Digital output
35 D8 —_| Digital output
36 D9 _| Digital output (MSB)
3.6 8,10 Connect the AGND and DGND with the 13,15] AGND | Analogue ground ov possible lowest impedance at one point as 18,45 near as the chip. Tt is used to set the reference voltage for comparator. Normally, Ver is given 4.25 V and Van is given 2.25 V. Connect it Ver | Reference voltage high level 425V [tantalum capacitor of several jF and 12 | Vers ceramic capacitor of 0.1 F in parallel 14 Var | Reference voltage mile point level 3.25V | between each pin and analogue ground.
16 Vans Vem is provided for linearity compensa-
17 Van _| Reference voltage low level 2.25V __| tion, which gives middle point potential between Ver and Vas. However, it is normally opened. Vars and Veas are sense pins of Var and Vas respectively. It is a power supply pin for analogue 1,2 circuit block. Connect tantalum capacitor 7,19 | AVcc | Analogue power supply pin $.0V of several F and ceramic capcacitor of 44 0.1 F as near as possible to this pin between this pin and AGND. It is a clock for sampling. For their 2 CLK =| Clock input Refer to the TIL timing, refer to the timing chart. timing chart
AN8131FBP A/D and D/A Converters TY I Timing Chart N+3 N+2 N+i 1 Analogue input __N. ' ' t Clock input N N+1 N+2
1 Output Code
[=H INV=L Step 2.000VFS 1.953mV¥ STEP M L M L OVF9876543210 OVP9876543210 000 4.250000 0 0000000000 O Wit 001 4.248047 0 0000000001 O 1111111110 Sil 3.251953 0 O11 0 1000000000 512 3.250000 0 1000000000 O O11 513 3.248047 0 1000000001 O O111111110 1023 2.251953 O IML 0 0000000000 1024 2.250000 1 Wnt 1 0000000000