TelCom Semiconductor Inc TC530CPL, TC530CPJ, TC530COI, TC530CKW Datasheet

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TELCOM SEMICONDUCTOR, INC.

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TC530
TC534

5V PRECISION DATA ACQUISITION SUBSYSTEMS

EV ALUATION

KIT

A VAILABLE

TC530/534-3 11/14/96

FEATURES

■ Precision (up to 17 Bits) A/D Converter

■ 3 Wire Serial Port

■ Flexible: User Can Trade-Off Conversion Speed

Against Resolution

■ Single Supply Operation

■ –5V Output Pin

■ 4 Input, Differential Analog MUX (TC534)

■ Automatic Input Polarity and Overrange Detection

■ Low Operating Current ............................ 5mA Max

■ Wide Analog Input Range ...................... ±4.2V Max

■ Cost Effective

ORDERING INFORMATION

Part No. Package Temp. Range

TC530COI 28-Pin SOIC 0°C to +70°C
TC530CPJ 28-Pin Plastic DIP (300 Mil.) 0°C to +70°C
TC534CKW 44-Pin PQFP 0°C to +70°C
TC534CPL 40-Pin Plastic DIP 0°C to +70°C

TC530EV Evaluation Kit for TC530/534

FUNCTIONAL BLOCK DIAGRAM

GENERAL DESCRIPTION

The TC530/534 are serial analog data acquisition sub­systems ideal for high precision measurements (up to 17 bits
plus sign). The TC530 consists of a dual slope integrating
A/D converter, negative power supply generator and 3 wire
serial interface port. The TC534 is identical to the TC530, but
adds a four channel differential input multiplexer. Key A/D
converter operating parameters (Auto Zero and Integration
time) are programmable, allowing the user to trade-off
conversion time for resolution.

Data conversion is initiated when the RESET input is
brought low. After conversion, data is loaded into the output
shift register and EOC is asserted indicating new data is
available. The converted data (plus Overrange and polarity
bits) is held in the output shift register until read by the
processor, or until the next conversion is completed allowing
the user to access data at any time.

The TC530/534 timebase can be derived from an exter­nal crystal of 2MHz (max), or from an external frequency
source. The TC530/534 requires a single 5V power supply
and features a – 5V, 10mA output which can be used to
supply negative bias to other components in the system.

A0 A1

OSC

IN

EOC
R/W

D

IN

D

OUT

D

CLK

OSC

OUT

OSC

RESET

CAP

+

CAP

–

C

AZ

TC05

TC530
TC534

C

REF

R

INT

C

INT

TC534

(Only)

(TC530 Only)

DC-TO-DC

CONVERTER

State

Machine

Serial Port

Negative
Supply Output

Oscillator

(÷ 4)

Dual Slope A/D Converter

.01µF

0.01µF

Optional
Power-On
Reset Cap

100k

10k

+5V

DIF.

MUX

(TC534

Only)

CH1
CH1

CH2
CH2

CH3
CH3

CH4
CH4

V

IN

VIN

IN
IN

AB

CMPTR

BUF

INT

C

AZ

V

REF

+

V

REF

–

+

C

REF

C

REF

–

ACOM

–

–

–

–

–

+

+

+

+

+

V

DD

V

DD

V

DD

V

DD

V

SS

+

–

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TELCOM SEMICONDUCTOR, INC.

ELECTRICAL CHARACTERISTICS: V

DD

= V

CCD

, CAZ = C

REF

= 0.47µF, unless otherwise specified.

T

A

= +25°C TA = 0°C to +70°C

Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit
Analog

R Resolution Note 1 — — ±17 — — ±17 Bits
ZSE Zero-Scale Error — — 0.5 — 0.005 0.012 % F.S.

with Auto Zero Phase
ENL End Point Linearity Note 1 and 2 — 0.015 0.030 — 0.015 0.045 % F.S.
NL Max Deviation from Best Notes 1 and 2 — 0.008 0.015 — — — % F.S.

Straight Line Fit
ZS

TC

Zero-Scale Temperature — — — — 1 2 µV/°C

Coefficient
SYE Roll-Over Error Note 3 — .012 — — .03 — % F.S.
FS

TC

Full-Scale Temperature Ext. V

REF

— — — — 10 —

ppm/°C

Coefficient TC = 0ppm/°C
I

IN

Input Current V

IN

= 0V — 6 — — — — pA

V

CMR

Common-Mode V

SS

+ 1.5 — VDD – 1.5

VSS + 1.5

—

V

DD

– 1.5

V

Voltage Range
V

INT

Integrator Output Swing VSS + 0.9 — VDD – 0.9

VSS + 0.9

—

V

DD

– 0.9

V

V

IN

Analog Input Signal Range VSS + 1.5 — VDD – 1.5

VSS + 1.5

—

V

DD

– 1.5

V

V

REF

Voltage Reference Range V

SS

+ 1 — VDD – 1 VDD + 1 —

V

DD

– 1 V

t

D

Zero Crossing Comparator — 2.0 — — 3.0 — µsec

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage ........................................................... +6V

