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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉(h脿o)锛� | MAX5515ETC+T |
| 寤犲晢锛� | Maxim Integrated Products |
| 鏂囦欢闋�(y猫)鏁�(sh霉)锛� | 11/23闋�(y猫) |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC DAC 8BIT DUAL VOUT 12TQFN |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 2,500 |
| 瑷�(sh猫)缃檪(sh铆)闁擄細 | 660µs |
| 浣嶆暩(sh霉)锛� | 8 |
| 鏁�(sh霉)鎿�(j霉)鎺ュ彛锛� | MICROWIRE?锛孮SPI?锛屼覆琛�锛孲PI? |
| 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)鐩細 | 2 |
| 闆诲闆绘簮锛� | 鍠浕婧� |
| 宸ヤ綔婧害锛� | -40°C ~ 85°C |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 12-WQFN 瑁搁湶鐒婄洡 |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 12-TQFN-EP锛�4x4锛� |
| 鍖呰锛� | 甯跺嵎 (TR) |
| 杓稿嚭鏁�(sh霉)鐩拰椤炲瀷锛� | 2 闆诲锛屽柈妤碉紱2 闆诲锛岄洐妤� |
| 閲囨ǎ鐜囷紙姣忕锛夛細 | * |
绗�1闋�(y猫)绗�2闋�(y猫)绗�3闋�(y猫)绗�4闋�(y猫)绗�5闋�(y猫)绗�6闋�(y猫)绗�7闋�(y猫)绗�8闋�(y猫)绗�9闋�(y猫)绗�10闋�(y猫)鐣�(d膩ng)鍓嶇11闋�(y猫)绗�12闋�(y猫)绗�13闋�(y猫)绗�14闋�(y猫)绗�15闋�(y猫)绗�16闋�(y猫)绗�17闋�(y猫)绗�18闋�(y猫)绗�19闋�(y猫)绗�20闋�(y猫)绗�21闋�(y猫)绗�22闋�(y猫)绗�23闋�(y猫)
Self-Biased Two-Electrode
Potentiostat Application
See the circuit in Figure 10 for an illustration of how to
use the MAX5515 to bias a two-electrode potentiostat
on the input of an ADC.
Power Supply and
Bypassing Considerations
Bypass the power supply with a 0.1F capacitor to GND.
Minimize lengths to reduce lead inductance. If noise
becomes an issue, use shielding and/or ferrite beads to
increase isolation. For the thin QFN package, connect the
exposed pad to ground.
Layout Considerations
Digital and AC transient signals coupling to GND can
create noise at the output. Use proper grounding tech-
niques, such as a multilayer board with a low-inductance
ground plane. Wire-wrapped boards and sockets are not
recommended. For optimum system performance, use
printed circuit (PC) boards. Good PC board ground lay-
out minimizes crosstalk between DAC outputs, reference
inputs, and digital inputs. Reduce crosstalk by keeping
analog lines away from digital lines.
MAX5512鈥揗AX5515
Dual, Ultra-Low-Power,
8-Bit, Voltage-Output DACs
______________________________________________________________________________________
19
H
L
FB
W
NDAC IS THE NUMERIC VALUE OF THE DAC INPUT CODE.
NPOT IS THE NUMERIC VALUE OF THE POT INPUT CODE.
REFIN
1/2 MAX5514
MAX5401
SOT-POT
100k
DAC
VOUT
5PPM/掳C
RATIOMETRIC
TEMPCO
1.8V 鈮� VDD 鈮� 5.5V
VOUT
VOUT =
VREFIN 脳 NDAC
256
(1 +
255 - NPOT)
255
SCLK
DIN
CS2
CS1
Figure 9. Software-Configurable Output Gain
DAC
BAND
GAP
TO ADC
OUT
REFOUT
REF
1/2 MAX5515
TO ADC
FB
WE
SENSOR
CE
IF
RF
CL
Figure 10. Self-Biased Two-Electrode Potentiostat Application
NDACA IS THE NUMERIC VALUE
OF THE DAC A INPUT CODE.
