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Part: TLC876CDBR
Category:
Data Conversion
-> ADC (Analog to Digital Converters)
Description: ti TLC876, 10-Bit, 20 MSPS ADC Single Ch., Powerdown/standby Mode, Low Power
Company: Texas Instruments, Inc.
Datasheet: Download TLC876CDBR datasheet File size : 548 kB
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Datasheet text preview:
TLC876M, TLC876I, TLC876C 10-BIT 20 MSPS PARALLEL OUTPUT CMOS ANALOG-TO-DIGITAL CONVERTERS
SLAS140E JULY 1997 REVISED OCTOBER 2000
features
applications
D D D D D D D D D D D
10-Bit Resolution 20 MSPS Sampling Analog-to-Digital Converter (ADC) Power Dissipation . . . 107 mW Typ 5-V Single Supply Operation Differential Nonlinearity . . . ±0.5 LSB Typ No Missing Codes Power Down (Standby) Mode Three State Outputs Digital I/Os Compatible With 5-V or 3.3-V Logic Adjustable Reference Input Small Outline Package (SOIC), Super Small Outline Package (SSOP), or Thin Small Outline Package (TSOP) Pin Compatible With the Analog Devices AD876
D D D D
Communications Multimedia Digital Video Systems High-Speed DSP Front-End . . . TMS320C6x
DB, DW, OR PW PACKAGE (TOP VIEW)
description
The TLC876 is a CMOS, low-power, 10-bit, 20 13 16 MSPS analog-to-digital converter (ADC). The 14 15 speed, resolution, and single-supply operation are suited for applications in video, multimedia, NC No internal connection imaging, high-speed acquisition, and communications. The low-power and single-supply operation satisfy requirements for high-speed portable applications. The speed and resolution ideally suit charge-coupled device (CCD) input systems such as color scanners, digital copiers, electronic still cameras, and camcorders. A multistage pipelined architecture with output error correction logic provides for no missing codes over the full operating temperature range. Force and sense connections to the reference inputs provide a more accurate internal reference voltage to the reference resistor string. A standby mode of operation reduces the power to typically 15 mW. The digital I/O interfaces to either 5-V or 3.3-V logic and the digital output terminals can be placed in a high-impedance state. The format of the output data is straight binary coding. A pipelined multistaged architecture achieves a high sample rate with low power consumption. The TLC876 distributes the conversion over several smaller ADC sub-blocks, refining the conversion with progressively higher accuracy as the device passes the results from stage to stage. This distributed conversion requires a small fraction of the 1023 comparators used in a traditional flash ADC. A sample-and-hold amplifier (SHA) within each of the stages permits the first stage to operate on a new input sample while the second through the fifth stages operate on the four preceding samples. The TLC876C is characterized for operation from 0°C to 70°C, the TLC876I is characterized for operation from 40°C to 85°C, and the TLC876M is characterized for operation over the full military temperature range of 55°C to 125°C.
AGND DRVDD D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DRGND DGND
1 2 3 4 5 6 7 8 9 10 11 12
28 27 26 25 24 23 22 21 20 19 18 17
AVDD AIN CML REFBS REFBF NC REFTF REFTS DGND AGND DVDD STBY OE CLK
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright © 2000, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
TLC876M, TLC876I, TLC876C 10-BIT 20 MSPS PARALLEL OUTPUT CMOS ANALOG-TO-DIGITAL CONVERTERS
SLAS140E JULY 1997 REVISED OCTOBER 2000
AVAILABLE OPTIONS PACKAGE TA 0°C to 70°C 40°C to 85°C 55°C to 125°C SUPER SMALL OUTLINE (DB) TLC876CDB TLC876IDB -- SMALL OUTLINE (DW) TLC876CDW TLC876IDW TLC876MDW TSSOP (PW) TLC876CPW TLC876IPW --
functional block diagram
SHA 27 SHA GAIN SHA GAIN SHA GAIN SHA GAIN ADC ADC ADC 2 Correction Logic 10 Output Buffers 12 10 Sample and hold amplifier 3 (MSB) D9 (LSB) D0 ADC ADC
AIN
DAC 2
DAC
DAC 2
DAC 2 2
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TLC876M, TLC876I, TLC876C 10-BIT 20 MSPS PARALLEL OUTPUT CMOS ANALOG-TO-DIGITAL CONVERTERS