Analog Input Voltage (V

+
IN

or V

–
IN

) ....................... VDD to V

SS

Logic Input Voltage .................(VDD + 0.3V) to (GND – 0.3V)

Ambient Operating Temperature Range

Plastic DIP Package .............................................. (C)

0°C to +70°C

SOIC Package (C)..............................0°C to +70°C

PQFP Package (C)..............................0°C to +70°C

Storage Temperature Range.................... – 65°C to +150°C

Lead Temperature (Soldering, 10 sec) ..................... +300°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 in the operational sections of the specifications is not
implied. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

T

A

= +25°C TA = 0°C to +70°C

Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit

V

DD

Analog Power Supply Voltage

4.5 5.0 5.5 4.5 — 5.5 V

V

CCD

Digital Power Supply Voltage

4.5 5.0 5.5 4.5 — 5.5 V

P

D

TC530/534 Total Power VDD = V

CCD

= 5V — — 25 — — — mW

Dissipation

I

S

Supply Current (VS + PIN) — 1.8 2.5 — — 3.0 mA

I

CCD

Supply Current (V

CCD PIN

)f

OSC

= 1MHz — — 1.5 — — 1.7 mA

5V PRECISION DATA ACQUISITION

SUBSYSTEMS

TC530
TC534

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5V PRECISION DATA ACQUISITION
SUBSYSTEMS

TC530
TC534

ELECTRICAL CHARACTERISTICS:
Serial Port Interface: V

CCD

= +5V, unless otherwise specified.

T

A

= +25°C TA = 0°C to +70°C

Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit

V

IH

Input Logic HIGH Level 2.5 — — 2.5 — — V

V

IL

Input Logic LOW Level — — 0.8 — — 0.8 V

I

IN

Input Current (DI, DO, D

CLK

) — — 10 ———µA

VOLLogic LOW Output Voltage I

OUT

= 250µA — 0.2 0.3 — — 0.35 V

(EOC)

ELECTRICAL CHARACTERISTICS:
Serial Port Interface: V

CCD

= +5V, unless otherwise specified.

T

A

= +25°C TA = 0°C to +70°C

Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit

tR, tF Rise and Fall Times CL = 10pF — — 250 — 250 — nsec

(EOC, DI, DO)

F

XTL

Crystal Frequency — — 2.0 — — 2.0 MHz

F

EXT

External Frequency on OSC

IN

— — 4.0 — — 4.0 MHz

t

RS

Read Setup Time 1 — — — 1 — µsec

t

RD

Read Delay Time 250 — — — 250 — nsec

t

DRS

D

CLK

to D

OUT

Delay 450 — — — 450 — nsec

t

PWL

D

CLK

LOW Pulse Width 150 — — — 150 — nsec

t

PWH

D

CLK

HIGH Pulse Width 150 — — — 150 — nsec

t

DR

Data Ready Delay 200 — — — 200 — nsec

ELECTRICAL CHARACTERISTICS:
DC/DC Converter Section: V

DD

= +5V, unless otherwise specified.

T

A

= +25°C TA = 0°C To +70°C

Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit

R

OUT

Output Resistance I

OUT

= 10mA — 65 85 — — 100 Ω

f

CLK

Oscillator Frequency C

OSC

= 0 — 100 — — — — kHz

I

OUT

VSS Output Current — — 10 — — 10 mA

ELECTRICAL CHARACTERISTICS:
Multiplexer: V

DD

= +5V (Note 4)

, unless otherwise specified.

TA = +25°C TA = 0°C to +70°C

Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit

V

INMAX

Maximum Input Voltage – 2.5 — 2.5 –2.5 — 2.5 V

R

DS

ON

Drain/Source ON Resistance — 6 10 — — — kΩ

Notes: 1. Integrate time ≥ 66msec, Auto Zero time ≥ 66msec, V

INT

(pk) = 4V.

2. End point linearity at ±¹⁄₄, ±¹⁄₂, ±³⁄₄ F.S. after full scale adjustment.

3. Roll-over error is related to capacitor used for C

INT

(See "Recommended Suppliers for C

INT

", Table 2).