REFIN
DAC
VOUT1
VOUT1 =
VREFIN 脳 NDACA
256
(1 +
R2 )
R1
NDACB IS THE NUMERIC VALUE
OF THE DAC B INPUT CODE.
VOUT2 =
VREFIN 脳 NDACB
256
VOUTA
1/2 MAX5514
FBA
DAC
VOUT2
VOUTB
FBB
R2
R1
Figure 8. Separate Force-Sense Outputs Create Unity and
Greater-than-Unity DAC Gains Using the Same Reference
鐩搁棞(gu膩n)PDF璩囨枡 |
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鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
|---|---|
| MAX551ACPA | 鍔熻兘鎻忚堪:鏁�(sh霉)妯¤綁(zhu菐n)鎻涘櫒- DAC RoHS:鍚� 鍒堕€犲晢:Texas Instruments 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)閲�:1 DAC 杓稿嚭绔暩(sh霉)閲�:1 杞�(zhu菐n)鎻涢€熺巼:2 MSPs 鍒嗚鲸鐜�:16 bit 鎺ュ彛椤炲瀷:QSPI, SPI, Serial (3-Wire, Microwire) 绌�(w臎n)瀹氭檪(sh铆)闁�:1 us 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:SOIC-14 灏佽:Tube |
| MAX551ACPA+ | 鍔熻兘鎻忚堪:鏁�(sh霉)妯¤綁(zhu菐n)鎻涘櫒- DAC 12-Bit Precision DAC RoHS:鍚� 鍒堕€犲晢:Texas Instruments 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)閲�:1 DAC 杓稿嚭绔暩(sh霉)閲�:1 杞�(zhu菐n)鎻涢€熺巼:2 MSPs 鍒嗚鲸鐜�:16 bit 鎺ュ彛椤炲瀷:QSPI, SPI, Serial (3-Wire, Microwire) 绌�(w臎n)瀹氭檪(sh铆)闁�:1 us 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:SOIC-14 灏佽:Tube |
| MAX551ACUB | 鍔熻兘鎻忚堪:鏁�(sh霉)妯¤綁(zhu菐n)鎻涘櫒- DAC RoHS:鍚� 鍒堕€犲晢:Texas Instruments 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)閲�:1 DAC 杓稿嚭绔暩(sh霉)閲�:1 杞�(zhu菐n)鎻涢€熺巼:2 MSPs 鍒嗚鲸鐜�:16 bit 鎺ュ彛椤炲瀷:QSPI, SPI, Serial (3-Wire, Microwire) 绌�(w臎n)瀹氭檪(sh铆)闁�:1 us 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:SOIC-14 灏佽:Tube |
| MAX551ACUB+ | 鍔熻兘鎻忚堪:鏁�(sh霉)妯¤綁(zhu菐n)鎻涘櫒- DAC 12-Bit Precision DAC RoHS:鍚� 鍒堕€犲晢:Texas Instruments 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)閲�:1 DAC 杓稿嚭绔暩(sh霉)閲�:1 杞�(zhu菐n)鎻涢€熺巼:2 MSPs 鍒嗚鲸鐜�:16 bit 鎺ュ彛椤炲瀷:QSPI, SPI, Serial (3-Wire, Microwire) 绌�(w臎n)瀹氭檪(sh铆)闁�:1 us 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:SOIC-14 灏佽:Tube |
| MAX551ACUB+T | 鍔熻兘鎻忚堪:鏁�(sh霉)妯¤綁(zhu菐n)鎻涘櫒- DAC 12-Bit Precision DAC RoHS:鍚� 鍒堕€犲晢:Texas Instruments 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)閲�:1 DAC 杓稿嚭绔暩(sh霉)閲�:1 杞�(zhu菐n)鎻涢€熺巼:2 MSPs 鍒嗚鲸鐜�:16 bit 鎺ュ彛椤炲瀷:QSPI, SPI, Serial (3-Wire, Microwire) 绌�(w臎n)瀹氭檪(sh铆)闁�:1 us 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:SOIC-14 灏佽:Tube |
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