SLAS140E JULY 1997 REVISED OCTOBER 2000
equivalent input and output circuits
D0D9 OUTPUT CIRCUIT DVDD DVDD DRVDD AIN CLK D0D9 0.3 pF DRGND DRVDD AVDD 30 typ 0.5 pF typ ALL DIGITAL INPUT CIRCUITS AIN INPUT CIRCUIT
DGND DRGND
AGND
DGND REFERENCE INPUT CIRCUIT AVDD 30
REFTF
AVSS AVDD Internal Reference Voltage
REFTS
29
AGND AVDD
REFBS
35
Internal Reference Voltage AVSS
AVDD 34
REFBF
AGND
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
TLC876M, TLC876I, TLC876C 10-BIT 20 MSPS PARALLEL OUTPUT CMOS ANALOG-TO-DIGITAL CONVERTERS
SLAS140E JULY 1997 REVISED OCTOBER 2000
Terminal Functions
TERMINAL NAME AGND AIN AVDD CLK CML DGND DVDD DRVDD DRGND D0 D9 OE REFBF REFBS REFTF REFTS STBY NO. 1, 19 27 28 15 26 14, 20 18 2 13 3 12 16 24 25 22 21 17 O I I I I I I I O I I/O Analog ground Analog input 5-V analog supply Clock input Bypass for an internal bias point. Typically a 0.1 µF capacitor minimum is connected from this terminal to ground. Digital ground 5-V digital supply 3.3-V/5-V digital supply. Supply for digital input and output buffers. 3.3-V/5-V digital ground. Ground for digital input and output buffers. Digital data out. D0:LSB, D9:MSB Output enable. When OE = low or NC, the device is in normal operating mode. When OE = high, D0D9 are high impedance. Reference bottom force Reference bottom sense Reference top force Reference top sense Standby enable. When STBY = low or NC, the device is in normal operating mode. When STBY = high, the device is in standby mode. DESCRIPTION
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, AVDD to AGND, DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6.5 V Reference voltage input range to AGND, VI(REFTF), VI(REFBF), VI(REFBS), VI(REFTS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to AVDD + 0.3 V Analog input voltage range to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to AVDD + 0.3 V Digital input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to DVDD + 0.3 V Digital output voltage range applied from external source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to DVDD Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 150°C Operating free-air temperature range, TA: TLC876C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C TLC876I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 85°C TLC876M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATING TABLE PACKAGE DB DW TA 25°C POWER RATING 1353 mW 1598 mW DERATING FACTOR ABOVE TA = 25°C 10.82 mW/°C 12.78 mW/°C TA = 70°C POWER RATING 866 mW 1023 mW TA = 85°C POWER RATING 703 mW 831 mW TA = 125°C POWER RATING -- 320 mW
PW 1207 mW 9.65 mW/°C 772 mW 627 mW -- This is the inverse of the traditional junction-to-ambient thermal resistance (RJA). Thermal resistance is not production tested, and values given are for informational purposes only.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TLC876M, TLC876I, TLC876C 10-BIT 20 MSPS PARALLEL OUTPUT CMOS ANALOG-TO-DIGITAL CONVERTERS
SLAS140E JULY 1997 REVISED OCTOBER 2000
recommended operating conditions
analog and reference inputs
MIN Reference input voltage (top), VI(REFT) Reference input voltage (bottom), VI(REFB) Analog input voltage, VI(AIN) VI(REFB) + 1 0 1 NOM 3.6 1.6 2 MAX 4.5 VI(REFT) 1 UNIT V V Vpp
power supply
MIN Supply voltage AVDD DVDD 4.5 4.5 NOM MAX 5.25 5.25 5.25 V UNIT
DRVDD 3 The voltage difference between AVDD and DVDD terminals cannot exceed 0.5 V to maintain performance specifications.
digital inputs
MIN DRVDD = 3 V High-level input voltage, VIH DRVDD = 5 V DRVDD = 5.25 V DRVDD = 3 V Low-level input voltage, VIL Clock period, tc (see Figure 1) Pulse duration, clock high, tw(CLKH) Pulse duration, clock low, tw(CLKL) TLC876C Operating free-air temperature, TA TLC876I TLC876M 23 23 0 40 55 DRVDD = 5 V DRVDD = 5.25 V 50 25 25 70 85 125 °C 2.4 4 4.2 0.6 1 1.05 ns ns ns V V NOM MAX UNIT
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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