4. TC534 Only.

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PIN CONFIGURATIONS

1
2
3
4

20
19
18

5
6
7
8

17

23
22
21

9
10
11
12

24

25

26

27

28

TC530CPJ

16
15

13
14

V

V

CCD

D

OUT

D

CLK

C

REF

C

INT

C

AZ

BUF

ACOM

C

REF

REF

V

REF

–

+

–

–

+

CAP
AGND

RESET

–

N/C

EOC

OSC

CAP

+

28

25
24
23
22
21
20
19
18
17

27
26

TC530COI

OSC

OUT

OSC

IN

1
2
3
4
5
6
7
8
9

10
11
12
13
14

1

33
32
31
30
29
28

27
26

25
24
23

2
3
4
5
6

7
8
9

10
11

16
15

V

IN

D

IN

R/W

+

V

IN

DGND

N/C

V

V

SS

V

SS

V

SS

C

REF

C

INT

C

AZ

BUF

ACOM

C

REF
REF

V

REF

–

+

–

–

+

OSC

OUT

V

IN

+

V

IN

DGND

N/C

V

C

REF

C

INT

C

AZ

BUF

ACOM

C

REF
REF

V

REF

–
+
–
+

OSC

OUT

OSC

OUT

DGND

DGND

V

CCD

D

OUT

D

CLK

CAP
AGND

RESET

–

NC

EOC

OSC

CAP

V

CCD

V

CCD

CAP
AGND

AGND

RESET

RESET

OSC

OSC

N/C

N/C
N/C
N/C

N/C

N/C

N/C

N/C

N/C

N/C

+

–

CAP

+

CAP

CAP

–

+

OSC

IN

D

IN

R/W

TC534CPL

1
2
3
4
5
6
7
8

9
10
11

12
13
14
15
16
17
18
19
20

40
39
38
37
36
35
34
33
32
31
30
29

28

27
26
25
24
23
22
21

TC534CKW

A1

A1A0A0

OSC

IN

OSC

IN

D

OUT

D

OUT

D

CLK

D

CLK

EOC

N/C

N/C

N/C

D

IN

D

IN

R/W

R/W

EOC

CH1

+

CH2

+

CH3

+

CH3

+

CH2

+

CH1

+

CH4

+

CH4

–

CH3

–

CH2

–

CH1

–

V

C

REF

ACOM

C

REF

REF

–
+

–

V

REF

+

CH4

+

CH4

–

CH3

–

CH2

–

CH1

–

12 13 14 15

44 43

42

41

39

38

40

N/C

C

INT

37 36 35

34

16

17 18

19 20 21 22

BUF

C

AZ

N/C

N/C

V

DD

V

DD

V

DD

V

SS

V

DD

12 13 14

15

5V PRECISION DATA ACQUISITION

SUBSYSTEMS

TC530
TC534

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PIN DESCRIPTION

Pin No. Pin No. Pin No Pin No.

(TC530 (TC530 (TC534 (TC534

28-Pin 28-Pin 40-Pin 44-Pin

PDIP, 300 Mil.) SOIC) PDIP) PQFP) Symbol Description

11140VSSAnalog Output. Negative power supply converter output

and reservoir capacitor connection. This output can be
used to provide negative bias to other devices in the system.

22241C

INT

Analog Output. Integrator capacitor connection and integrator

output.
33342CAZAnalog Input. Auto Zero capacitor connection.
4 4 4 43 BUF Analog Output. Integrator capacitor connection and voltage

buffer output.
5 5 5 2 ACOM Analog Input. This pin is ground for all of the analog switches

in the A/D converter. It is grounded for most applications.

ACOM and the input common pin (V

–
IN

or Chx–) should be

within the common mode range, CMR.
6663C

–
REF

Analog Input. Reference cap negative connection.
7774C

+
REF

Analog Input. Reference cap positive connection.
8885V

–
REF

Analog Input. External voltage reference negative connection.
9996V

+
REF

Analog Input. External voltage reference positive connection.

Not Used Not Used 10 7 CH4

–

Analog Input. Multiplexer channel 4 negative differential

analog input.

Not Used Not Used 11 8 CH3

–

Analog Input. Multiplexer channel 3 negative differential

analog input.

Not Used Not Used 12 9 CH2

–

Analog Input. Multiplexer channel 2 negative differential

analog input.

Not Used Not Used 13 10 CH1

–

Analog Input. Multiplexer channel 1 negative differential

analog input.

Not Used Not Used 14 11 CH4

+

Analog Input. Multiplexer channel 4 positive differential

analog input.

Not Used Not Used 15 12 CH3

+

Analog Input. Multiplexer channel 3 positive differential

analog input.

Not Used Not Used 16 13 CH2

+

Analog Input. Multiplexer channel 2 positive differential

analog input.

Not Used Not Used 17 14 CH1

+

Analog Input. Multiplexer channel 1 positive differential

analog input.

10 10 Not Used Not Used V

–
IN

Analog Input. Negative differential analog voltage input.

11 11 Not Used Not Used V

+
IN

Analog Input. Positive differential analog voltage input.

12 12 18 15 DGND Analog Input. Ground connection for serial port circuit.
Not Used Not Used 19 16 A1 Logic Level Input. Multiplexer address MSB.
Not Used Not Used 20 17 A0 Logic Level Input. Multiplexer address LSB.

14 14 21 18 OSC

OUT

Analog Input. Timebase for state machine. This pin connects
to one side of an AT-cut crystal having an effective series
resistance of 100Ω (typ) and a parallel capacitance of 20pF
If an external frequency source is used to clock the TC530/534,
this pin must be left floating.

5V PRECISION DATA ACQUISITION
SUBSYSTEMS

TC530
TC534